repointermediate
Show HN: WhatsApp MCP Server
By lharrieshackernews
View original on hackernewsAn open-source, self-hosted Model Context Protocol (MCP) server for WhatsApp that connects to personal WhatsApp accounts via the WhatsApp Web multi-device API without relying on third-party services. It enables LLMs to search messages, contacts, and groups while storing all data locally in SQLite, giving users full control and privacy over their WhatsApp context.
Key Points
- •Build a self-hosted MCP server that connects Claude or other LLMs directly to WhatsApp without relying on third-party APIs
- •Use WhatsApp Web multi-device API (whatsmeow library) to authenticate and maintain connection to personal WhatsApp account
- •Store all message data locally in SQLite database for complete privacy control—nothing goes to cloud unless explicitly authorized
- •Enable LLM to search messages, contacts, and groups to provide rich contextual understanding of user's communication history
- •Allow AI agents to execute tasks autonomously by sending WhatsApp messages to individuals or groups on user's behalf
- •Leverage the fact that 99% of personal life context exists in WhatsApp conversations to enhance AI agent capabilities
- •Implement tool-based access control so users explicitly grant LLM permission to access WhatsApp data
- •Deploy as open-source, self-hosted solution to maintain security and avoid vendor lock-in
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Workflow Diagram
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