Open WebUI adds native MCP tool routing, removing the need for middleware

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Open WebUI now supports Model Context Protocol (MCP) servers natively, letting users register endpoints in settings. The chat interface routes tool calls directly to those servers, so no LangChain middleware is needed. This matters for self-hosted setups like Ollama with Open WebUI, which previously needed a separate agent runner to use tools. Supported uses include local filesystem and git tools, database queries through SQL servers, and custom NAS or home automation integrations. The article cautions that MCP security is still immature, so server permissions should be handled like API keys, with audit logs and scoped credentials for production use.

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