DuckTap: Deterministically Generate MCP Servers from OpenAPI Specs Without LLMs
zanni098 · reddit · 2026-08-02
An indie developer open-sourced DuckTap, a CLI tool that deterministically generates MCP Servers from OpenAPI specifications.
Unlike LLM-based code generation, it parses the spec directly to emit code, ensuring consistent outputs every time without requiring an API key, making it CI-friendly. It currently ships with 30 built-in recipes for popular APIs like Stripe and GitHub. The author invites the community to try and "break" it with weird API specs and contribute new API integrations via good first issues.
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