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402lounge

Working Security A

com.402lounge/mcpv0.3.0 Domain verified

Receipts, invoices and a payTo register for AI agents that pay with x402 (USDC on Base).

Finance & Payments

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Registry entry

Open in the registry

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-11-04T23:50:15.162147Z",
      "publishedAt": "2026-11-04T23:50:15.162147Z",
      "statusChangedAt": "2026-11-04T23:50:15.162147Z"
    }
  },
  "server": {
    "name": "com.402lounge/mcp",
    "icons": [
      {
        "src": "https://402lounge.com/favicon.svg",
        "sizes": [
          "any"
        ],
        "mimeType": "image/svg+xml"
      }
    ],
    "title": "402lounge",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://mcp.402lounge.com/mcp",
        "type": "streamable-http",
        "headers": [
          {
            "name": "Authorization",
            "isSecret": true,
            "description": "Bearer lg_... session token from lounge.signup. Free tools such as register.lookup work without it."
          }
        ]
      }
    ],
    "version": "0.3.0",
    "websiteUrl": "https://402lounge.com",
    "description": "Receipts, invoices and a payTo register for AI agents that pay with x402 (USDC on Base)."
  }
}

Maintain this server? Claim it

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Call this server's tools from your browser. Nothing to install.

https://mcp.402lounge.com/mcp

Authorization (optional)

Bearer lg_... session token from lounge.signup. Free tools such as register.lookup work without it.

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

billing.checkout

Admin agents, the owner and finance. A checkout link at Polar for Books or Books for teams (plan + period), monthly or yearly (a year costs ten months), or for the archive (archive: month or year, €5 a month or €50 a year), which keeps receipts and documents of a company without a paid plan. Polar is the seller: it charges, handles VAT, issues the invoice and renews until cancelled. The invoices are in Polar's customer portal (billing.portal). Hand the link to a person of your company. It starts once Polar confirms the payment.

planstring

proofobject

An EIP-4361 message you got from a challenge, signed by your wallet

clientstring

Your client name, e.g. "claude-code 2.1"

periodstring

archivestring

The archive instead of a plan, monthly or yearly

session_tokenstring

A lounge session token (lg_...) if you have one

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

I understand, run it anyway

402lounge MCP server | mcptry

402lounge

Working Security A

com.402lounge/mcpv0.3.0 Domain verified

Receipts, invoices and a payTo register for AI agents that pay with x402 (USDC on Base).

Finance & Payments

Watch Watch Website

Registry entry

Open in the registry

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-11-04T23:50:15.162147Z",
      "publishedAt": "2026-11-04T23:50:15.162147Z",
      "statusChangedAt": "2026-11-04T23:50:15.162147Z"
    }
  },
  "server": {
    "name": "com.402lounge/mcp",
    "icons": [
      {
        "src": "https://402lounge.com/favicon.svg",
        "sizes": [
          "any"
        ],
        "mimeType": "image/svg+xml"
      }
    ],
    "title": "402lounge",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://mcp.402lounge.com/mcp",
        "type": "streamable-http",
        "headers": [
          {
            "name": "Authorization",
            "isSecret": true,
            "description": "Bearer lg_... session token from lounge.signup. Free tools such as register.lookup work without it."
          }
        ]
      }
    ],
    "version": "0.3.0",
    "websiteUrl": "https://402lounge.com",
    "description": "Receipts, invoices and a payTo register for AI agents that pay with x402 (USDC on Base)."
  }
}

Maintain this server? Claim it

Try it

Call this server's tools from your browser. Nothing to install.

https://mcp.402lounge.com/mcp

Authorization (optional)

Bearer lg_... session token from lounge.signup. Free tools such as register.lookup work without it.

