Best Open Source function calling Libraries

A curated list of the most popular GitHub repositories tagged with function calling. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1ComposioHQ/composio

Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.

27,095TypeScript

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#2sigoden/aichat

All-in-one LLM CLI tool featuring Shell Assistant, Chat-REPL, RAG, AI Tools & Agents, with access to OpenAI, Claude, Gemini, Ollama, Groq, and more.

9,345Rust

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