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mcp/harbor
Grok

x402-market for Grok

io.github.asaishota/mcp-server

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

client:Grok transport:stdio runtime:npm

Install x402-market in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "mcp-server": {
      "type": "stdio",
      "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>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

x402-market in other clients

x402-market MCP server