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How to connect Chatwork to Claude

Connect Claude Web, Desktop and Cowork to Chatwork MCP. List all unread messages across rooms, upload meeting notes file to project room, and more using natural language, with authentication handled for you.

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Chatwork is a team communication platform with group chats, file sharing, and task management. It helps businesses boost collaboration and streamline productivity.

30 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Chatwork account to Claude via Composio Connect, enabling it to list all unread messages across rooms, upload meeting notes file to project room, get all members of marketing chat, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Chatwork with

Claude CodeOpenAI Agents SDKClaude Agent SDKCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Chatwork to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

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

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

2. 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 Web, Desktop, and Cowork

3. Connect your Chatwork account

Back in Claude, ask it to connect to Chatwork or give it any Chatwork-related task.

For example, ask Claude to:

  • "List all unread messages across rooms"
  • "Upload meeting notes file to project room"
  • "Get all members of marketing chat"

It will prompt you to authenticate and authorize access.

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

What is the Chatwork Claude Connector, and what's possible with it?

The Chatwork MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Chatwork account. It provides structured and secure access to your chats, contacts, files, and rooms, so your agent can perform actions like sending messages, managing tasks, retrieving files, and organizing team communications on your behalf.

  • Room and member management: Easily fetch all chat rooms, list members in any room, and keep your workspace organized by letting your agent handle the heavy lifting.
  • Smart message retrieval and deletion: Have your agent pull recent messages from any chat, search for important info, or even delete specific messages when needed.
  • File sharing and retrieval: Seamlessly upload files to any Chatwork room or retrieve details and download links for files already shared, making document collaboration a breeze.
  • Contact and status insights: Instantly get a list of all your Chatwork contacts or check your current unread messages and task status without switching tabs.
  • Automated task and notification workflows: Let your agent monitor unread messages, mentions, and tasks, helping you stay on top of communication and never miss an important update.

Troubleshooting

1. Why does Claude not use the Composio connector for Chatwork?

The connector can show as connected, but Claude must use it in each Chatwork conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Chatwork again.

2. Why does Claude show an MCP server error before Chatwork connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Chatwork.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Chatwork.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Chatwork authorization link not work?

The Composio connector is one server. Your Chatwork account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Chatwork connection.
  • Composio creates a fresh Chatwork authorization link.
  • Open that link in your browser and finish the Chatwork sign-in.

4. Why do Chatwork actions fail after they worked before?

The Chatwork connection can expire or lose permission.

  • Ask Claude to inspect the Chatwork connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Chatwork account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Chatwork.
  • If the action still fails with a permission error, check that the connected account has that permission in Chatwork itself.

5. How do I switch to a different Chatwork account?

Claude can manage the Chatwork connection for you.

  • Ask Claude to disconnect or delete the current Chatwork account.
  • Ask Claude to connect Chatwork again.
  • Open the new Composio authorization link for Chatwork.
  • Sign in with the other Chatwork account in the browser.
  • After the account connects, ask Claude to retry the Chatwork task.

6. Why is my Chatwork connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Chatwork connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Chatwork tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Chatwork.
TOOLS

Supported Tools

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

Create Chatwork Room

Tool to create a new group chat room in Chatwork.

Create Room Invitation Link

Tool to create an invitation link for a Chatwork room.

Create Task in Chatwork Room

Tool to create a new task in a Chatwork room.

Delete Message

This tool allows you to delete a specific message from a Chatwork room by calling the DELETE endpoint at https://api.

Delete or Leave Chatwork Room

Tool to leave or delete a Chatwork room.

Delete Room Link

Delete the invitation link for a Chatwork room.

Get Chatwork Contacts

This tool retrieves a list of all contacts from Chatwork.

Get Chatwork File Information

Tool to get information about a specific file in a chat room.

Get Incoming Contact Requests

Tool to retrieve pending contact approval requests received by the authenticated user.

Get My Chatwork Profile

Tool to retrieve the authenticated user's profile information including account details, organization, contact information, and avatar URL.

Get Message

Tool to retrieve information about a specific message in a Chatwork room.

Get My Chatwork Status

This tool retrieves the current status of the authenticated user, including unread message counts and task status.

Get My Chatwork Tasks

Tool to retrieve the authenticated user's task list from Chatwork (up to 100 items).

Get Chatwork Room

Retrieves detailed information about a specific Chatwork room using the API endpoint GET /rooms/{room_id}.

Get Room Files

Tool to get list of files in a chat room (up to 100 files).

Get Room Invitation Link

Retrieves the invitation link for a specified Chatwork room using the API endpoint GET /rooms/{room_id}/link.

Get Room Members

Retrieves a complete list of all members in a specified Chatwork room using the API endpoint GET /rooms/{room_id}/members.

Get Room Messages V2

Tool to retrieve messages from a Chatwork room (up to 100 messages).

Get Chatwork Rooms

Tool to retrieve a list of all chat rooms the authenticated user belongs to.

Get Room Tasks

Retrieves a list of tasks from a Chatwork room.

Get Task

Retrieves detailed information about a specific task in a Chatwork room using the API endpoint GET /rooms/{room_id}/tasks/{task_id}.

Mark Messages as Read

Tool to mark messages as read in a Chatwork room.

Mark Messages as Unread

Tool to mark messages as unread in a Chatwork room.

Post Message

Tool to post a new message to a Chatwork room.

Update Message

Tool to update an existing message in a Chatwork room.

Update Chatwork Room

Tool to update chat room information (name, icon, description).

Update Room Invitation Link

Tool to update the invitation link settings for a Chatwork room.

Update Room Members

Updates the complete member list of a Chatwork room with bulk assignment of member roles (admin, member, readonly).

Update Task Status

Tool to update the completion status of a task in a Chatwork room.

Upload File to Chatwork Room

This tool allows users to upload files to a specific Chatwork room.

FRAMEWORKS

How to build Chatwork MCP Agent with another framework

Claude Code logo

Claude Code

Use Chatwork MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Chatwork MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Chatwork MCP with Claude Agent SDK

Codex logo

Codex

Use Chatwork MCP with Codex

OpenClaw logo

OpenClaw

Use Chatwork MCP with OpenClaw

Hermes logo

Hermes

Use Chatwork MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Chatwork MCP with Atomic Agent

Google ADK logo

Google ADK

Use Chatwork MCP with Google ADK

LangChain logo

LangChain

Use Chatwork MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Chatwork MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Chatwork MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Chatwork MCP with LlamaIndex

CrewAI logo

CrewAI

Use Chatwork MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Chatwork MCP with Pydantic AI

AutoGen logo

AutoGen

Use Chatwork MCP with AutoGen

FAQ

Frequently asked questions

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

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

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