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

billing.checkout

planstring

proofobject

An EIP-4361 message you got from a challenge, signed by your wallet

clientstring

Your client name, e.g. "claude-code 2.1"

periodstring

archivestring

The archive instead of a plan, monthly or yearly

session_tokenstring

A lounge session token (lg_...) if you have one

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

I understand, run it anyway

Tools (55)

billing.checkout

Argument	Type	Description
plan	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
period	string
archive	string	The archive instead of a plan, monthly or yearly
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "plan": {
      "enum": [
        "books",
        "teams"
      ],
      "type": "string"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "period": {
      "enum": [
        "month",
        "year"
      ],
      "type": "string"
    },
    "archive": {
      "enum": [
        "month",
        "year"
      ],
      "type": "string",
      "description": "The archive instead of a plan, monthly or yearly"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

billing.get

Your company's plan with its period and end, its limits (null means no limit), what it uses this month (transactions, agents, wallets), whether the one-time 20 % over the limit is used, whether the month is locked, the archive (keeps receipts and documents without a paid plan, archive) and what happens to them without either (retention).

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

billing.invoices

The invoices 402lounge issued to your company for payments in USDC, newest first, each with a PDF link (add ?lang=de for German). With id: one invoice with its full content. Plans bought through Polar get their invoice from Polar.

Argument	Type	Description
id	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

billing.portal

Admin agents, the owner and finance. A link to Polar's customer portal: payment method, invoices, change or cancel the plan.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

billing.quote

Admin agents, the owner and finance. An offer to pay in USDC on Base: a plan (plan + period), the archive for a company without a paid plan (archive: month or year) or the seller check for level 2 (seller_check: your listing slug, one year). The price is net in EUR, with VAT for your company and the ECB rate of the day, and the amount in USDC is unique for 30 minutes. Pay it yourself with your x402 client on pay_url, or a person sends exactly amount_usdc to pay_to. 402lounge sends an invoice. Nothing renews by itself. With quote_id only: the status of that offer, with the invoice once paid.

Argument	Type	Description
plan	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
period	string
archive	string	The archive, monthly or yearly
quote_id	string	Read an offer instead of asking for one
seller_check	string	Slug of your listing, for the seller check
session_token	string	A lounge session token (lg_...) if you have one

company.agent.remove

Admins only. Schedules the agent's deletion in 7 days. Its wallets stay with the company, unassigned, and its receipts stay in the books.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
agent_id*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "agent_id"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "agent_id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.agent.update

Admins change any agent, an agent may rename itself. role is admin or agent. The company always keeps an admin or an owner.

Argument	Type	Description
name	string
role	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
agent_id*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "agent_id"
  ],
  "properties": {
    "name": {
      "type": "string",
      "maxLength": 40,
      "minLength": 1
    },
    "role": {
      "enum": [
        "admin",
        "agent"
      ],
      "type": "string"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "agent_id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.agents

Every agent with its role, its wallets and what it paid this month (receipts, USDC, EUR).

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.close

Admin agents and the owner. Closes the company in 30 days: name confirms it with the company name. Until then everything can be read and the export works (GET /v1/company/export), calls that write are refused with company_closing. Then agents, people, sign-ins, sessions and wallets are removed. Receipts and issued documents stay locked until their retention period ends. cancel: true keeps the company. now: true with export_kept: true closes at once and deletes the receipts and documents too, after you downloaded the export. Documents in a seller's name stay with the seller.

Argument	Type	Description
now	boolean	Close at once and delete everything
name	string	The company name, as confirmation
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
cancel	boolean
client	string	Your client name, e.g. "claude-code 2.1"
export_kept	boolean	With now: you downloaded the export and keep the records yourself
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "now": {
      "type": "boolean",
      "description": "Close at once and delete everything"
    },
    "name": {
      "type": "string",
      "maxLength": 160,
      "minLength": 1,
      "description": "The company name, as confirmation"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "cancel": {
      "type": "boolean"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "export_kept": {
      "type": "boolean",
      "description": "With now: you downloaded the export and keep the records yourself"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.email

Where documents and notices go. start sets the address and mails a 6-digit code, confirm checks it, remove clears it (only while the account has no company data). Admins only.

Argument	Type	Description
code	string
email	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action*	string
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "action"
  ],
  "properties": {
    "code": {
      "type": "string",
      "maxLength": 6,
      "minLength": 6
    },
    "email": {
      "type": "string",
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "action": {
      "enum": [
        "start",
        "confirm",
        "remove"
      ],
      "type": "string"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.get

Legal data, VAT status, tier and level, what is missing for the next tier, its agents with this month's spending, its people and your role.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.invite

Admins only. A code valid for seven days. A new agent signs up with lounge.signup {invite_code}, an agent with its own account calls company.join {code} and brings its wallets and receipts.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.join

With an invite code. Works while your own account has no company data, no vouchers and no other agents: your wallets, receipts and reports move into that company and your own account goes away. You join as an agent, and an admin there can make you admin.

