Servers Playground How we check Add a server Log in

Agent Embassy

Working · 3.0 s

pro.aemb/agent-embassyv1.0.3 Domain verified

Agents pay for work and prove what happened.

AI & Agents

Website Registry entry

Maintain this server? Claim it

Try it

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

https://aemb.pro/mcp

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.

agentid_issue

Issue an Agent ID: attestation binding a pubkey to a verified principal — unverifiable are refused. validity_days defaults to standard. Verify: agentid_verify. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/agent-id/issue.

agent_pubkeystring, required

The agent's public key (hex), the root of the Agent ID

principal_idstring, required

ID of the accountable principal on file with the Embassy

operator_namestring, required

Public name of the operator running the agent (max 200 chars)

principal_kindstring, required

Kind of principal: human or legal_entity

idempotency_keystring, required

Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

principal_labelstring, required

Public label for the principal

operator_contactstring, required

Public contact for the operator (max 320 chars)

principal_attestation_methodstring, required

How the Embassy verified the principal

validity_daysnumber

Days until the Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted

agent_key_schemestring

Key scheme for agent_pubkey: eip191 or ed25519 (default eip191)

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

Agent Embassy MCP server | mcptry

Agent Embassy

Working · 3.0 s

pro.aemb/agent-embassyv1.0.3 Domain verified

Agents pay for work and prove what happened.

AI & Agents

Website Registry entry

Maintain this server? Claim it

Try it

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

https://aemb.pro/mcp

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.

agentid_issue

agent_pubkeystring, required

The agent's public key (hex), the root of the Agent ID

principal_idstring, required

ID of the accountable principal on file with the Embassy

operator_namestring, required

Public name of the operator running the agent (max 200 chars)

principal_kindstring, required

Kind of principal: human or legal_entity

idempotency_keystring, required

principal_labelstring, required

Public label for the principal

operator_contactstring, required

Public contact for the operator (max 320 chars)

principal_attestation_methodstring, required

How the Embassy verified the principal

validity_daysnumber

Days until the Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted

agent_key_schemestring

Key scheme for agent_pubkey: eip191 or ed25519 (default eip191)

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 (25)

agentid_issue

Argument	Type	Description
agent_pubkey*	string	The agent's public key (hex), the root of the Agent ID
principal_id*	string	ID of the accountable principal on file with the Embassy
operator_name*	string	Public name of the operator running the agent (max 200 chars)
validity_days	number	Days until the Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted
principal_kind*	string	Kind of principal: human or legal_entity
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
principal_label*	string	Public label for the principal
agent_key_scheme	string	Key scheme for agent_pubkey: eip191 or ed25519 (default eip191)
operator_contact*	string	Public contact for the operator (max 320 chars)
principal_attestation_method*	string	How the Embassy verified the principal

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "agent_pubkey",
    "operator_name",
    "operator_contact",
    "principal_id",
    "principal_kind",
    "principal_label",
    "principal_attestation_method",
    "idempotency_key"
  ],
  "properties": {
    "agent_pubkey": {
      "type": "string",
      "description": "The agent's public key (hex), the root of the Agent ID"
    },
    "principal_id": {
      "type": "string",
      "description": "ID of the accountable principal on file with the Embassy"
    },
    "operator_name": {
      "type": "string",
      "description": "Public name of the operator running the agent (max 200 chars)"
    },
    "validity_days": {
      "type": "number",
      "description": "Days until the Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted"
    },
    "principal_kind": {
      "type": "string",
      "description": "Kind of principal: human or legal_entity"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    },
    "principal_label": {
      "type": "string",
      "description": "Public label for the principal"
    },
    "agent_key_scheme": {
      "type": "string",
      "description": "Key scheme for agent_pubkey: eip191 or ed25519 (default eip191)"
    },
    "operator_contact": {
      "type": "string",
      "description": "Public contact for the operator (max 320 chars)"
    },
    "principal_attestation_method": {
      "type": "string",
      "description": "How the Embassy verified the principal"
    }
  },
  "additionalProperties": false
}

agentid_renew

Renew an Agent ID: fresh ID, same chain; the old retires. Sign like a revocation. validity_days defaults to standard. Retire outright: agentid_revoke. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/agent-id/renew.

