Documentation Index
Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-usestr-1765228917-dac0d1a.mintlify.app/llms.txt
Use this file to discover all available pages before exploring further.
Documentation
LangChain is the platform for agent engineering. AI teams at Replit, Clay, Rippling, Cloudflare, Workday, and more trust LangChain’s products to engineer reliable agents.Open source agent frameworks
- Python
- TypeScript
LangChain (Python)
Quickly get started building agents, with any model provider of your choice.
LangGraph (Python)
Control every step of your custom agent with low-level orchestration, memory, and human-in-the-loop support.
Deep Agents (Python)
Build agents that can tackle complex, multi-step tasks.
LangSmith
LangSmith is a platform that helps AI teams use live production data for continuous testing and improvement. LangSmith provides:Observability
See exactly how your agent thinks and acts with detailed tracing and aggregate trend metrics.
Evaluation
Test and score agent behavior on production data or offline datasets to continuously improve performance.
Prompt Engineering
Iterate on prompts with version control, prompt optimization, and collaboration features.
Deployment
Ship your agent in one click, using scalable infrastructure built for long-running tasks.
Agent Builder (Beta)
Turn natural-language ideas into production agents with persistent memory and self-updating capabilities.
LangSmith meets the highest standards of data security and privacy with HIPAA, SOC 2 Type 2, and GDPR compliance. For more information, see the Trust Center.
Get started
Build your first agent with LangChain
Sign up for LangSmith
Build an advanced agent with LangGraph
Enroll in LangChain Academy
Additional resources
Community forum
Ask questions, share solutions, and discuss best practices.
Community Slack
Connect with other builders and get quick help.
Support portal
Submit tickets and track support requests.
LangSmith status
Real-time status of LangSmith services and APIs.