Argument	Type	Description
code*	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "maxLength": 12,
      "minLength": 8
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.members

list shows them. invite adds a person by email with a role: owner (everything), finance (documents, VAT check, plan), adviser (reads and exports, changes nothing, for a tax adviser), viewer (reads). They sign in by email link. An address that is in another company already keeps its login and gets this company next to the others. role changes a role, remove takes someone out. Admins and owners only, except list.

Argument	Type	Description
role	string
email	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action	string
client	string	Your client name, e.g. "claude-code 2.1"
member_id	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "role": {
      "enum": [
        "owner",
        "finance",
        "adviser",
        "viewer"
      ],
      "type": "string"
    },
    "email": {
      "type": "string",
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "action": {
      "enum": [
        "list",
        "invite",
        "role",
        "remove"
      ],
      "type": "string",
      "default": "list"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "member_id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.requests

Where the tax adviser or the team ask for things, like a receipt that is missing or a purchase nobody described. list shows open ones (status: done or all for more), show one with its answers (request_id), ask writes one (title, body, optional month like 2026-10 and receipt_id), answer replies (request_id, body) and opens it again, done and reopen change its status, delete takes it back. A new request mails the people who keep the books, an answer everybody in the thread. Whoever reads the receipts may use it.

Argument	Type	Description
body	string
month	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
title	string
action	string
client	string	Your client name, e.g. "claude-code 2.1"
status	string
receipt_id	integer
request_id	string
session_token

company.update

Admins only. Your account starts as a company named after you. Add name, legal_form, address_line1, postal_code, city, country and email to make it a company that gets monthly vouchers, plus a VAT id (checked against VIES at once) for invoice_ready. Any subset works, and the answer lists what is still missing.

Argument	Type	Description
skr	string	Chart of accounts for exports. OWN takes own_accounts
city	string
name	string	Legal name of the company, without the legal form
email	string	Where documents and notices go. A code confirms it
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
vat_id	string	VAT id in the format of its country, like DE123456789 or ATU12345678 (GET /v1/countries). EU numbers are checked against VIES
country	string	ISO 3166 two-letter code, e.g. DE
currency	string	The currency amounts are shown in, next to USDC: EUR (default, the currency of the documents), USD, or any currency with an ECB reference rate

company.vat_check

Asks VIES again and updates the tier. Admins, owners and finance.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.wallet.assign

Admins only. agent_id null leaves the wallet unassigned. Receipts already written keep the agent that paid, new ones get the new agent. Sessions of the previous agent made with that wallet end.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
address*	string
agent_id*	any
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address",
    "agent_id"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$"
    },
    "agent_id": {
      "anyOf": [
        {
          "type": "string",
          "format": "uuid",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
        },
        {
          "type": "null"
        }
      ]
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

company.wallet.label

A name for the company's own lists, e.g. "Research budget". Agents may name their own wallets, admins any. label null clears it.

Argument	Type	Description
label*	any
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
address*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address",
    "label"
  ],
  "properties": {
    "label": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 40
        },
        {
          "type": "null"
        }
      ]
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

directory.claim

Admin agents and owners. A wallet the listing names proves the service is your company's: first call returns a challenge for that wallet, second call with wallet_proof {message, signature} signed by it claims the listing. The wallet moves to level 1 and payments to it name the listing on receipts. A listing your company holds takes more wallets the same way.

Argument	Type	Description
slug*	string	The listing slug, e.g. glassnode
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
address*	string	A payTo wallet of the listing
wallet_proof	object
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "slug",
    "address"
  ],
  "properties": {
    "slug": {
      "type": "string",
      "pattern": "^[a-z0-9][a-z0-9-]{1,59}$",
      "description": "The listing slug, e.g. glassnode"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$",
      "description": "A payTo wallet of the listing"
    },
    "wallet_proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      }
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

directory.get

A listing with its wallets (network and level), what its calls cost, other networks it takes and its links. Company and location show from level 2 on. Free, no account.

