Just Captions MCP MCP server

An official MCP server that enables AI agents to transcribe audio, correct transcripts, translate captions, and apply 15 animated video caption styles. It integrates with local video rendering tools to export MP4 files and subtitles, supporting batch processing and offline recognition.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Just Captions

MCP endpoint (Streamable HTTP)

https://api.justcaptions.com/mcp

Vendor documentation

What you can do with it

Transcribe extracted audio from video clips
AI-correct transcript errors and translate text
Apply 15 animated caption styles like Neon or Typewriter
Export finished MP4 videos with synchronized subtitles

Tools advertised by the last live check:

list_styles
get_pricing
get_usage
estimate_cost
transcribe_audio
correct_captions
translate_captions
pick_emojis

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http just-captions-mcp https://api.justcaptions.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add just-captions-mcp --url https://api.justcaptions.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable just-captions-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "just-captions-mcp": {
      "url": "https://api.justcaptions.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "just-captions-mcp": {
      "type": "streamableHttp",
      "url": "https://api.justcaptions.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start just-captions-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "just-captions-mcp": {
      "type": "http",
      "url": "https://api.justcaptions.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http just-captions-mcp https://api.justcaptions.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "just-captions-mcp": {
      "url": "https://api.justcaptions.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "just-captions-mcp": {
      "serverUrl": "https://api.justcaptions.com/mcp"
    }
  }
}

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