How to connect Castingwords to Claude Cowork

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 Castingwords account to Cowork via Composio Connect, enabling it to transcribe this podcast episode from its URL, check your available transcription balance now, order timestamps upgrade for file 12345, and more such actions on your behalf without compromising your account security.

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CastingWords is a transcription service specializing in human-powered, accurate transcripts via a simple API. Get seamless audio-to-text conversion for interviews, meetings, podcasts, and more.

9 Tools

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 Castingwords account to Cowork via Composio Connect, enabling it to transcribe this podcast episode from its URL, check your available transcription balance now, order timestamps upgrade for file 12345, and more such actions on your behalf without compromising your account security.

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Connecting Castingwords 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.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Cowork

4. Connect your Castingwords account

Back in Cowork, ask the agent to connect to Castingwords or give it any Castingwords-related task.

For example, ask Cowork to:

  • "Transcribe this podcast episode from its URL"
  • "Check your available transcription balance now"
  • "Order timestamps upgrade for file 12345"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Castingwords account is ready to use.

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 Castingwords through MCP without you sharing account credentials directly with the agent.

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

The Castingwords MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Castingwords account. It provides structured and secure access to transcription services, so your agent can place new orders, check account balances, manage webhooks, and upgrade or refund audio files on your behalf.

  • Seamless transcription ordering: Let your agent initiate new audio or video transcription jobs using just a media URL—no manual uploads needed.
  • Account balance and SKU checks: Effortlessly retrieve your prepay balance or list available transcription services and pricing before placing orders.
  • Webhook management and testing: Register, verify, and test webhooks to automatically receive transcript completion notifications in your own systems.
  • Transcription order management: Upgrade completed jobs (for example, to add timestamps), or cancel and refund audio files before work begins if needed.
TOOLS

Supported Tools

Every Castingwords action and event your agent gets out of the box.

Cancel and Refund Audio File

Tool to cancel an ordered audio file and issue a refund if applicable.

Get Prepay Balance

Tool to retrieve the current prepay balance for the account.

Get Transcript

Tool to retrieve the transcript for a given audiofile in the requested format (txt, doc, rtf, or html).

Get registered webhook URL

Tool to retrieve the currently registered webhook URL for account notifications.

Order Transcript

Create a transcription order for audio/video files at publicly accessible URLs.

Order Upgrades

Tool to order an upgrade for a specific audio file.

Register Webhook

Registers a webhook URL to receive CastingWords event notifications.

List Available SKUs

Retrieves all available CastingWords transcription service SKUs with pricing.

Test Webhook Call

Tool to request a test webhook call for a specific event type.

FAQ

Frequently asked questions

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

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 Castingwords tools.

Yes, absolutely. You can configure which Castingwords 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.

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 Castingwords data and credentials are handled as safely as possible.

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