X402 MCP Server (Official): Install & Setup

Install X402 in Claude Code

Claude Code

claude mcp add x402 -e X402_PRIVATE_KEY=... -- npx -y x402node-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "x402": {
      "command": "npx",
      "args": [
        "-y",
        "x402node-mcp"
      ],
      "env": {
        "X402_PRIVATE_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the X402 MCP server do?

Exposes x402-paid APIs discovered from Coinbase Bazaar, handling USDC micropayments on Base.

Is the X402 MCP server free?

Probably not entirely. The listing mentions pay-per-call, credits or a subscription. Check the provider for current pricing.

Does X402 run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add X402 to Claude Code?

Run: claude mcp add x402 -e X402_PRIVATE_KEY=... -- npx -y x402node-mcp

More developer tools MCP servers

View all

Flipt

flipt-io/mcp-server-flipt

Interact with feature flags in Flipt.

LocalFreeTypeScript

Webvizio

Webvizio/mcp

Converts website and web app feedback and bug reports into context-enriched developer tasks for coding agents via Webvizio.

LocalFreeTypeScript

PatchWarden

jiezeng2004-design/PatchWarden

Local-first safety and verification layer for coding agents: workspace confinement, command allowlists, scope-violation detection and auditable task evidence.

LocalFreeTypeScript

Яндекс Директ API v5

1171

artgas1/yandex-direct-mcp

MCP server for Yandex Direct API v5: 113 methods from the machine-readable schema

LocalAccount needed

Pmpt CLI

pmptwiki/pmpt-cli

Record and share AI-driven development history: saves project milestones with summaries, generates planning prompts and publishes to pmptwiki.

LocalFreeTypeScript

Pixeltable Developer

pixeltable/mcp-server-pixeltable-developer

Pixeltable MCP server for declarative multimodal tables, computed columns, and services.

LocalFree