destructive

Argument	Type	Description
agent_id*	string	The Agent ID string returned at issuance (64 hex characters; case-insensitive). Unknown IDs are rejected
validity_days	number	Days until the renewed Agent ID expires; integer 1-730. Defaults to the Embassy standard when omitted
idempotency_key	string	Optional idempotency key: UUID v4 (client-generated; published example keys are rejected). When provided, replaying the same key returns the original receipt instead of re-running the action; when omitted, no dedupe occurs. Keys are scoped per tool and per payer account: the same key on another tool — or from another wallet — is unrelated.
revocation_signature*	string	Hex signature over the exact UTF-8 message agent-id-revoke:<OLD_agent_id> (64-char lowercase ID, no trailing newline) — the signature covers the OLD Agent ID being retired. EIP-191: personal_sign the message STRING (personal_sign envelope REQUIRED — raw ECDSA will not verify), 0x 65-byte hex r\|\|s\|\|v (v=27/28). ed25519: nacl.sign.detached over the message bytes, 64-byte hex. Signer: the principal's on-file revocation key, or the Embassy signer for cause

agentid_revoke

Retire an Agent ID instantly, with no successor: sign as the revocation_signature field specifies — who signs, and how. Fresh ID, same chain: agentid_renew. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/agent-id/revoke.

destructive

Argument	Type	Description
reason*	string	Why the Agent ID is being retired (required, max 500 characters)
agent_id*	string	The Agent ID string returned at issuance (64 hex characters; case-insensitive). Unknown IDs are rejected
idempotency_key	string	Optional idempotency key: UUID v4 (client-generated; published example keys are rejected). When provided, replaying the same key returns the original receipt instead of re-running the action; when omitted, no dedupe occurs. Keys are scoped per tool and per payer account: the same key on another tool — or from another wallet — is unrelated.
revocation_signature*	string	Hex signature over the exact UTF-8 message agent-id-revoke:<agent_id> (64-char lowercase ID, no trailing newline). EIP-191: personal_sign the message STRING (personal_sign envelope REQUIRED — raw ECDSA will not verify), 0x 65-byte hex r\|\|s\|\|v (v=27/28). ed25519: nacl.sign.detached over the message bytes, 64-byte hex. Signer: the principal's on-file revocation key, or the Embassy signer for cause

Input schema (JSON)

agentid_verify

Agent ID state — valid, revoked, expired, or unknown — chain + envelope included. Unknown IDs: unknown, never error. Issue: agentid_issue; extend: agentid_renew. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/agent-id/verify.

Argument	Type	Description
agent_id*	string	The Agent ID string returned at issuance (64 hex characters; case-insensitive). Rate-limited: 30 checks/min per client IP, 429 on exhaustion
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "agent_id",
    "idempotency_key"
  ],
  "properties": {
    "agent_id": {
      "type": "string",
      "description": "The Agent ID string returned at issuance (64 hex characters; case-insensitive). Rate-limited: 30 checks/min per client IP, 429 on exhaustion"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

attest_document

Prove a document existed: send its SHA256 hash — we never see it — for a signed, hash-chained attestation. document_name is an optional label. Live URLs: check_url_custom. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/cert.

Argument	Type	Description
document_hash*	string	SHA256 hash of your document as 64 lowercase hex characters
document_name	string	Optional label for your document (max 200 chars)
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "document_hash",
    "idempotency_key"
  ],
  "properties": {
    "document_hash": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$",
      "description": "SHA256 hash of your document as 64 lowercase hex characters"
    },
    "document_name": {
      "type": "string",
      "maxLength": 200,
      "description": "Optional label for your document (max 200 chars)"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

attest_work

Notarize work done anywhere: submit evidence; we verify it and mint a signed receipt. evidence_urls + evidence_hash optional. Document's existence: attest_document. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $1.00, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/attest.

Argument	Type	Description
evidence_hash	string	SHA256 of work artifact
evidence_urls	array	URLs proving the work
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
work_description*	string	What was done

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "work_description",
    "idempotency_key"
  ],
  "properties": {
    "evidence_hash": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$",
      "description": "SHA256 of work artifact"
    },
    "evidence_urls": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 10,
      "description": "URLs proving the work"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    },
    "work_description": {
      "type": "string",
      "maxLength": 5000,
      "minLength": 1,
      "description": "What was done"
    }
  },
  "additionalProperties": false
}

check_url_changes

'Tell me when it changes': a standing URL check — receipt and charge only on change. check_interval_hours defaults to 24. One-time check: check_url_custom. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $1.00, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/watch.

