Claude Engineer Toolkit

🛠️ claude-engineer-toolkit (`cet`)

Claude AI in your terminal. Not a chatbot wrapper — **sharp, composable tools for backend engineers who ship.**

[](https://badge.fury.io/py/claude-engineer-toolkit) [](https://www.python.org/downloads/) [](https://opensource.org/licenses/MIT) [](tests/) [](CONTRIBUTING.md)

pip install claude-engineer-toolkit
export ANTHROPIC_API_KEY=your_key

cet explain legacy_auth.php             # understand any code in seconds
cet migrate legacy_auth.php             # PHP to Python migration plan
cet pr --branch main                    # review your diff like a senior engineer
cet spec ./routes/ --framework fastapi  # generate OpenAPI spec from code
cet test user_service.py                # generate pytest scaffolds
cet doc auth.py --inplace               # add inline docstrings
cet env .env.example                    # audit for security issues
cet changelog                           # generate CHANGELOG from commits

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The problem

You open a legacy file. 400 lines of PHP written in 2014. No docs, no tests, no author. You need to understand it in 10 minutes.

Or: you are reviewing a PR while context-switching from three other things. You want a second opinion before you approve.

Or: you need an OpenAPI spec for a service that was never documented.

`cet` solves these. One command, one answer, back to work.

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Tools

`cet explain` — understand any code instantly

Any language. Any size. Structured breakdown: what it does, how it works, what will bite you.

cet explain legacy_payment_processor.php
cet explain src/auth/jwt_middleware.go --focus security
c