Public MCP wrapper for SubDownload.Fetch YouTube transcripts, search videos, browse channels and playlists — instant YouTube data for your AI workflow.
SubDownload MCP Server
以下摘录自该仓库的 README(片段) · 在 GitHub 读完整 README →
SubDownload exposes YouTube as an MCP-native data source. Connect once via OAuth and your AI agent gets tools to summarize videos, fetch full transcripts (including videos without captions, via AI ASR), search channels and playlists, and save everything into a per-user knowledge base for cross-session recall.
- **Hosted endpoint**: https://api.subdownload.com/mcp
- **Homepage**: https://subdownload.com?utm_source=gthb_awesome_9jqqed&utm_medium=code&utm_campaign=Awesome
- **Docs**: https://api.subdownload.com/docs/mcp
- **Glama (connector)**: https://glama.ai/mcp/connectors/com.subdownload.api/sub-download
- **Glama (server)**: https://glama.ai/mcp/servers/SubDownload/subdownload-mcp
> The recommended setup is to point your MCP client directly at the hosted endpoint above and authenticate via OAuth — see "Quick connect" below. This repo also ships a thin stdio proxy (Node + Docker) for environments that prefer a local subprocess.
Auth
OAuth 2.1 with Dynamic Client Registration (RFC 7591). No pre-shared client_id or client_secret — your MCP client registers itself on first connect.
Discovery (RFC 9728):
1. POST to /mcp without a token returns 401 plus a WWW-Authenticate header pointing to /.well-known/oauth-protected-resource
2. That document points to the authorization server (https://api.subdownload.com)
3. The MCP client follows the standard authorize → callback → token flow with PKCE
**API-key alternative**: every account at https://subdownload.com/account exposes a Bearer token for clients that don't support OAuth.
Tools
| Tool | What it does |
|---|---|
| search_youtube | Keyword search across YouTube |
| fetch_video_info | Video metadata (title, channel, duration, view count) |
| fetch_transcript | Full transcript with timestamps |
| transcribe_video | Generate a transcript with AI ASR for videos that have no captions |
| get_asr_task | Poll an in-progress AI transcription job |
| resolve_channel | Look up a channel by handle, URL, or ID |
| list_channel_videos | List videos on a channel |
| get_channel_latest_videos | Latest videos for a channel |
| search_channel_videos | Search within a single channel |
| list_playlist_videos | List the contents of a playlist |
| save_to_library | Save a video summary or transcript to your personal knowledge base |
| list_library | Browse your saved knowledge base |
| get_library_item | Fetch a single saved item |
Quick connect
Claude Desktop / Cursor / Windsurf / any OAuth-capable MCP client
The first time you use it, the client triggers OAuth and you sign in with Google or LINUX DO. Free credits on signup — no card required.