Argument	Type	Description
slug*	string	The listing slug, e.g. glassnode

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "slug"
  ],
  "properties": {
    "slug": {
      "type": "string",
      "pattern": "^[a-z0-9][a-z0-9-]{1,59}$",
      "description": "The listing slug, e.g. glassnode"
    }
  }
}

directory.preview

We call one paid URL once without paying, read its 402 answer and show the listing it would make: name, description, price, logo and the wallet you get paid on. Says so when the host or the wallet is listed already, then claim that listing instead.

Argument	Type	Description
url*	string	One https URL that answers 402 Payment Required
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "maxLength": 500,
      "minLength": 8,
      "description": "One https URL that answers 402 Payment Required"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

directory.search

Services that take x402 payments, with their level (0 listed, 1 wallet verified), what they offer (MCP, .well-known/x402, llms.txt) and a link. Search by name, description or host. filter: all, verified or mcp. sort: level, new or name. Free, no account.

Argument	Type	Description
q	string	Words to look for, e.g. "on-chain data"
sort	string
limit	integer
filter	string
offset	integer

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "q": {
      "type": "string",
      "maxLength": 100,
      "description": "Words to look for, e.g. \"on-chain data\""
    },
    "sort": {
      "enum": [
        "level",
        "new",
        "name"
      ],
      "type": "string"
    },
    "limit": {
      "type": "integer",
      "maximum": 100,
      "minimum": 1
    },
    "filter": {
      "enum": [
        "all",
        "verified",
        "mcp"
      ],
      "type": "string"
    },
    "offset": {
      "type": "integer",
      "maximum": 10000,
      "minimum": 0
    }
  }
}

directory.submit

Admin agents and owners. Puts the service behind one paid URL into the directory on level 0, under your company: its payTo wallet on Base, the call and its price from the 402 answer. contact_email is only for us, never shown. Then prove the wallet with directory.claim for level 1.

Argument	Type	Description
url*	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
contact_email*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url",
    "contact_email"
  ],
  "properties": {
    "url": {
      "type": "string",
      "maxLength": 500,
      "minLength": 8
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "contact_email": {
      "type": "string",
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
      "maxLength": 200
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

invoices.cancel

Admins, owners and finance. Issues a cancellation for a document, with your reason. The original keeps its number and turns to cancelled. Its payments are open again, so invoices.issue for that month (or the nightly run for last month) puts them in a new document.

Argument	Type	Description
id*	string	Id or number of the document
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
reason*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id",
    "reason"
  ],
  "properties": {
    "id": {
      "type": "string",
      "maxLength": 64,
      "minLength": 4,
      "description": "Id or number of the document"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "reason": {
      "type": "string",
      "maxLength": 500,
      "minLength": 3
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

invoices.draft

Drafts of the documents the month would get today, one per seller, with lines, totals and the tax case. Nothing is stored and there is no number. Default: the current month (Europe/Berlin). The PDF of a draft is at /v1/invoices/draft/pdf?month=&seller=.

Argument	Type	Description
month	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "month": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}$"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

invoices.get

The full document as JSON, by id or number, with where its archived files lie and their sha256. The PDF is at /v1/invoices/{id}/pdf with your session token.

Argument	Type	Description
id*	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "maxLength": 64,
      "minLength": 4
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

invoices.issue

Admins, owners and finance. Runs by itself every night for last month. Call it for an older finished month or after a cancellation. One document per seller: the monthly overview on Free, the voucher with the tax note on Books. Payments that arrive after a document get a supplement. Pairs with receipts that lack a EUR rate are skipped and listed. Needs the company data and a confirmed email (tier company).

Argument	Type	Description
month	string	Finished month, default: last month
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "month": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}$",
      "description": "Finished month, default: last month"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

invoices.list

Monthly vouchers per seller (and later invoices), newest first. Optional month like 2026-10.

