MCP serverOfficial registry

X402 Market

Let AI agents pay-per-call for any HTTP API via x402 on Base mainnet. One tool: pay_and_call.

by io.github.AsaiShotav0.2.0-alpha.1GitHub npm Website

Power your agent

Add this server

The publisher's own command. Not a PlugMCP endpoint.

Local command

npx -y @x402-market/[email protected]

Credentials from the publisher

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.

Provider

Claude Code

MARKET_API_URL=<value> MCP_BUYER_PRIVATE_KEY=<secret> BASE_RPC_URL=<value> BASE_CHAIN_ID=<value> MCP_MAX_PRICE=<value> claude mcp add io.github.asaishota-mcp-server -- npx -y @x402-market/[email protected]

Run in a terminal.

Claude Desktop

{
  "mcpServers": {
    "io.github.asaishota-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@x402-market/[email protected]"
      ],
      "env": {
        "MARKET_API_URL": "<value>",
        "MCP_BUYER_PRIVATE_KEY": "<secret>",
        "BASE_RPC_URL": "<value>",
        "BASE_CHAIN_ID": "<value>",
        "MCP_MAX_PRICE": "<value>"
      }
    }
  }
}

claude_desktop_config.json

Step-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Related MCP

X402 Market

Add this server

Host a copy with our keys and logs.

More like this

Firecrawl

Notion

Context7