X402 Seller MCP Server

X402 Seller is an MCP integration. Pay-per-call MCP tools (crypto/DeFi data, web reading, AI tasks) in USDC over x402 on Base.

Packages and local setup

The published npm package is x402-seller-mcp, version 0.1.1. Its declared MCP transport is stdio.

The package declares BUYER_PRIVATE_KEY: EVM private key (0x...) of a throwaway wallet funded with a small amount of USDC on Base. Leave unset for explain-only mode (tool calls describe the 402 payment challenge instead of paying).; X402_ORIGIN: Which x402-compatible server to expose as MCP tools..

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 0.1.1 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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