RequestTap MCP Server

MCP server for the RequestTap API — the Agentic API Marketplace on Base.

Gives AI agents the ability to discover, call, and manage paid APIs on the RequestTap marketplace using the Model Context Protocol.

Tools

Tool	Description
requesttap_discover	List all available paid APIs on the marketplace
requesttap_discover_schema	Get MCP/A2A-compatible tool schema for all APIs
requesttap_discover_tool	Get details for a single API tool
requesttap_call	Call a paid API endpoint with x402 USDC payment
requesttap_create_mandate	Create an AP2 spending mandate
requesttap_list_mandates	List your spending mandates
requesttap_get_mandate	Get mandate details
requesttap_revoke_mandate	Revoke a spending mandate
requesttap_receipts	Query transaction receipts
requesttap_get_receipt	Get a single receipt
requesttap_receipt_link	Get a receipt's hash-chain link

Setup

Environment Variables

Variable	Required	Description
REQUESTTAP_API_KEY	Yes (for gateway/mandate/receipt calls)	Your RequestTap agent API key (rta_...)
REQUESTTAP_MANDATE_ID	No	Default AP2 mandate ID to include with requests
REQUESTTAP_BASE_URL	No	API base URL (defaults to https://api.requesttap.ai)

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "requesttap": {
      "command": "npx",
      "args": ["-y", "requesttap-mcp"],
      "env": {
        "REQUESTTAP_API_KEY": "rta_your_api_key_here",
        "REQUESTTAP_MANDATE_ID": "mnd_your_mandate_id"
      }
    }
  }
}

Cursor

Add to your Cursor MCP settings:

{
  "mcpServers": {
    "requesttap": {
      "command": "npx",
      "args": ["-y", "requesttap-mcp"],
      "env": {
        "REQUESTTAP_API_KEY": "rta_your_api_key_here"
      }
    }
  }
}

Build from source

git clone https://github.com/RequestTap/RequestTap-MCP.git
cd RequestTap-MCP
npm install
npm run build

Authentication

• Discovery endpoints are public and require no authentication.
• Gateway calls require an API key (X-Api-Key) and x402 USDC payment token (X-402-Payment).
• Mandate and receipt endpoints require an API key or JWT.

Every successful gateway call returns a verifiable receipt in the x-receipt response header. Receipts are Keccak256 hash-chained for tamper-proof auditing.

License

MIT