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x402-market

x402-market

Local
x402-market-api.lien-studio-akiyama.workers.devFinance
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About x402-market

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

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "asaishota": {
      "command": "npx",
      "args": [
        "-y",
        "@x402-market/mcp-server"
      ],
      "env": {
        "MARKET_API_URL": "<MARKET_API_URL>",
        "MCP_BUYER_PRIVATE_KEY": "<MCP_BUYER_PRIVATE_KEY>",
        "BASE_RPC_URL": "<BASE_RPC_URL>",
        "BASE_CHAIN_ID": "<BASE_CHAIN_ID>",
        "MCP_MAX_PRICE": "<MCP_MAX_PRICE>"
      }
    }
  }
}
Run commandnpx -y @x402-market/mcp-server
Environment variables to set
MARKET_API_URLMarketplace API base URL.
MCP_BUYER_PRIVATE_KEYSecretFunded buyer wallet private key (0x-prefixed). Required for pay_and_call; read-only tools work without it.
BASE_RPC_URLBase RPC endpoint. Defaults to Base mainnet public RPC; Alchemy/QuickNode recommended for higher rate limits.
BASE_CHAIN_ID8453 = Base mainnet (default, matches live listings). 84532 = Base Sepolia testnet.
MCP_MAX_PRICEHard cap on per-call cost (USDC). Refuses to pay above this.

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npm@x402-market/mcp-server0.2.0-alpha.1

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

The maintainer has not added details yet. Check the README in the repository.

Comments

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New to MCP?

From what the protocol is to installing your first server, these answers cover most first questions.

An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.