Source: https://seerepo.com/r/cosscom/ui
Markdown source: https://seerepo.com/r/cosscom/ui.md
Description: cosscom/ui is a TypeScript repo with 160,398 lines written. ui is built with React, Next.js, and fumadocs-core. AI signed 6.2% of the 1,057 commits of ui.

# What's inside cosscom/ui

cosscom/ui is a TypeScript repo with 160,398 lines written. ui is built with React, Next.js, and fumadocs-core. AI signed 6.2% of the 1,057 commits of ui.

Its description on GitHub: “coss.com/ui is the official design system of Cal.com”

TypeScript · MIT · 10,841 stars · GitHub: https://github.com/cosscom/ui

Read on November 13, 2026, at commit fe6ffa8.

## More on this repo

- [What is ui built with?](https://seerepo.com/r/cosscom/ui/built): ui is built with React, Next.js, and fumadocs-core.
- [How much of ui did AI write?](https://seerepo.com/r/cosscom/ui/ai): AI signed 6.2% of the 1,057 commits of ui.

## In figures

- 160,398 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 1,547 product files: The product’s own files. Test files are counted apart.
- 9 test files: The files that test the code.
- 33 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 cosscom/ui?

cosscom/ui is a TypeScript repo with 160,398 lines written. Its description on GitHub: “coss.com/ui is the official design system of Cal.com”

The proof: [its page on GitHub](https://github.com/cosscom/ui)

### What is ui built with?

ui is built with React, Next.js, and fumadocs-core.

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

### How much of ui did AI write?

AI signed 6.2% of the 1,057 commits of ui.

The proof: [the commits each tool signed](https://seerepo.com/r/cosscom/ui/ai)

### What license does ui have?

ui is released under the MIT license.

The proof: [its page on GitHub](https://github.com/cosscom/ui)

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

ui had 10,841 stars on GitHub on November 13, 2026.

The proof: [its page on GitHub](https://github.com/cosscom/ui)

## Add this badge to your README

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

```markdown
[![cosscom/ui on SeeRepo](https://seerepo.com/badge/cosscom/ui.svg)](https://seerepo.com/r/cosscom/ui?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.