How to integrate Chatwork MCP with Claude Code

Manage your Chatwork directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns. You can do this in two different ways: Via Composio Connect - Direct and easiest approach Via Composio SDK - Programmatic approach with more control

Chatwork logoChatwork
Api Key

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

Manage your Chatwork directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.

You can do this in two different ways:

  1. Via Composio Connect - Direct and easiest approach
  2. Via Composio SDK - Programmatic approach with more control

Also integrate Chatwork with

Why use Composio?

  • Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
  • Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Handling Large tool responses out of LLM context to minimize context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

Connecting Chatwork to Claude Code using Composio

1. Add the Composio MCP to Claude

Terminal

2. Start Claude Code

bash
claude

3. Open your MCP list

bash
/mcp

4. Select Composio and click on Authenticate

Select Composio and click Authenticate

5. This will redirect you to the Composio OAuth page. Complete the flow by authorizing Composio and you're all set.

Composio OAuth authorization page
Composio authorization complete
Ask Claude to connect to your account and authenticate via the link

What is the Chatwork MCP server, 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.

Connecting Chatwork via Composio SDK

Composio SDK is the underlying tech that powers Rube. It's a universal gateway that does everything Rube does but with much more programmatic control. You can programmatically generate an MCP URL with the app you need (here Chatwork) for even more tool search precision. It's secure and reliable.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step10 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Claude Pro, Max, or API billing enabled Anthropic account
  • Composio API Key
  • A Chatwork account
  • Basic knowledge of Python or TypeScript
2

Install Claude Code

bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

To install Claude Code, use one of the following methods based on your operating system:

3

Set up Claude Code

bash
cd your-project-folder
claude

Open a terminal, go to your project folder, and start Claude Code:

  • Claude Code will open in your terminal
  • Follow the prompts to sign in with your Anthropic account
  • Complete the authentication flow
  • Once authenticated, you can start using Claude Code
Claude Code initial setup showing sign-in prompt
Claude Code terminal after successful login
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here

Create a .env file in your project root with the following variables:

  • COMPOSIO_API_KEY authenticates with Composio (get it from Composio dashboard)
  • USER_ID identifies the user for session management (use any unique identifier)
5

Install Composio library

npm install @composio/core dotenv

Install the Composio TypeScript library to create MCP sessions.

  • @composio/core provides the core Composio functionality
  • dotenv loads environment variables from your .env file
6

Generate Composio MCP URL

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['chatwork'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http chatwork-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Create a script to generate a Composio MCP URL for Chatwork. This URL will be used to connect Claude Code to Chatwork.

What's happening

  • We import the Composio client and load environment variables
  • Create a Composio instance with your API key
  • Call create() to create a Tool Router session for Chatwork
  • The returned mcp.url is the MCP server URL that Claude Code will use
  • The script prints this URL so you can copy it
7

Run the script and copy the MCP URL

node --loader ts-node/esm generate_mcp_url.ts
# or if using tsx
tsx generate_mcp_url.ts

Run your TypeScript script to generate the MCP URL.

  • The script connects to Composio and creates a Tool Router session
  • It prints the MCP URL and the exact command you need to run
  • Copy the entire claude mcp add command from the output
8

Add Chatwork MCP to Claude Code

bash
claude mcp add --transport http chatwork-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude

In your terminal, add the MCP server using the command from the previous step. The command format is:

  • claude mcp add registers a new MCP server with Claude Code
  • --transport http specifies that this is an HTTP-based MCP server
  • The server name (chatwork-composio) is how you'll reference it
  • The URL points to your Composio Tool Router session
  • --headers includes your Composio API key for authentication

After running the command, close the current Claude Code session and start a new one for the changes to take effect.

9

Verify the installation

bash
claude mcp list

Check that your Chatwork MCP server is properly configured.

  • This command lists all MCP servers registered with Claude Code
  • You should see your chatwork-composio entry in the list
  • This confirms that Claude Code can now access Chatwork tools

If everything is wired up, you should see your chatwork-composio entry listed:

Claude Code MCP list showing the toolkit MCP server
10

Authenticate Chatwork

The first time you try to use Chatwork tools, you'll be prompted to authenticate.

  • Claude Code will detect that you need to authenticate with Chatwork
  • It will show you an authentication link
  • Open the link in your browser (or copy/paste it)
  • Complete the Chatwork authorization flow
  • Return to the terminal and start using Chatwork through Claude Code

Once authenticated, you can ask Claude Code to perform Chatwork operations in natural language. For example:

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

Complete Code

Here's the complete code to get you started with Chatwork and Claude Code:

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['chatwork'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http chatwork-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Conclusion

You've successfully integrated Chatwork with Claude Code using Composio's MCP server. Now you can interact with Chatwork directly from your terminal using natural language commands.

Key features of this setup:

  • Terminal-native experience without switching contexts
  • Natural language commands for Chatwork operations
  • Secure authentication through Composio's managed MCP
  • Tool Router for dynamic tool discovery and execution

Next steps:

  • Try asking Claude Code to perform various Chatwork operations
  • Add more toolkits to your Tool Router session for multi-app workflows
  • Integrate this setup into your development workflow for increased productivity

You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities.

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.

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 Code 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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