Cuebase

Captions for software

Timed captions for apps and agents.

Cuebase is a Shipfold Labs YouTube transcript API. Paste a link, or call the same captions from an agent through the YouTube transcript MCP server. A repeat of a cached video does not spend a credit.

5 free transcripts a day from this page. The API uses credits.

Example, not a fetch

00:00:00.000
Paste a YouTube link. Cuebase returns the caption track as text, SRT, VTT, or JSON.

00:00:04.200
The same transcript is available from the REST API and from the MCP server.

Example, not a fetch

00:00:00.000
Paste a YouTube link. Cuebase returns the caption track as text, SRT, VTT, or JSON.

00:00:04.200
The same transcript is available from the REST API and from the MCP server.

Fetch a transcript to see SRT.
Fetch a transcript to see VTT.
Fetch a transcript to see JSON.

REST

GET /api/v1/transcript returns JSON, plain text, SRT, or VTT. Batch up to 10 videos in one POST.

MCP

Point an agent at /api/mcp. The tools are get_transcript, get_video, get_transcripts, and get_account.

Credits

A new fetch costs 1 credit. A cache hit costs 0. A failed fetch costs 0. New accounts start with 100 credits.