How to connect Writer 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 Writer account to Cowork via Composio Connect, enabling it to summarize key findings from uploaded medical notes, generate chat responses using enterprise LLM, list all knowledge graphs in your workspace, and more such actions on your behalf without compromising your account security.

Also integrate Writer with

Connecting Writer 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 Writer account

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

For example, ask Cowork to:

  • "Summarize key findings from uploaded medical notes"
  • "Generate chat responses using enterprise LLM"
  • "List all knowledge graphs in your workspace"

It will prompt you to authenticate and authorize access.

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

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

The Writer MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Writer account. It provides structured and secure access to your Writer AI platform, so your agent can perform actions like querying knowledge graphs, generating chat completions, extracting medical concepts, managing files, and orchestrating enterprise AI workflows on your behalf.

  • Conversational AI and content generation: Use your agent to generate chat-based completions and natural language responses using Writer's advanced LLMs.
  • Enterprise knowledge graph management: Create, retrieve, list, or delete knowledge graphs to organize and access structured knowledge within your organization.
  • Automated data extraction from clinical text: Extract medical entities and standardized codes (like SNOMED CT) from unstructured clinical or healthcare text for downstream analysis.
  • Application and model discovery: List available no-code agent applications and LLM models to streamline how your agent selects tools for specific tasks.
  • File management and inspection: Retrieve and review uploaded files, filter by attributes, and manage your enterprise content for further AI-driven actions.

Supported Tools & Triggers

Tools
Ask Question to Knowledge GraphTool to send a question to the knowledge graph and retrieve the answer.
Chat CompletionTool to generate chat-based completions.
Create Knowledge GraphTool to create a new knowledge graph.
Delete GraphTool to delete a knowledge graph by its id.
List ApplicationsTool to list all no-code agent applications.
List FilesTool to list all uploaded files.
List Knowledge GraphsTool to retrieve a list of knowledge graphs.
List ModelsTool to list all available language models.
Medical Text ComprehensionTool to extract medical entities and concepts from unstructured clinical text.
Retrieve Knowledge GraphTool to retrieve a knowledge graph by its id.
Text GenerationTool to generate text based on a given prompt.
Update Knowledge GraphTool to update an existing knowledge graph.
Web SearchTool to perform a web search.

How to build Writer MCP Agent with another framework

FAQ

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

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

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

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

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