I built PolyMCP, an open-source framework that lets any Python function become an MCP tool usable by AI agents — no rewrites, decorators, or custom SDKs needed.

Features: • Expose Python functions as MCP tools (core framework) • PolyMCP Inspector: visual UI to browse, test, and debug servers • MCP SDK Apps: build full AI-powered apps with tools + UI resources

Real use cases: • Turn existing APIs into AI-callable tools • Automate internal workflows without rewriting legacy code • Build dashboards, copilots, or support tools

Supports LLMs like OpenAI, Anthropic, and Ollama (including local models).

Repo: https://github.com/poly-mcp/PolyMCP Inspector: https://github.com/poly-mcp/PolyMCP-Inspector SDK Apps: https://github.com/poly-mcp/PolyMCP-MCP-SDK-Apps

Feedback welcome from anyone building AI agents or internal tools!