Argument	Type	Description
limit	integer
month	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 200,
      "minimum": 1
    },
    "month": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}$"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.account.delete

Schedules your deletion as an agent in 7 days. cancel: true keeps you. Your wallets and receipts stay with the company. Needs a fresh signature with the delete statement (first call returns the challenge).

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
cancel	boolean
client	string	Your client name, e.g. "claude-code 2.1"
confirm*	boolean
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "confirm"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "cancel": {
      "type": "boolean"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "confirm": {
      "type": "boolean",
      "const": true
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.account.export

Everything 402lounge keeps about you as an agent off chain, as JSON. The company's books come from receipts.list and invoices.list.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.agent.update

Your name inside the company, 1 to 40 characters, unique in the company. Company data lives in company.update.

Argument	Type	Description
name*	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "name"
  ],
  "properties": {
    "name": {
      "type": "string",
      "maxLength": 40,
      "minLength": 1
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.apps

Which clients this agent has used. deactivate ends their sessions, activate turns them back on, disconnect forgets them.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action	string
client	string	Your client name, e.g. "claude-code 2.1"
app_client	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "action": {
      "enum": [
        "list",
        "deactivate",
        "activate",
        "disconnect"
      ],
      "type": "string",
      "default": "list"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "app_client": {
      "type": "string",
      "maxLength": 40
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.dashboard.link

A one-time browser link (10 minutes) into your company's dashboard, signed in as you, for the human behind you.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.me

Who you are (agent and role), your company with its agents, people and level, its wallets, your apps, terms state and pending notices.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.notices

Terms changes, moderation decisions, deletion and security notes, for you and for your company. ack marks one as read.

Argument	Type	Description
id	integer
all	boolean
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action	string
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": -9007199254740991
    },
    "all": {
      "type": "boolean"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "action": {
      "enum": [
        "list",
        "ack"
      ],
      "type": "string",
      "default": "list"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.requirements

Rules, prices, the current terms and the exact sentences you will sign. Free, no account.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

lounge.session

create: a new lg_ token (needs a signature or an existing token). list and revoke manage them.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action*	string
client	string	Your client name, e.g. "claude-code 2.1"
session_id	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "action"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "action": {
      "enum": [
        "create",
        "list",
        "revoke"
      ],
      "type": "string"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.signup

Free. Your account is a company from the first call, named after you until company.update adds the legal data. With invite_code you join an existing company instead. Proves your wallet with a signature: first call returns a challenge, second call with proof {message, signature} creates the account. Wallets that cannot sign pay 0.001 USDC over HTTP instead (pay_instead in the answer), once payments are open.

Argument	Type	Description
name*	string	Your name as an agent, unique inside your company, e.g. "Research"
email	string	Optional: where documents and notices of your new company go. Ignored with invite_code.
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
accept*	object
client	string	Your client name, e.g. "claude-code 2.1"
address	string	Your wallet address, so the challenge comes back as a finished message
provider	string	awal, cdp, viem, other
invite_code	string	From company.invite, to join that company

lounge.terms

Versions, hashes and links of the terms and the privacy notice. With accept: true you confirm a new version: first call returns a challenge, second call with proof {message, signature} records it.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
accept	boolean
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "accept": {
      "type": "boolean"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.wallet.add

The new wallet proves itself: first call returns a challenge for it, second call with wallet_proof {message, signature} adds it. It belongs to your company and you operate it. How many follows the plan: Free 1, Books 5 per agent and 15 in all, Books for teams without limit.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
address*	string
provider	string
wallet_proof	object
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$"
    },
    "provider": {
      "type": "string",
      "maxLength": 40
    },
    "wallet_proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      }
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.wallet.list

All wallets of your company, each with the agent that operates it. mine: true lists only yours.

Argument	Type	Description
mine	boolean
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "mine": {
      "type": "boolean"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.wallet.primary

The wallet you sign in with. It has to be assigned to you.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
address*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

lounge.wallet.remove

Your own wallets (admins: any wallet of the company). Not the one you sign in with, and never your last one. Sessions made with that wallet end. Its receipts stay.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
address*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

receipts.get

A single receipt of your company by id or transaction hash.

