Coin Railz MCP Server
Remote MCP server on the primary domain: POST https://coinrailz.com/mcp (JSON-RPC 2.0). tools/list is open and returns 80 tools with input and output schemas; tool calls are metered (X-API-KEY prepaid credits or x402). A local stdio server ships as the PyPI package coinrailz-mcp. Every tool binds one-to-one to a /x402/ operation in the x402 services OpenAPI (see the tool crosswalk).