x402 Seller

io.github.entreprisedaney33-rgb/x402-seller-mcp

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

View repository →Homepage →

Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "x402-seller-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402-seller-mcp@0.1.1"
      ],
      "env": {
        "BUYER_PRIVATE_KEY": "<your BUYER_PRIVATE_KEY>",
        "X402_ORIGIN": "https://x402-seller-0ay3.onrender.com"
      }
    }
  }
}
Environment variables
  • BUYER_PRIVATE_KEYsecretEVM 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_ORIGINWhich x402-compatible server to expose as MCP tools.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.1.1
Registry
active
Published
9/2/2026

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Add the badge to your site

Show visitors that x402 Seller is listed here — it’s also the link we check for a free listing.

x402 Seller — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-entreprisedaney33-rgb-x402-seller-mcp?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="x402 Seller — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![x402 Seller — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-entreprisedaney33-rgb-x402-seller-mcp?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.