Argument	Type	Description
url*	string	HTTPS URL to watch
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
check_interval_hours	number	Hours between checks

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url",
    "idempotency_key"
  ],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2000,
      "description": "HTTPS URL to watch"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    },
    "check_interval_hours": {
      "type": "number",
      "default": 24,
      "maximum": 168,
      "minimum": 1,
      "description": "Hours between checks"
    }
  },
  "additionalProperties": false
}

check_url_custom

Your conditions, one fetch: status, substring, JSON value — signed pass/fail receipt. Default status 200. Public proof: check_url_sealed. Watch: check_url_changes. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.001, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/check/ping.

Argument	Type	Description
url*	string	HTTPS URL to check (max 2000 chars; no credentials in URL). Fetched once; up to 3 redirects followed, 10s timeout, 1MB body cap
expect_status	number	Expected HTTP status code; truncated to an integer. Defaults to 200 when omitted
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
expect_json_path	string	Dot-separated path into the JSON body, e.g. 'data.price' (max 500 chars). Only evaluated when set
expect_json_equals	any	Expected value at expect_json_path; compared by canonical JSON equality. Defaults to null when omitted
expect_body_contains	string

check_url_sealed

Proof anyone can verify: one fetch, transcript sealed in a signed receipt — HTTP 200 at that moment, fixed at 200. Your own conditions instead: check_url_custom. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/check/prove.

Argument	Type	Description
url*	string	HTTPS URL to prove live (max 2000 chars; no credentials in URL). Fetched once; up to 3 redirects followed, 10s timeout, 1MB body cap. Default expectation: HTTP 200
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url",
    "idempotency_key"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "HTTPS URL to prove live (max 2000 chars; no credentials in URL). Fetched once; up to 3 redirects followed, 10s timeout, 1MB body cap. Default expectation: HTTP 200"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

compute_alerts

GPU price moves that matter: significant spot moves, in a signed receipt. limit defaults to 25. Live snapshot: compute_spot_prices. Past: compute_history. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/markets/compute/alerts.

Argument	Type	Description
gpu	string	Optional GPU filter, e.g. 'H100 SXM' (max 64 chars). Omit for all GPUs
limit	number	Max alerts to return; integer 1-50. Defaults to 25
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "idempotency_key"
  ],
  "properties": {
    "gpu": {
      "type": "string",
      "description": "Optional GPU filter, e.g. 'H100 SXM' (max 64 chars). Omit for all GPUs"
    },
    "limit": {
      "type": "number",
      "description": "Max alerts to return; integer 1-50. Defaults to 25"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

compute_history

GPU market memory: cheapest and median asks per class, in a signed receipt. limit defaults to 50. Live: compute_spot_prices. Moves: compute_alerts. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/markets/compute/history.

Argument	Type	Description
gpu	string	Optional GPU filter, e.g. 'H100 SXM' (max 64 chars). Omit for whole-market history
limit	number	Max history points to return; integer 1-200. Defaults to 50
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "idempotency_key"
  ],
  "properties": {
    "gpu": {
      "type": "string",
      "description": "Optional GPU filter, e.g. 'H100 SXM' (max 64 chars). Omit for whole-market history"
    },
    "limit": {
      "type": "number",
      "description": "Max history points to return; integer 1-200. Defaults to 50"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

compute_spot_prices

GPU asks, not quotes: one timestamped snapshot; asks may vanish. Observes only. Omit gpu = full snapshot; type defaults ondemand. Sealed: compute_spot_sealed. GET the paid_url with an x402 v2 PAYMENT-SIGNATURE header carrying the USDC authorization. Paid tool — $0.25 per snapshot, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/markets/compute/spot.

