Coal — Payments for AI agents

Overview

Coal is an MCP server that provides payment rails for AI agents, enabling direct merchant payments in USDC on Base through a dual-protocol architecture supporting both x402 and OKX APP. Any MCP-compatible AI assistant can invoke Coal's tools to process transactions within agent workflows and conversations.

Coal runs as a remote server at https://mcp.usecoal.xyz/api/mcp and requires only an API key for authentication—no local installation needed. The latest release is v1.3.0, distributed under the MIT license with source code available at emmanuel39hanks/coal on GitHub.

Coal belongs to the AI & Agents category on mcp.site and integrates with all major MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain Coal for emmanuel39hanks, claim this listing to verify ownership, earn the Verified badge, and ensure the information stays accurate.

Installation

Settings → Connectors → Add custom connector
Name: Coal — Payments for AI agents
URL:  https://mcp.usecoal.xyz/api/mcp