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HPP x402 MCP Bridge

MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.

hpp-iohpp-io/x402-mcp-bridgeUpdated Oct 2, 2026

server.json

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.github.hpp-io/x402-mcp-bridge",
  "description": "MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.",
  "title": "HPP x402 MCP Bridge",
  "repository": {
    "url": "https://github.com/hpp-io/x402-mcp-bridge",
    "source": "github"
  },
  "version": "0.1.21",
  "websiteUrl": "https://docs.hpp.io/x402/agents",
  "icons": [
    {
      "src": "https://docs.hpp.io/img/hpp-logo.png",
      "mimeType": "image/png",
      "sizes": [
        "192x192"
      ]
    }
  ],
  "packages": [
    {
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "identifier": "@hpp-io/x402-mcp-bridge",
      "version": "0.1.21",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Delegate EOA private key used to sign payments. Auto-created in the OS keychain if unset.",
          "isSecret": true,
          "name": "DELEGATE_PRIVATE_KEY"
        },
        {
          "description": "Target network: eip155:181228 (HPP Sepolia, default) or eip155:190415 (HPP Mainnet).",
          "name": "HPP_NETWORK"
        },
        {
          "description": "Optional upstream MCP server to proxy. Omit to expose only the local tools.",
          "name": "RESOURCE_SERVER_URL"
        },
        {
          "description": "Safe address for governance (Safe) mode. Set together with ALLOWANCE_MODULE_ADDRESS.",
          "name": "SAFE_ADDRESS"
        },
        {
          "description": "Safe AllowanceModule address for governance (Safe) mode. Set together with SAFE_ADDRESS.",
          "name": "ALLOWANCE_MODULE_ADDRESS"
        }
      ]
    }
  ]
}

Permissions

DeclaredDetected
Runs code—node
Installs—npm:@hpp-io/x402-mcp-bridge@0.1.21
Runs install scripts—npm:@hpp-io/x402-mcp-bridge
NetworkNoneNone
Needs credentialsDELEGATE_PRIVATE_KEYDELEGATE_PRIVATE_KEY
Outside the workspace—None
Agent tools—None

Checks

Low risk · Nothing worth a warning was found.

Not reviewed by a person · Checked by rules; the model review is not switched on yet.

Versions

  1. #10.1.21latestOct 7, 2026