Source: https://seerepo.com/r/astral-sh/ruff
Markdown source: https://seerepo.com/r/astral-sh/ruff.md
Description: astral-sh/ruff is a Rust repo with 988,162 lines written. SeeRepo read ruff and doesn't recognize any of its technologies yet.

# What's inside astral-sh/ruff

astral-sh/ruff is a Rust repo with 988,162 lines written. SeeRepo read ruff and doesn't recognize any of its technologies yet. AI signed 0.4% of the 17,985 commits of ruff.

Its description on GitHub: “An extremely fast Python linter and code formatter, written in Rust.”

Rust · MIT · 50,458 stars · GitHub: https://github.com/astral-sh/ruff

Read on November 5, 2026, at commit d017c82.

## More on this repo

- [What is ruff built with?](https://seerepo.com/r/astral-sh/ruff/built): SeeRepo read ruff and doesn't recognize any of its technologies yet.
- [How much of ruff did AI write?](https://seerepo.com/r/astral-sh/ruff/ai): AI signed 0.4% of the 17,985 commits of ruff.

## In figures

- 988,162 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 2,832 files: The same as the lines: product, tests, schemas and tooling. What’s generated doesn’t count.
- 2,138 test files: The files that test the code.
- 15 technologies: Each service with the file and line that prove it.

SeeRepo read the facts in its code and kept none of it. AI only helps sort its packages and folders by their names, and never sees its code.

## Frequently asked questions

### What is astral-sh/ruff?

astral-sh/ruff is a Rust repo with 988,162 lines written. Its description on GitHub: “An extremely fast Python linter and code formatter, written in Rust.”

The proof: [its page on GitHub](https://github.com/astral-sh/ruff)

### What is ruff built with?

SeeRepo read ruff and doesn't recognize any of its technologies yet.

The proof: [each service with its file and line](https://seerepo.com/r/astral-sh/ruff/built)

### How much of ruff did AI write?

AI signed 0.4% of the 17,985 commits of ruff.

The proof: [the commits each tool signed](https://seerepo.com/r/astral-sh/ruff/ai)

### What license does ruff have?

ruff is released under the MIT license.

The proof: [its page on GitHub](https://github.com/astral-sh/ruff)

### How many stars does ruff have on GitHub?

ruff had 50,458 stars on GitHub on November 5, 2026.

The proof: [its page on GitHub](https://github.com/astral-sh/ruff)

## Add this badge to your README

It links to this page and updates itself each time SeeRepo reads the repo.

```markdown
[![astral-sh/ruff on SeeRepo](https://seerepo.com/badge/astral-sh/ruff.svg)](https://seerepo.com/r/astral-sh/ruff?de=insignia)
```

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.