x402engine MCP

An agent-friendly MCP server for x402engine that lets agents discover and call pay-per-request APIs through HTTP 402, with automatic USDC payment on Base or Solana. It exposes a curated tool set and live discovery for a catalog covering LLMs, image/video generation, web search, code execution, crypto data, audio, travel, and IPFS.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by agentc22

Vendor documentation

What you can do with it

Discover live pay-per-call APIs
Call LLM and image generation APIs
Execute code and scrape web pages
Access crypto wallet data and IPFS

Source and maintenance

Community listingRegistry 1.0.3

mcp-registry: io.github.agentc22/x402engine-mcp@1.0.3 Source repository

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

x402engine-mcp 1.0.3

npm

x402engine-mcp package definition

{
  "version": "1.0.3",
  "transport": "stdio",
  "identifier": "x402engine-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "X402_BASE_URL",
      "description": "Gateway URL (default: https://x402engine.app)"
    },
    {
      "name": "X402_DEV_BYPASS",
      "description": "Dev bypass secret to skip payments during testing"
    },
    {
      "name": "X402_PAYMENT_HEADER",
      "description": "Pre-signed x402 payment header for automatic payment"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "x402engine-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402engine-mcp@1.0.3"
      ],
      "env": {
        "X402_BASE_URL": "<YOUR_X402_BASE_URL>",
        "X402_DEV_BYPASS": "<YOUR_X402_DEV_BYPASS>",
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "x402engine-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402engine-mcp@1.0.3"
      ],
      "env": {
        "X402_BASE_URL": "<YOUR_X402_BASE_URL>",
        "X402_DEV_BYPASS": "<YOUR_X402_DEV_BYPASS>",
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "x402engine-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "x402engine-mcp@1.0.3"
      ],
      "env": {
        "X402_BASE_URL": "<YOUR_X402_BASE_URL>",
        "X402_DEV_BYPASS": "<YOUR_X402_DEV_BYPASS>",
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "x402engine-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402engine-mcp@1.0.3"
      ],
      "env": {
        "X402_BASE_URL": "<YOUR_X402_BASE_URL>",
        "X402_DEV_BYPASS": "<YOUR_X402_DEV_BYPASS>",
        "X402_PAYMENT_HEADER": "<YOUR_X402_PAYMENT_HEADER>"
      }
    }
  }
}

Let your agent find its tools

Find servers like x402engine MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

Connect Koskamo Explore workflows

See all 4,373