io.github.SpaceSheepBoy/justcaptions
justcaptions
Audio transcription, caption correction, translation and 16 video caption styles.
alive probed 2026-10-15 · HTTP 200
9tools
1.8ktokens in Claude Opus 5.5
1.9ktokens in Claude Code
0.9 %of a 200k context window
977o200k_base estimate
850 msto initialize
186 msto list tools
- Endpoint
- https://api.justcaptions.com/mcp (streamable-http)
- Host
- api.justcaptions.com
- Protocol
- 2025-11-25
- Reports itself as
- justcaptions 1.4.0
- Capabilities
- tools
- Instructions
- 433 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-07. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/SpaceSheepBoy/justcaptions-skill
- Website
- https://justcaptions.com/agents/
- Registry
- active, updated 2026-10-14 · registry entry
- Reachable
- 5 of the last 5 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| transcribe_audio | 196 | 20 % |
| translate_captions | 194 | 20 % |
| correct_captions | 182 | 19 % |
| pick_emojis | 153 | 16 % |
| estimate_cost | 92 | 9 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-07 11:09 | alive | 1.6 s | 9 | 1.8k | 977 |
| 2026-10-05 14:27 | alive | 850 ms | 8 | 1.7k | 934 |
| 2026-10-05 00:31 | alive | 395 ms | 8 | 934 | |
| 2026-10-04 10:03 | alive | 1.4 s | 8 | 934 | |
| 2026-10-04 07:56 | alive | 1.3 s | 8 | 934 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.SpaceSheepBoy/justcaptions)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.