x402 Seller MCP Server

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

Repository Registry

What is the x402 Seller MCP server?

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

How to install x402 Seller

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

BUYER_PRIVATE_KEY
secret
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.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "x402-seller-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "x402-seller-mcp"
      ],
      "env": {
        "BUYER_PRIVATE_KEY": "<YOUR_BUYER_PRIVATE_KEY>",
        "X402_ORIGIN": "<YOUR_X402_ORIGIN>"
      }
    }
  }
}

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