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mcp/harbor
Grok

m2mcent for Grok

io.github.evozim/m2mcent

x402 payment wrapper for AI Agents and MCP Servers. USDC settlements on Base L2.

client:Grok transport:stdio runtime:npm

Install m2mcent 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": {
    "m2mcent": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "m2mcent-sdk"
      ],
      "env": {
        "BASE_RPC_URL": "<BASE_RPC_URL>",
        "RELAYER_PRIVATE_KEY": "<RELAYER_PRIVATE_KEY>",
        "TREASURY_ADDRESS": "<TREASURY_ADDRESS>"
      }
    }
  }
}

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

m2mcent in other clients

m2mcent MCP server