Argument	Type	Description
gpu	string	Optional GPU model filter, e.g. 'H100 SXM'
type	string	Offer type: ondemand (fixed price), bid (interruptible auction — shown price is the bid floor), or reserved (longer commitment)
max_gpus	integer	Maximum GPU count per offer; integer 1..64
min_gpus	integer	Minimum GPU count per offer; integer >= 1
verified	boolean	When true, only verified hosts; when false, only unverified hosts
max_results	integer	Max offers to return; integer 1-25
min_reliability	number	Minimum host reliability 0..1 (inclusive); hosts below it are excluded

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "gpu": {
      "type": "string",
      "description": "Optional GPU model filter, e.g. 'H100 SXM'"
    },
    "type": {
      "enum": [
        "ondemand",
        "bid",
        "reserved"
      ],
      "type": "string",
      "description": "Offer type: ondemand (fixed price), bid (interruptible auction — shown price is the bid floor), or reserved (longer commitment)"
    },
    "max_gpus": {
      "type": "integer",
      "maximum": 64,
      "minimum": 1,
      "description": "Maximum GPU count per offer; integer 1..64"
    },
    "min_gpus": {
      "type": "integer",
      "minimum": 1,
      "description": "Minimum GPU count per offer; integer >= 1"
    },
    "verified": {
      "type": "boolean",
      "description": "When true, only verified hosts; when false, only unverified hosts"
    },
    "max_results": {
      "type": "integer",
      "maximum": 25,
      "minimum": 1,
      "description": "Max offers to return; integer 1-25"
    },
    "min_reliability": {
      "type": "number",
      "maximum": 1,
      "minimum": 0,
      "description": "Minimum host reliability 0..1 (inclusive); hosts below it are excluded"
    }
  },
  "additionalProperties": false
}

compute_spot_sealed

GPU price, sealed proof: snapshot, cheapest ask/class, signed receipt. type defaults ondemand; omit gpu = all classes. Raw: compute_spot_prices. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/check/proveit-verified.

Argument	Type	Description
gpu	string	Optional GPU class, e.g. 'H100 SXM' (max 64 chars). Omit for the per-class snapshot
type	string	Offer type: ondemand, bid, or reserved. Defaults to ondemand
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "idempotency_key"
  ],
  "properties": {
    "gpu": {
      "type": "string",
      "description": "Optional GPU class, e.g. 'H100 SXM' (max 64 chars). Omit for the per-class snapshot"
    },
    "type": {
      "type": "string",
      "description": "Offer type: ondemand, bid, or reserved. Defaults to ondemand"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

correct_copy

$1.00 correction pass on your draft: formatting, links verified live, terms confirmed, leaks scanned — corrected copy + signed report. register sets the voice. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $1.00, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/copy/correct.

Argument	Type	Description
draft*	string	The raw draft copy to correct (1-20000 chars)
links	array	HTTPS URLs the copy references; each is verified alive via HEAD (fallback GET), 8s timeout, redirects never followed (max 20)
register*	string	Voice register: founder-notes, elite, force, or bright-soft-junior
required_terms	array	Terms that must appear in the final copy (max 20; each term max 100 chars; counted case-insensitively)
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "draft",
    "register",
    "idempotency_key"
  ],
  "properties": {
    "draft": {
      "type": "string",
      "maxLength": 20000,
      "minLength": 1,
      "description": "The raw draft copy to correct (1-20000 chars)"
    },
    "links": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 20,
      "description": "HTTPS URLs the copy references; each is verified alive via HEAD (fallback GET), 8s timeout, redirects never followed (max 20)"
    },
    "register": {
      "enum": [
        "founder-notes",
        "elite",
        "force",
        "bright-soft-junior"
      ],
      "type": "string",
      "description": "Voice register: founder-notes, elite, force, or bright-soft-junior"
    },
    "required_terms": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 100,
        "minLength": 1
      },
      "maxItems": 20,
      "description": "Terms that must appear in the final copy (max 20; each term max 100 chars; counted case-insensitively)"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

diligence_pack

All checks, one call: liveness, content, TLS fingerprint, trust verdict, doc timestamp — one signed receipt. document_hash optional. One check: the tool alone. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $1.00, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/diligence/pack.

Argument	Type	Description
url*	string	HTTPS URL to run the full suite against
document_hash	string	SHA256 of document to timestamp
document_name	string	Label for the document
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url",
    "idempotency_key"
  ],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2000,
      "description": "HTTPS URL to run the full suite against"
    },
    "document_hash": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$",
      "description": "SHA256 of document to timestamp"
    },
    "document_name": {
      "type": "string",
      "maxLength": 200,
      "description": "Label for the document"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

farcaster_kit

Farcaster from zero: first casts, frame spec, launch checklist in one fill-in template with a signed receipt. On Nostr instead: nostr_kit. agent_wallet optional, on the receipt. POST to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/kits/farcaster.

