Source: https://seerepo.com/r/jj-vcs/jj
Markdown source: https://seerepo.com/r/jj-vcs/jj.md
Description: jj-vcs/jj is a Rust repo with 284,964 lines written. jj is built with Tokio. AI signed 0.1% of the 12,142 commits of jj.

# What's inside jj-vcs/jj

jj-vcs/jj is a Rust repo with 284,964 lines written. jj is built with Tokio. AI signed 0.1% of the 12,142 commits of jj.

Its description on GitHub: “A Git-compatible VCS that is both simple and powerful”

Rust · Apache-2.0 · 32,392 stars · GitHub: https://github.com/jj-vcs/jj

Read on November 7, 2026, at commit 7fdb0d1.

## More on this repo

- [What is jj built with?](https://seerepo.com/r/jj-vcs/jj/built): jj is built with Tokio.
- [How much of jj did AI write?](https://seerepo.com/r/jj-vcs/jj/ai): AI signed 0.1% of the 12,142 commits of jj.

## In figures

- 284,964 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 313 source files: The same as the lines: product, tests, schemas and tooling. What’s generated doesn’t count.
- 128 test files: The files that test the code.
- 10 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 jj-vcs/jj?

jj-vcs/jj is a Rust repo with 284,964 lines written. Its description on GitHub: “A Git-compatible VCS that is both simple and powerful”

The proof: [its page on GitHub](https://github.com/jj-vcs/jj)

### What is jj built with?

jj is built with Tokio.

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

### How much of jj did AI write?

AI signed 0.1% of the 12,142 commits of jj.

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

### What license does jj have?

jj is released under the Apache-2.0 license.

The proof: [its page on GitHub](https://github.com/jj-vcs/jj)

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

jj had 32,392 stars on GitHub on November 7, 2026.

The proof: [its page on GitHub](https://github.com/jj-vcs/jj)

## Add this badge to your README

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

```markdown
[![jj-vcs/jj on SeeRepo](https://seerepo.com/badge/jj-vcs/jj.svg)](https://seerepo.com/r/jj-vcs/jj?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.