Source: https://seerepo.com/r/nextauthjs/next-auth
Markdown source: https://seerepo.com/r/nextauthjs/next-auth.md
Description: nextauthjs/next-auth is a TypeScript repo with 55,839 lines written. next-auth uses MongoDB, Postgres, Supabase, and Firebase.

# What's inside nextauthjs/next-auth

nextauthjs/next-auth is a TypeScript repo with 55,839 lines written. next-auth uses MongoDB, Postgres, Supabase, and Firebase. AI signed 0.1% of the 3,882 commits of next-auth.

Its description on GitHub: “Authentication for the Web.”

TypeScript · ISC · 28,376 stars · GitHub: https://github.com/nextauthjs/next-auth

Read on November 2, 2026, at commit a1a16a5.

## More on this repo

- [What is next-auth built with?](https://seerepo.com/r/nextauthjs/next-auth/built): next-auth uses MongoDB, Postgres, Supabase, and Firebase.
- [How much of next-auth did AI write?](https://seerepo.com/r/nextauthjs/next-auth/ai): AI signed 0.1% of the 3,882 commits of next-auth.

## In figures

- 55,839 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 363 files: The product’s, not counting tests.
- 96 test files: The files that test the code.
- 4 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 nextauthjs/next-auth?

nextauthjs/next-auth is a TypeScript repo with 55,839 lines written. Its description on GitHub: “Authentication for the Web.”

The proof: [its page on GitHub](https://github.com/nextauthjs/next-auth)

### What is next-auth built with?

next-auth uses MongoDB, Postgres, Supabase, and Firebase.

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

### How much of next-auth did AI write?

AI signed 0.1% of the 3,882 commits of next-auth.

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

### What license does next-auth have?

next-auth is released under the ISC license.

The proof: [its page on GitHub](https://github.com/nextauthjs/next-auth)

### How many stars does next-auth have on GitHub?

next-auth had 28,376 stars on GitHub on November 2, 2026.

The proof: [its page on GitHub](https://github.com/nextauthjs/next-auth)

## Add this badge to your README

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

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