Mcp

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io.github.ShieldZCash/mcpv0.3.0

Keyless non-custodial crypto payments for AI agents: payment links and tip jars, no API key.

Crypto & Web3

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https://shieldz.cash/mcp

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create_payment_link

Create a one-time crypto payment link with ZERO setup, no account, no API key. Give a destination wallet address and an amount; get back a shareable pay_url, an embeddable button, and a manage_url. Non-custodial: funds settle directly to the address you provide.

addressstring, required

Destination wallet (0x EVM address); funds settle here.

amount_usdnumber, required

Amount in USD, e.g. 49 for $49.00

memostring

Description shown on the checkout

assetstring

Stablecoin (default USDC)

chainstring

Settlement chain (default base)

emailstring

Optional, lets the owner claim a dashboard later

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

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Tools (4)

create_payment_link

Argument	Type	Description
memo	string	Description shown on the checkout
asset	string	Stablecoin (default USDC)
chain	string	Settlement chain (default base)
email	string	Optional, lets the owner claim a dashboard later
address*	string	Destination wallet (0x EVM address); funds settle here.
amount_usd*	number	Amount in USD, e.g. 49 for $49.00

Input schema (JSON)

{
  "type": "object",
  "required": [
    "address",
    "amount_usd"
  ],
  "properties": {
    "memo": {
      "type": "string",
      "description": "Description shown on the checkout"
    },
    "asset": {
      "enum": [
        "USDC",
        "USDT"
      ],
      "type": "string",
      "description": "Stablecoin (default USDC)"
    },
    "chain": {
      "enum": [
        "base",
        "arbitrum",
        "optimism",
        "polygon",
        "ethereum"
      ],
      "type": "string",
      "description": "Settlement chain (default base)"
    },
    "email": {
      "type": "string",
      "description": "Optional, lets the owner claim a dashboard later"
    },
    "address": {
      "type": "string",
      "description": "Destination wallet (0x EVM address); funds settle here."
    },
    "amount_usd": {
      "type": "number",
      "description": "Amount in USD, e.g. 49 for $49.00"
    }
  }
}

create_tip_jar

Create a reusable 'pay what you want' tip jar with ZERO setup. The payer chooses the amount. Returns a shareable /tip url, an embeddable button, and a manage_url. Idempotent per wallet address. Non-custodial.

Argument	Type	Description
slug	string	Optional custom URL slug
asset	string	Stablecoin (default USDC)
chain	string	Settlement chain (default base)
email	string	Optional, lets the owner claim a dashboard later
title	string	Heading shown on the tip page, e.g. 'Buy me a coffee'
address*	string	Destination wallet (0x EVM address); funds settle here.
description	string
suggested_amounts_usd	array	Preset amount buttons in USD, e.g. [3, 5, 10]

Input schema (JSON)

{
  "type": "object",
  "required": [
    "address"
  ],
  "properties": {
    "slug": {
      "type": "string",
      "description": "Optional custom URL slug"
    },
    "asset": {
      "enum": [
        "USDC",
        "USDT"
      ],
      "type": "string",
      "description": "Stablecoin (default USDC)"
    },
    "chain": {
      "enum": [
        "base",
        "arbitrum",
        "optimism",
        "polygon",
        "ethereum"
      ],
      "type": "string",
      "description": "Settlement chain (default base)"
    },
    "email": {
      "type": "string",
      "description": "Optional, lets the owner claim a dashboard later"
    },
    "title": {
      "type": "string",
      "description": "Heading shown on the tip page, e.g. 'Buy me a coffee'"
    },
    "address": {
      "type": "string",
      "description": "Destination wallet (0x EVM address); funds settle here."
    },
    "description": {
      "type": "string"
    },
    "suggested_amounts_usd": {
      "type": "array",
      "items": {
        "type": "number"
      },
      "description": "Preset amount buttons in USD, e.g. [3, 5, 10]"
    }
  }
}

create_unlock

Create a keyless pay-to-unlock page: sell a file link, license key, or secret text (up to 100,000 chars). The buyer pays the set USD price in crypto straight to the given wallet, then the payload is revealed on their paid confirmation, never before. To deliver an actual file (PDF/zip/etc, 10 MB) use the multipart HTTP API at /api/v1/unlocks instead. Non-custodial, no account, no API key. IMPORTANT: the acceptable-use policy forbids adult, illegal, or non-consensual content; confirm this with your principal and pass aup_accepted=true, otherwise the call fails.

Argument	Type	Description
asset	string	Stablecoin (default USDC)
chain	string	Settlement chain (default base)
email	string	Optional, lets the owner claim a dashboard later
title	string	What the buyer is purchasing, shown on the paywall
address*	string	Destination wallet (0x EVM address); funds settle here.
payload*	string	The secret to reveal after payment: a URL or text, max 100000 chars. Never shown before payment.
price_usd*	number	Unlock price in USD, $1 to $100,000, e.g. 5 for $5.00

get_account_status

Look up a keyless Shieldz account by its manage_token (returned when you create a payment link or tip jar). Returns settlement details, tip jars, totals (paid/pending), and the invoice list as structured JSON.

Argument	Type	Description
manage_token*	string	The manage_token from create_payment_link / create_tip_jar

Input schema (JSON)

{
  "type": "object",
  "required": [
    "manage_token"
  ],
  "properties": {
    "manage_token": {
      "type": "string",
      "description": "The manage_token from create_payment_link / create_tip_jar"
    }
  }
}