# Caption a video from an MCP client in three tool calls (no sign-up)

> Source: <https://dev.to/awesomevideo/caption-a-video-from-an-mcp-client-in-three-tool-calls-no-sign-up-62e>
> Published: 2026-11-06 14:15:16+00:00

I'm the maker of [AwesomeVideo](https://awesomevideoeditor.com) — a hosted captions MCP + REST API that returns a burned-in MP4 plus SRT/VTT.

If your agent can call tools, you can caption a sample clip without creating an account first. Point the client at the keyless endpoint and use three tools.

Remote MCP URL:

`https://api.awesomevideoeditor.com/mcp`

Docs / Cursor / Claude recipes: [awesomevideoeditor.com/mcp](https://awesomevideoeditor.com/mcp)

Many clients that only speak JSON on `initialize` / `tools/list` work against this endpoint (Streamable HTTP + content negotiation).

Call `create_key` (or use the anonymous REST path). You get welcome credits once per network — enough to try a short clip. No email wall for the agent path.

Call `caption_video` with a public MP4 URL. Live sample we keep online:

`https://awesomevideoeditor.com/samples/cc0-interview-es.mp4`

You get back job status, then downloadable MP4 (styled burn-in) + SRT/VTT/JSON transcript. Pricing is live at `/v1/pricing` (currently 5 credits per audio minute for captions; +2 with translate).

If you automate in n8n instead of an agent, there is an importable workflow (core nodes only, no key baked in):

Most caption SaaS is UI-first. Agents need: a tool list, a key they can mint, and a real video URL that is not `example.com`. Happy to answer MCP / OAuth / billing questions in the comments — I'm the maker.