Yes, X402engine is free to use.

How do I install X402engine?

X402engine is a local plugin. Install it using npm package: x402engine-mcp and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

What credentials does X402engine need?

X402engine requires the following credentials or environment variables: X402_BASE_URL, X402_DEV_BYPASS, X402_PAYMENT_HEADER. You can find setup instructions on the server detail page.

What AI apps work with X402engine?

X402engine uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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X402engine MCP Server

by Agentc22

Developer ToolsLow Risk10.0MCP RegistryLocal

Free

Server data from the Official MCP Registry

50+ pay-per-call APIs for AI agents — images, LLM, code, crypto, travel & more via x402

About

50+ pay-per-call APIs for AI agents — images, LLM, code, crypto, travel & more via x402

What You'll Need

Set these up before or after installing:

Gateway URL (default: https://x402engine.app)Optional

Environment variable: X402_BASE_URL

Dev bypass secret to skip payments during testingRequired

Environment variable: X402_DEV_BYPASS

Pre-signed x402 payment header for automatic paymentRequired

Environment variable: X402_PAYMENT_HEADER

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-agentc22-x402engine-mcp": {
      "env": {
        "X402_BASE_URL": "your-x402-base-url-here",
        "X402_DEV_BYPASS": "your-x402-dev-bypass-here",
        "X402_PAYMENT_HEADER": "your-x402-payment-header-here"
      },
      "args": [
        "-y",
        "x402engine-mcp"
      ],
      "command": "npx"
    }
  }
}

Security Report

10.0

Low Risk10.0Low Risk

Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.

3 files analyzed · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

file_system

Check that this permission is expected for this type of plugin.

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Local

X402engine MCP Server

About

What You'll Need

How to Install

Security Report

Permissions Required

Findings (1)

Reviews

No reviews yet

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X402engine MCP Server

About

What You'll Need

How to Install

Security Report

Permissions Required

Findings (1)

Reviews

No reviews yet

More Developer Tools MCP Servers

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mcp-creator-python

mcp-creator-typescript

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Document Converter