Coal — Payments for AI agents
Payment rails for AI agents. Pay merchants in USDC on Base. Dual-protocol: x402 + OKX APP.
Hosted
Streamable HTTPofficialserviceDeployment
Hosted
streamable-http
https://mcp.usecoal.xyz/api/mcpHeaders
X-Coal-Agent-Key
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
Coal API key for create_checkout + query_merchant_memory. Get one at https://usecoal.xyz/console/keys. Optional.