> ## Documentation Index
> Fetch the complete documentation index at: https://acem-52171079.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Extensions

> Integration with external platforms

Extensions allow the Collector to ingest content from sources other than local files, such as video platforms or code repositories.

## YouTube Extension

**Module**: `app/extensions/youtube.py`

Fetches transcripts from YouTube videos. It uses a robust fallback strategy:

1. **Primary**: `youtube_transcript_api` (official-like API).
2. **Secondary**: `yt-dlp` (extracts subtitles/captions).
3. **Fallback**: `playwright` (browser-based automation).

### Cookies Configuration

For reliable extraction (especially for age-restricted or member-only content), you can provide a Netscape-format cookies file.

* **Env Variable**: `YT_COOKIES_FILE` pointing to the path of `cookies.txt`.
* **Default**: Looks for `app/cookies/youtube_cookies.txt`.

## GitHub Extension

**Module**: `app/extensions/github.py`

Clones and processes repositories.

* **Endpoint**: `/ext/github/process`
* **Auth**: Requires `GITHUB_TOKEN` in environment variables.

## GitLab Extension

**Module**: `app/extensions/gitlab.py`

Similar to GitHub, but for GitLab repositories.

* **Auth**: Requires `GITLAB_TOKEN`.