X402-market MCP Server

X402-market is an MCP integration. Let AI agents pay-per-call for any HTTP API via x402 on Base mainnet. One tool: pay_and_call.

Packages and local setup

The published npm package is @x402-market/mcp-server, version 0.2.0-alpha.1. Its declared MCP transport is stdio.

The package declares MARKET_API_URL: Marketplace API base URL.; MCP_BUYER_PRIVATE_KEY: Funded buyer wallet private key (0x-prefixed). Required for pay_and_call; read-only tools work without it.; BASE_RPC_URL: Base RPC endpoint. Defaults to Base mainnet public RPC; Alchemy/QuickNode recommended for higher rate limits.; BASE_CHAIN_ID: 8453 = Base mainnet (default, matches live listings). 84532 = Base Sepolia testnet.; MCP_MAX_PRICE: Hard cap on per-call cost (USDC). Refuses to pay above this..

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry · Project repository · Project website. This profile uses version 0.2.0-alpha.1 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

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