Argument	Type	Description
idempotency_key*	string	Client-generated UUID v4, one per logical request. Replaying the same key on the same tool returns the original receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "idempotency_key"
  ],
  "properties": {
    "idempotency_key": {
      "type": "string",
      "description": "Client-generated UUID v4, one per logical request. Replaying the same key on the same tool returns the original receipt."
    }
  },
  "additionalProperties": false
}

give

Support the Embassy. Open-amount USDC gift, $0.01–$222. The signed quote binds your exact amount; receipt: patronage, never for work. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — open amount, buyer chooses $0.01–$222.00, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/give.

Argument	Type	Description
amount_usd*	string \| number	Exact gift amount in USD, caller-supplied: a plain decimal string like "5.00" ("$5.00" also accepted) or a number with at most 2 decimals. Canonical integer-cent parse: exponent, locale/grouping, sub-cent precision, negative, zero, below-$0.01 and above-$222.00 forms are rejected. The signed 402 quote binds this exact amount; you authorize exactly what you quoted.
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "amount_usd",
    "idempotency_key"
  ],
  "properties": {
    "amount_usd": {
      "type": [
        "string",
        "number"
      ],
      "description": "Exact gift amount in USD, caller-supplied: a plain decimal string like \"5.00\" (\"$5.00\" also accepted) or a number with at most 2 decimals. Canonical integer-cent parse: exponent, locale/grouping, sub-cent precision, negative, zero, below-$0.01 and above-$222.00 forms are rejected. The signed 402 quote binds this exact amount; you authorize exactly what you quoted."
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

nostr_kit

Nostr from zero: first notes, profile, relays, launch checklist in one fill-in template with a signed receipt. On Farcaster instead: farcaster_kit. agent_wallet optional, on the receipt. POST to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/kits/nostr.

Argument	Type	Description
idempotency_key*	string	Client-generated UUID v4, one per logical request. Replaying the same key on the same tool returns the original receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "idempotency_key"
  ],
  "properties": {
    "idempotency_key": {
      "type": "string",
      "description": "Client-generated UUID v4, one per logical request. Replaying the same key on the same tool returns the original receipt."
    }
  },
  "additionalProperties": false
}

rank_the_rankers

Skip the sweep: the ranked directory of ranking surfaces — methods, integrity, freshness, our standing — in a signed receipt. Omit surface = full directory. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/directory/rankers.

Argument	Type	Description
surface	string	Optional surface slug (e.g. 'x402-list', '8004scan', 'glama') to return only that entry. Omit for the full directory
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
include_unverified	boolean	Include surfaces not yet verified by a live read (listed as unverified, never ranked). Defaults to true

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "idempotency_key"
  ],
  "properties": {
    "surface": {
      "type": "string",
      "description": "Optional surface slug (e.g. 'x402-list', '8004scan', 'glama') to return only that entry. Omit for the full directory"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    },
    "include_unverified": {
      "type": "boolean",
      "description": "Include surfaces not yet verified by a live read (listed as unverified, never ranked). Defaults to true"
    }
  },
  "additionalProperties": false
}

register_recovery

Escrow an encrypted recovery blob: stored opaquely — we cannot decrypt it — for operator review, signed receipt proving its hash; quorum_rules govern release. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $1.00, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/recovery/register.

Argument	Type	Description
contact_name*	string	Your name or operator handle, recorded with the escrow
quorum_rules*	string	The release rules for this blob, e.g. '2-of-3 named trustees must approve release'
recovery_blob*	string	Client-encrypted blob (ENC:v1:base64...). Stored opaquely; only its SHA-256 and byte count enter the signed receipt
contact_handle	string	Optional contact (email or handle) for the operator review
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "contact_name",
    "quorum_rules",
    "recovery_blob",
    "idempotency_key"
  ],
  "properties": {
    "contact_name": {
      "type": "string",
      "description": "Your name or operator handle, recorded with the escrow"
    },
    "quorum_rules": {
      "type": "string",
      "description": "The release rules for this blob, e.g. '2-of-3 named trustees must approve release'"
    },
    "recovery_blob": {
      "type": "string",
      "description": "Client-encrypted blob (ENC:v1:base64...). Stored opaquely; only its SHA-256 and byte count enter the signed receipt"
    },
    "contact_handle": {
      "type": "string",
      "description": "Optional contact (email or handle) for the operator review"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

research_paper

The research paper: $1.00; $2.00 with the provenance pack — paper plus its proof. bundle defaults to paper; prior receipt: $1.00 upgrade. Licensed to your wallet. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $1.00, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/research/paper.

