FastAPI LangGraph Agent Template offers a comprehensive foundation for developing LLM-driven agents within a FastAPI application. It includes predefined LangGraph nodes for common tasks like text completion, embedding, and vector similarity search while allowing developers to create custom nodes and pipelines. The template manages conversation history via memory modules that persist context across sessions and supports environment-based configuration for different deployment stages. Built-in Docker files and CI/CD-friendly structure ensure seamless containerization and deployment. Logging and error-handling middleware enhance observability, while the modular codebase simplifies extending functionality. By combining FastAPI's high-performance web framework with LangGraph's orchestration capabilities, this template streamlines the agent development lifecycle from prototyping to production.

CopilotKit is an open-source Python framework designed for developers to build customized AI agents. It offers a modular architecture where you can register and configure tools — such as file system access, web search, Python REPL, and SQL connectors — then wire them into agents that leverage any supported LLM. Built-in memory modules allow conversation state persistence, while LangGraph lets you define structured reasoning flows for complex tasks. Agents can be deployed in scripts, web services, or CLI apps and scale across cloud providers. CopilotKit works seamlessly with OpenAI, Azure OpenAI, and Anthropic models, empowering automated workflows, chatbots, and data analysis bots.