Chatwork MCP Server
Official Chatwork MCP server from Chatwork enabling AI agents to interact with Chatwork — Japan's most widely used business communication platform. Enables agents to send messages, read room conversations, manage contacts, create group rooms, access message history, and integrate Chatwork messaging into agent-driven communication workflows.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
HTTPS. API token. Business messages are sensitive. JP data residency. ISO27001. Official Chatwork MCP.
⚡ Reliability
Best When
A Japanese business team using Chatwork for internal communication wants AI agents to automate messaging workflows, notifications, and conversation management — official MCP from Chatwork.
Avoid When
Your organization uses Slack or Microsoft Teams — those have their own MCPs. Chatwork is primarily used by Japanese companies.
Use Cases
- • Sending notifications and updates to Chatwork rooms from automation agents
- • Reading and summarizing Chatwork conversations from productivity agents
- • Managing Chatwork rooms and member assignments from administration agents
- • Integrating Chatwork messaging into business workflow automation agents
Not For
- • Teams using Slack, Teams, or other messaging platforms (Chatwork-specific)
- • Consumer messaging (Chatwork is business-only)
- • Organizations outside Japan (Chatwork is dominant in Japanese market)
Interface
Authentication
Chatwork API token required. Get from Chatwork account settings → API. Set CHATWORK_API_TOKEN environment variable.
Pricing
Chatwork account required. MCP server is free open source from official Chatwork engineering team. API access included with Chatwork account.
Agent Metadata
Known Gotchas
- ⚠ Rate limit of 100 req/5min can constrain busy agent loops — implement backoff
- ⚠ Chatwork messages are Japanese-market focused — documentation and support primarily in Japanese
- ⚠ Messages sent by agents are attributed to the API token owner — label automated messages
- ⚠ Official from Chatwork engineering team — high quality and maintained
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Chatwork MCP Server.
Scores are editorial opinions as of 2026-03-06.