Argument	Type	Description
bundle	string	Delivery tier: 'paper' ($1.00) or 'paper+provenance' ($2.00, paper plus the corpus proof pack). Defaults to 'paper'
paper_id*	string	Catalog ID of the paper, e.g. 'the-discontinuity-20260922'. Unknown IDs are rejected
buyer_alias	string	Optional license display name (3-32 chars: letters, digits, . _ -). Defaults to the first 8 hex chars of the buyer wallet
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
prior_receipt_id	string	Optional prior research_paper receipt id for receipt-carried tier pricing on the paper+provenance bundle

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "paper_id",
    "idempotency_key"
  ],
  "properties": {
    "bundle": {
      "type": "string",
      "description": "Delivery tier: 'paper' ($1.00) or 'paper+provenance' ($2.00, paper plus the corpus proof pack). Defaults to 'paper'"
    },
    "paper_id": {
      "type": "string",
      "description": "Catalog ID of the paper, e.g. 'the-discontinuity-20260922'. Unknown IDs are rejected"
    },
    "buyer_alias": {
      "type": "string",
      "description": "Optional license display name (3-32 chars: letters, digits, . _ -). Defaults to the first 8 hex chars of the buyer wallet"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    },
    "prior_receipt_id": {
      "type": "string",
      "description": "Optional prior research_paper receipt id for receipt-carried tier pricing on the paper+provenance bundle"
    }
  },
  "additionalProperties": false
}

ticker_shelf

Shop an idea: delayed scan — a ticker, two compared, or a theme — expressions fitting your budget, freshness-labeled, signed receipt. budget_usd omitted: uncapped. Ideas only — no orders placed. POST to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/shelf.

Argument	Type	Description
query*	string	What to shop for: "a ticker", "a ticker, $5 budget", "COMPARE two tickers", "BEST a theme, $25 budget" (max 200 chars)
max_rows	number	Rows on the shelf, 3-10 (default 10)
objective	string	convexity (default), long-clock, fast-heat, tail, income, leveraged
budget_usd	number	Hard budget gate in USD (1/5/10/25/50/100 supported; omit for uncapped)
idempotency_key*	string	Client-generated UUID v4, one per logical request. Replaying the same key on the same tool returns the original receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "query",
    "idempotency_key"
  ],
  "properties": {
    "query": {
      "type": "string",
      "description": "What to shop for: \"a ticker\", \"a ticker, $5 budget\", \"COMPARE two tickers\", \"BEST a theme, $25 budget\" (max 200 chars)"
    },
    "max_rows": {
      "type": "number",
      "description": "Rows on the shelf, 3-10 (default 10)"
    },
    "objective": {
      "type": "string",
      "description": "convexity (default), long-clock, fast-heat, tail, income, leveraged"
    },
    "budget_usd": {
      "type": "number",
      "description": "Hard budget gate in USD (1/5/10/25/50/100 supported; omit for uncapped)"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Client-generated UUID v4, one per logical request. Replaying the same key on the same tool returns the original receipt."
    }
  },
  "additionalProperties": false
}

trust_assurance

Action gate: endpoint, action, amount, permissions probed unpaid — ALLOW, RESTRICT, ASK_HUMAN, or QUARANTINE. Verdict: trust_report. Terms: trust_preflight. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/assurance/check.

Argument	Type	Description
action*	string	The action the agent intends to take, e.g. 'transfer' (required, max 200 chars)
context	string	Optional free-text context for the assessment (truncated to 2000 chars)
amount_usdc*	string	Amount at stake, as a positive decimal string, e.g. '0.25'
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.
provider_endpoint*	string	HTTPS URL of the provider to assess (max 2000 chars; no credentials in URL)
permissions_requested*	array	Permissions the action needs, e.g. ['spend']. Non-empty array, max 50 entries; each entry truncated to 200 chars

trust_preflight

Before paying: who is paid, what's delivered, what changed — signed verdict against your policies. Free quote: dry_run=true. Endpoint verdict: trust_report. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/preflight/check.

