MCP Server MCP

x402 Wallet

By github 👁 1 views ▲ 0 votes

Self-custodial x402 wallet for AI agents: pay any service in USDC or $THREE from your own key.

Homepage Verified source GitHub

Install

npx -y @three-ws/[email protected]

Configuration Example

{
  "remotes": [],
  "packages": [
    {
      "registryType": "npm",
      "identifier": "@three-ws/x402-mcp",
      "version": "0.2.2",
      "runtimeHint": "npx",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Base58 (or JSON byte-array) Solana secret key that signs payments and holds the USDC. Not needed for the read tools (find_services, inspect_endpoint, or x402_wallet with an explicit address). Treat like cash.",
          "format": "string",
          "isSecret": true,
          "name": "SOLANA_SECRET_KEY"
        },
        {
          "description": "Solana mainnet RPC endpoint. Defaults to the public cluster — bring your own (Helius / Quicknode / Triton) for production traffic.",
          "format": "string",
          "default": "https://api.mainnet-beta.solana.com",
          "name": "SOLANA_RPC_URL"
        },
        {
          "description": "Max USD a single pay_and_call may spend. Bounds a runaway or injected payment.",
          "format": "number",
          "default": "1",
          "name": "MAX_PAY_USD"
        },
        {
          "description": "When on (default), pay_and_call refuses until re-issued with confirm:true. Set 0/false to disable the gate.",
          "format": "boolean",
          "default": "true",
          "name": "REQUIRE_CONFIRM"
        },
        {
          "description": "Base URL of the three.ws API that serves /api/bazaar/search for find_services. Override only when self-hosting.",
          "format": "string",
          "default": "https://three.ws",
          "name": "THREE_WS_BASE"
        }
      ]
    }
  ]
}

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