Argument	Type	Description
id*	string	Receipt id or 0x transaction hash
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "maxLength": 66,
      "minLength": 1,
      "description": "Receipt id or 0x transaction hash"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

receipts.list

Receipts of your company for one month (default: the current month, Europe/Berlin), newest first, each with the agent that paid. Totals per seller and per agent, and the reports still waiting for the chain. mine: true, agent_id or wallet narrow it.

Argument	Type	Description
mine	boolean	Only the receipts of wallets you operated
limit	integer
month	string	Like 2026-10
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
before	integer	Page: the smallest receipt id of the previous page
client	string	Your client name, e.g. "claude-code 2.1"
status	string	Only receipts with this seller status
wallet	string	Only one paying wallet
agent_id	string	Only one agent of the company
session_token	string	A lounge session token (lg_...) if you have one

receipts.record

Call this after every x402 payment: the transaction hash from the PAYMENT-RESPONSE header plus the URL you paid. 402lounge matches it with the transfer on Base and writes a receipt with the seller from the register, the catalogue description and a provisional EUR value. Free.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
amount	string	What you paid, in USDC, e.g. "0.002"
client	string	Your client name, e.g. "claude-code 2.1"
pay_to	string	The payTo address from the payment requirements
network	string
tx_hash*	string	The settlement transaction, 0x plus 64 hex characters
description	string	What you bought, in your words. The seller's catalogue wins when it knows the URL.
resource_url	string	The URL you paid for (the 402 resource)
session_token	string	A lounge session token (lg_...) if you have one

Wallet in, seller out: the listing that owns a payTo address, its verification level, its paid endpoints and the last health check. Free, no account. Call it before you pay someone new.

Argument	Type	Description
address*	string	A payTo address on Base

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$",
      "description": "A payTo address on Base"
    }
  }
}

seller.check

Level 2 for a listing of your company on level 1: action start {listing} opens the check and returns its steps. The domain of the listing is proved by an email address at it: email {id, email} sends a code there, confirm_email {id, code} confirms it. Without a mailbox, add the DNS TXT record from the check instead (_402lounge.<host>, value 402lounge-verify=<token>). verify {id} runs the steps again (company data with the name of the person who acts for the company, VIES, the domain, EU sanctions list, payment). Once all pass, 402lounge approves it, then the listing is on level 2 for a year. checkout {id} gives the Polar link for 10 € a year, included in Books. get {id}, withdraw {id}.

Argument	Type	Description
id	string
code	string	confirm_email: the six-digit code from the mail
email	string	email: an address at the domain of the listing
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action*	string
client	string	Your client name, e.g. "claude-code 2.1"
listing	string	The listing slug, e.g. glassnode
session_token	string

seller.get

Your company as a seller: every listing with its level (0 listed, 1 wallet verified, 2 company verified, 3 invoicing), the company check and its steps, the seller profile (register entry, representative), the invoicing mandate and self-billing, and what is missing for the next level.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

seller.invoices

Invoices 402lounge issued in your name (L-2610-10427-01), credit notes your buyers issued to you (G-...) and their cancellations, newest first, each with its e-invoice. With id the whole document. PDF and XML: GET /v1/seller/invoices/{id}/pdf and /xml.

Argument	Type	Description
id	string
limit	integer
month	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "id": {
      "type": "string",
      "maxLength": 80
    },
    "limit": {
      "type": "integer",
      "maximum": 200,
      "minimum": 1
    },
    "month": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}$"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

seller.invoices.cancel

Admin agents, the owner and finance. Cancels an invoice in your name or a credit note you received, with a reason: a cancellation in your number range follows, the original stays. The payments are open again and the next monthly run issues them anew.

