DuckTap
by zanni098
Deterministic CLI factory that transforms OpenAPI specs into working MCP servers, Python CLIs, and agent skills.
What it does
DuckTap is a developer tool that converts OpenAPI specifications or HAR files into fully functional MCP servers and CLIs. Unlike LLM-based generators, DuckTap is deterministic, meaning the same spec always produces the same code, making it ideal for CI/CD pipelines.
Tools
press: The primary tool to discover and generate MCP servers and CLIs from a source.research: Discovers and emits normalized APISpec JSON without generating code.sniff: Uses Playwright to capture traffic from a website and generate a spec.scorecard: Grades the quality and coverage of a generated server.shipcheck: Performs structural and runtime sanity checks on generated artifacts.
Installation
Install via pip:
pip install ducktap
Then use ducktap press <url> to generate an MCP server in the ./out directory.
Supported hosts
- Claude Desktop
- Cursor
- Claude Code
Quick install
pip install ducktapInformation
- Pricing
- free
- Published
- 6/5/2026
- stars
- 0
Categories
Choose your AI client and follow the steps below.
Cursor
Generated as an `.mdc` file in the output directory.Claude Desktop
Use `ducktap press <spec>` to generate the server, then add the resulting path to your config.Related Apps
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