How to connect Openrouter to Claude Cowork

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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 Openrouter account to Cowork via Composio Connect, enabling it to generate Python code from this prompt, summarize this article using Claude-3, list all available Llama-3 model endpoints, and more such actions on your behalf without compromising your account security.

Also integrate Openrouter with

Connecting Openrouter 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 Openrouter account

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

For example, ask Cowork to:

  • "Generate Python code from this prompt"
  • "Summarize this article using Claude-3"
  • "List all available Llama-3 model endpoints"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Openrouter 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 Openrouter through MCP without you sharing account credentials directly with the agent.

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

The Openrouter MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Openrouter account. It provides structured and secure access to a wide range of large language models, so your agent can generate completions, manage model access, check credits, and retrieve generation details seamlessly on your behalf.

  • Unified model completions: Let your agent generate chat-based or text completions using any model available through Openrouter, perfect for conversation or content creation tasks.
  • Model catalog and provider discovery: Ask your agent to list all available AI models and providers, helping you compare capabilities, endpoints, and pricing in real time.
  • Credit monitoring and usage tracking: Have your agent fetch your current API credit balance, so you always know your usage limits before starting new tasks.
  • Generation result retrieval: Direct your agent to pull detailed metadata for any previous generation, including token counts, costs, and latency for analysis or auditing.
  • Endpoint and configuration info: Empower your agent to fetch the latest model endpoints and supported parameters, making it easy to fine-tune routing and optimize performance.

Supported Tools & Triggers

Tools
Create Chat CompletionTool to generate a chat-style completion.
Create CompletionTool to generate a text completion for a given prompt or set of messages.
Get CreditsTool to get the current api credit balance for the authenticated user.
Get GenerationTool to retrieve a generation result by its unique id.
List Available ModelsTool to list available models via openrouter api.
OpenRouter List Model EndpointsTool to list endpoints for a specific model.
OpenRouter List ProvidersTool to list all ai model providers available through the openrouter api.

Available tools and triggers

After setup, the supported Openrouter tools and triggers listed on this page are available to Cowork through Composio Connect.

You can now ask Cowork to handle Openrouter workflows in natural language, from quick summaries and drafting tasks to more complex multi-step work across connected apps.

How to build Openrouter MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Openrouter MCP?

With a standalone Openrouter MCP server, the agents and LLMs can only access a fixed set of Openrouter tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Openrouter 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 Openrouter tools.

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

Yes, absolutely. You can configure which Openrouter 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 Openrouter data and credentials are handled as safely as possible.

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Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.