Argument	Type	Description
id*	string
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
reason*	string
session_token	string	A lounge session token (lg_...) if you have one

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "id",
    "reason"
  ],
  "properties": {
    "id": {
      "type": "string",
      "maxLength": 80
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "reason": {
      "type": "string",
      "maxLength": 500,
      "minLength": 3
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

seller.mandate

Admin agents and owners. get shows the mandate text (link, version, sha256) and whether it is signed. sign: first call returns a challenge, sign it with your wallet and call again with agreement_proof {message, signature}. Then, with a listing on level 2 and Books, buyers on level 3 get monthly invoices in your name (§ 14 (2) UStG), issued by 402lounge. revoke ends it at the end of the month.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action*	string
client	string	Your client name, e.g. "claude-code 2.1"
confirm	boolean
session_token	string	A lounge session token (lg_...) if you have one
agreement_proof	object

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "action"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "action": {
      "enum": [
        "get",
        "sign",
        "revoke"
      ],
      "type": "string"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "confirm": {
      "type": "boolean"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    },
    "agreement_proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      }
    }
  }
}

seller.profile

Admin agents and owners. What level 2 needs on top of the company data: the name of the person who acts for the company (representative_name, the role is optional). The commercial register court and number help the check but are optional, no_register: true where there is none. sole_proprietor: true when the company is one person, then show_name says whether the register may show the name.

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
client	string	Your client name, e.g. "claude-code 2.1"
show_name	boolean
no_register	boolean
session_token	string	A lounge session token (lg_...) if you have one
register_court	any	e.g. Amtsgericht Charlottenburg
register_number	any	e.g. HRB 123456
sole_proprietor	boolean
representative_name	any

seller.self_billing

Admin agents and owners. Without a mandate, a company on level 2 can agree that its buyers on level 3 issue credit notes (Gutschriften) for what they paid, on any plan. get, sign (challenge, then agreement_proof), revoke (at the end of the month).

Argument	Type	Description
proof	object	An EIP-4361 message you got from a challenge, signed by your wallet
action*	string
client	string	Your client name, e.g. "claude-code 2.1"
confirm	boolean
session_token	string	A lounge session token (lg_...) if you have one
agreement_proof	object

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "action"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "action": {
      "enum": [
        "get",
        "sign",
        "revoke"
      ],
      "type": "string"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "confirm": {
      "type": "boolean"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    },
    "agreement_proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      }
    }
  }
}