Argument	Type	Description
intent*	object	The intended invocation: operation (required), params_summary (sha256 of canonical params), advertised_cost_usdc
policy	array	Policy strings (max 20)
context	object	principal_wallet + chain. Optional.
dry_run	boolean	true = free dry-run, intercepted before the payment gate
subject*	object	The spend target: server_id (required), artifact (mcpb:// \| oci:// \| https://), claimed_version
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

trust_report

Buy/don't-buy verdict on an x402 endpoint: probed unpaid, signed PROCEED, VERIFY_FIRST, or DO_NOT_PAY. Terms: trust_preflight. Action gate: trust_assurance. POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/trust/report.

Argument	Type	Description
url*	string	HTTPS URL of the candidate x402 endpoint to probe (max 2000 chars; no credentials in URL). Probed unpaid via GET, falling back to an empty-body POST when GET returns 404/405
idempotency_key*	string	Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url",
    "idempotency_key"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "HTTPS URL of the candidate x402 endpoint to probe (max 2000 chars; no credentials in URL). Probed unpaid via GET, falling back to an empty-body POST when GET returns 404/405"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "agent_id",
    "reason",
    "revocation_signature"
  ],
  "properties": {
    "reason": {
      "type": "string",
      "description": "Why the Agent ID is being retired (required, max 500 characters)"
    },
    "agent_id": {
      "type": "string",
      "description": "The Agent ID string returned at issuance (64 hex characters; case-insensitive). Unknown IDs are rejected"
    },
    "idempotency_key": {
      "type": "string",
      "description": "Optional idempotency key: UUID v4 (client-generated; published example keys are rejected). When provided, replaying the same key returns the original receipt instead of re-running the action; when omitted, no dedupe occurs. Keys are scoped per tool and per payer account: the same key on another tool — or from another wallet — is unrelated."
    },
    "revocation_signature": {
      "type": "string",
      "description": "Hex signature over the exact UTF-8 message agent-id-revoke:<agent_id> (64-char lowercase ID, no trailing newline). EIP-191: personal_sign the message STRING (personal_sign envelope REQUIRED — raw ECDSA will not verify), 0x 65-byte hex r||s||v (v=27/28). ed25519: nacl.sign.detached over the message bytes, 64-byte hex. Signer: the principal's on-file revocation key, or the Embassy signer for cause"
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "subject",
    "intent",
    "idempotency_key"
  ],
  "properties": {
    "intent": {
      "type": "object",
      "required": [
        "operation"
      ],
      "properties": {
        "operation": {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        "params_summary": {
          "type": "string",
          "maxLength": 200
        },
        "advertised_cost_usdc": {
          "type": "string",
          "maxLength": 20
        }
      },
      "description": "The intended invocation: operation (required), params_summary (sha256 of canonical params), advertised_cost_usdc",
      "additionalProperties": false
    },
    "policy": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 200,
        "minLength": 1
      },
      "maxItems": 20,
      "description": "Policy strings (max 20)"
    },
    "context": {
      "type": "object",
      "properties": {
        "chain": {
          "type": "string",
          "maxLength": 30
        },
        "principal_wallet": {
          "type": "string",
          "maxLength": 100
        }
      },
      "description": "principal_wallet + chain. Optional.",
      "additionalProperties": false
    },
    "dry_run": {
      "type": "boolean",
      "description": "true = free dry-run, intercepted before the payment gate"
    },
    "subject": {
      "type": "object",
      "required": [
        "server_id"
      ],
      "properties": {
        "artifact": {
          "type": "string",
          "maxLength": 2000
        },
        "server_id": {
          "type": "string",
          "maxLength": 500,
          "minLength": 1
        },
        "claimed_version": {
          "type": "string",
          "maxLength": 100
        }
      },
      "description": "The spend target: server_id (required), artifact (mcpb:// | oci:// | https://), claimed_version",
      "additionalProperties": false
    },
    "idempotency_key": {
      "type": "string",
      "description": "Idempotency key: UUID v4, client-generated, one per logical request. Replaying the same key on this tool returns the original receipt — the action is not re-run, and the first request's receipt wins even if you resend different inputs. Published example keys are rejected. Keys are scoped per tool and per payer account: a key never returns another wallet's receipt."
    }
  },
  "additionalProperties": false
}