# How to connect Captions to Claude Cowork

```json
{
  "title": "How to connect Captions to Claude Cowork",
  "toolkit": "Captions",
  "toolkit_slug": "captions",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/captions/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/captions/framework/claude-cowork.md",
  "updated_at": "2026-08-14T06:02:02.551Z"
}
```

## Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.
This guide walks you through the easiest and most secure way to connect your Captions account to Cowork via Composio Connect, enabling it to generate narrated product demo video, add styled captions to your video, create voiceover for training clip, and more such actions on your behalf without compromising your account security.

## Also integrate Captions with

- [ChatGPT Work](https://composio.dev/toolkits/captions/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/captions/framework/hermes-agent)

## Connect Captions to Claude Cowork

### Connecting Captions to Claude Cowork
1. Open Customize
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
2. Add the Composio MCP server
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

## What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.
With Composio Connect, Cowork can securely access apps like Captions through MCP without you sharing account credentials directly with the agent.

## What is the Captions MCP server, and what's possible with it?

The Captions MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Captions account. It provides structured and secure access so your agent can perform Captions operations on your behalf.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `CAPTIONS_ADD_CAPTIONS` | Add Captions | Start an asynchronous job that transcribes and renders a selected caption style onto an uploaded or existing completed video. Use CAPTIONS_GET_VIDEO_STATUS to monitor the returned job, then CAPTIONS_DOWNLOAD_VIDEO when it completes. This call consumes paid Mirage credits and cannot be cancelled or deleted once submitted. |
| `CAPTIONS_DOWNLOAD_VIDEO` | Download Video | Download the MP4 content of a completed video job and return an offloaded file reference. Use CAPTIONS_GET_VIDEO_STATUS first to confirm the job is COMPLETE. |
| `CAPTIONS_GENERATE_SPEECH` | Generate Speech | Generate WAV speech synchronously from text using a known Mirage voice ID and return an offloaded audio file reference. This call consumes paid Mirage credits and cannot be cancelled or deleted once submitted. |
| `CAPTIONS_GENERATE_VIDEO` | Generate Video | Start an asynchronous Mirage Video 1 job that animates a portrait image using speech audio. Use the returned job ID with CAPTIONS_GET_VIDEO_STATUS. This call consumes paid Mirage credits and cannot be cancelled or deleted once submitted. |
| `CAPTIONS_GET_CAPTION_TEMPLATE` | Get Caption Template | Retrieve one caption style by ID, including its name and preview video URL. |
| `CAPTIONS_GET_VIDEO_STATUS` | Get Video Status | Retrieve the current state, progress, and error details for a video generation or captioning job. |
| `CAPTIONS_LIST_CAPTION_TEMPLATES` | List Caption Templates | Return one page of available caption styles, including names and preview video URLs. |
| `CAPTIONS_LIST_VIDEOS` | List Videos | Return one page of video jobs owned by the connected Mirage account, including each job's status and progress. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Captions MCP server connects Claude Cowork to your Captions account through Composio. Once connected, Cowork can use the available Captions tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Captions MCP Agent with another framework

- [ChatGPT Work](https://composio.dev/toolkits/captions/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/captions/framework/hermes-agent)

## Related Toolkits

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Captions MCP?

With a standalone Captions MCP server, the agents and LLMs can only access a fixed set of Captions tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Captions and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with Claude Cowork?

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Captions tools.

### Can I manage the permissions and scopes for Captions while using Tool Router?

Yes, absolutely. You can configure which Captions scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Captions data and credentials are handled as safely as possible.

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