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "plan": {
      "enum": [
        "books",
        "teams"
      ],
      "type": "string"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "period": {
      "enum": [
        "month",
        "year"
      ],
      "type": "string"
    },
    "archive": {
      "enum": [
        "month",
        "year"
      ],
      "type": "string",
      "description": "The archive, monthly or yearly"
    },
    "quote_id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
      "description": "Read an offer instead of asking for one"
    },
    "seller_check": {
      "type": "string",
      "pattern": "^[a-z0-9][a-z0-9-]{1,59}$",
      "description": "Slug of your listing, for the seller check"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "skr": {
      "enum": [
        "SKR03",
        "SKR04",
        "OWN"
      ],
      "type": "string",
      "description": "Chart of accounts for exports. OWN takes own_accounts"
    },
    "city": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    },
    "name": {
      "type": "string",
      "maxLength": 120,
      "minLength": 1,
      "description": "Legal name of the company, without the legal form"
    },
    "email": {
      "type": "string",
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
      "description": "Where documents and notices go. A code confirms it"
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "vat_id": {
      "type": "string",
      "maxLength": 30,
      "description": "VAT id in the format of its country, like DE123456789 or ATU12345678 (GET /v1/countries). EU numbers are checked against VIES"
    },
    "country": {
      "type": "string",
      "description": "ISO 3166 two-letter code, e.g. DE"
    },
    "currency": {
      "type": "string",
      "pattern": "^[A-Za-z]{3}$",
      "description": "The currency amounts are shown in, next to USDC: EUR (default, the currency of the documents), USD, or any currency with an ECB reference rate"
    },
    "language": {
      "type": [
        "string",
        "null"
      ],
      "description": "Language of documents and mails: en, de, fr, it, es, nl, pt, sv, da, fi or nb. Null takes the language of the country"
    },
    "fx_method": {
      "enum": [
        "ecb_daily"
      ],
      "type": "string",
      "description": "How USDC becomes EUR on documents. Today only ecb_daily (ECB reference rate of the payment day)"
    },
    "legal_form": {
      "type": "string",
      "maxLength": 40,
      "description": "GmbH, UG, AG, e.K., Inc., ..."
    },
    "tax_number": {
      "type": "string",
      "maxLength": 30
    },
    "vat_status": {
      "anyOf": [
        {
          "enum": [
            "vat_id",
            "tax_number",
            "small_business",
            "exempt",
            "not_registered"
          ],
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "description": "How the company stands with VAT: vat_id, tax_number (registered, VAT id still to come), small_business (§ 19 UStG) exempt (only VAT-exempt sales) or not_registered (no VAT registration, the USA or another country without VAT). Decides the tax note on its documents"
    },
    "postal_code": {
      "type": "string",
      "maxLength": 12,
      "minLength": 3
    },
    "own_accounts": {
      "anyOf": [
        {
          "type": "object",
          "required": [
            "expense",
            "clearing",
            "usdc"
          ],
          "properties": {
            "usdc": {
              "type": "string",
              "pattern": "^\\d{4,8}$"
            },
            "expense": {
              "type": "string",
              "pattern": "^\\d{4,8}$"
            },
            "clearing": {
              "type": "string",
              "pattern": "^\\d{4,8}$"
            }
          }
        },
        {
          "type": "null"
        }
      ],
      "description": "With skr OWN: the expense, clearing and USDC holding accounts of your chart, 4 to 8 digits"
    },
    "address_line1": {
      "type": "string",
      "maxLength": 120,
      "minLength": 2
    },
    "address_line2": {
      "type": "string",
      "maxLength": 120
    },
    "address_state": {
      "type": "string",
      "maxLength": 40,
      "description": "State or province, written after the city in the USA, Canada and Australia (TX, ON, NSW)"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "name",
    "accept"
  ],
  "properties": {
    "name": {
      "type": "string",
      "maxLength": 40,
      "minLength": 1,
      "description": "Your name as an agent, unique inside your company, e.g. \"Research\""
    },
    "email": {
      "type": "string",
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
      "description": "Optional: where documents and notices of your new company go. Ignored with invite_code."
    },
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "accept": {
      "type": "object",
      "required": [
        "terms",
        "privacy",
        "business"
      ],
      "properties": {
        "terms": {
          "type": "string"
        },
        "privacy": {
          "type": "string"
        },
        "business": {
          "type": "boolean",
          "const": true
        }
      }
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$",
      "description": "Your wallet address, so the challenge comes back as a finished message"
    },
    "provider": {
      "type": "string",
      "maxLength": 40,
      "description": "awal, cdp, viem, other"
    },
    "invite_code": {
      "type": "string",
      "maxLength": 12,
      "minLength": 8,
      "description": "From company.invite, to join that company"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    }
  }
}

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "tx_hash"
  ],
  "properties": {
    "proof": {
      "type": "object",
      "required": [
        "message",
        "signature"
      ],
      "properties": {
        "message": {
          "type": "string"
        },
        "signature": {
          "type": "string"
        }
      },
      "description": "An EIP-4361 message you got from a challenge, signed by your wallet"
    },
    "amount": {
      "type": "string",
      "maxLength": 24,
      "description": "What you paid, in USDC, e.g. \"0.002\""
    },
    "client": {
      "type": "string",
      "maxLength": 40,
      "description": "Your client name, e.g. \"claude-code 2.1\""
    },
    "pay_to": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$",
      "description": "The payTo address from the payment requirements"
    },
    "network": {
      "enum": [
        "base",
        "base-sepolia"
      ],
      "type": "string"
    },
    "tx_hash": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{64}$",
      "description": "The settlement transaction, 0x plus 64 hex characters"
    },
    "description": {
      "type": "string",
      "maxLength": 280,
      "description": "What you bought, in your words. The seller's catalogue wins when it knows the URL."
    },
    "resource_url": {
      "type": "string",
      "format": "uri",
      "maxLength": 500,
      "description": "The URL you paid for (the 402 resource)"
    },
    "session_token": {
      "type": "string",
      "description": "A lounge session token (lg_...) if you have one"
    },
    "payment_response": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 4000
        },
        {
          "type": "object",
          "propertyNames": {
            "type": "string"
          },
          "additionalProperties": {}
        }
      ],
      "description": "The raw PAYMENT-RESPONSE header, if you still have it"
    }
  }
}

402lounge

Registry entry

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billing.checkout

402lounge

Registry entry

Try it

billing.checkout

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