Lagent is a developer-focused framework that enables creation of intelligent agents on top of large language models. It offers dynamic planning modules that break tasks into subgoals, memory stores to maintain context over long sessions, and tool integration interfaces for API calls or external service access. With customizable pipelines, users define agent behaviors, prompting strategies, error handling, and output parsing. Lagent’s logging and debugging tools help monitor decision steps, while its scalable architecture supports local, cloud, or enterprise deployments. It accelerates building autonomous assistants, data analysers, and workflow automations.

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.

FAgent offers a modular architecture for constructing AI agents, including environment abstractions, policy interfaces, and tool connectors. It supports integration with popular LLM services, implements memory management for context retention, and provides an observability layer for logging and monitoring agent actions. Developers can define custom tools and actions, orchestrate multi-step workflows, and run simulation-based evaluations. FAgent also includes plugins for data collection, performance metrics, and automated testing, making it suitable for research, prototyping, and production deployments of autonomous agents in various domains.