Official MCP RegistryHosted serveronyx-actions.onrender.com
Onyx
Framework and reference server for building paid MCP tools, with deployed agent tools billed in USDC via x402 on Base and Solana.
Connect to Claude Code
Copyclaude mcp add --transport http onyx https://onyx-actions.onrender.com/mcp/Vendor-hosted remote server: nothing to install locally. If it uses OAuth, Claude opens the vendor login on first use.
Endpoints
- https://onyx-actions.onrender.com/mcp/streamable-http
Published in the official MCP registry as “Onyx”. Verified through the vendor namespace.