Coal — Payments for AI agents MCP Server

io.github.emmanuel39hanks/coal

What is the Coal — Payments for AI agents MCP server?

Payment rails for AI agents. Pay merchants in USDC on Base. Dual-protocol: x402 + OKX APP.

Copy-paste configuration for popular MCP clients.

transport: http

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

Environment / auth

X-Coal-Agent-Key
secret
Wallet private key (0x... 64-char hex). Signs payments via EIP-3009 on Base. Optional — read-only tools work without it.
X-Coal-Api-Key
secret
Coal API key for create_checkout + query_merchant_memory. Get one at https://usecoal.xyz/console/keys. Optional.

~/.cursor/mcp.json

{
  "mcpServers": {
    "coal": {
      "url": "https://mcp.usecoal.xyz/api/mcp"
    }
  }
}

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