Coal — Payments for AI agents

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.github.emmanuel39hanks/coal",
  "description": "Payment rails for AI agents. Pay merchants in USDC on Base. Dual-protocol: x402 + OKX APP.",
  "title": "Coal — Payments for AI agents",
  "repository": {
    "url": "https://github.com/emmanuel39hanks/coal",
    "source": "github",
    "subfolder": "examples/coal-mcp-server"
  },
  "version": "1.3.0",
  "websiteUrl": "https://usecoal.xyz",
  "remotes": [
    {
      "type": "streamable-http",
      "url": "https://mcp.usecoal.xyz/api/mcp",
      "headers": [
        {
          "description": "Wallet private key (0x... 64-char hex). Signs payments via EIP-3009 on Base. Optional — read-only tools work without it.",
          "isSecret": true,
          "name": "X-Coal-Agent-Key"
        },
        {
          "description": "Coal API key for create_checkout + query_merchant_memory. Get one at https://usecoal.xyz/console/keys. Optional.",
          "isSecret": true,
          "name": "X-Coal-Api-Key"
        }
      ]
    }
  ]
}