Skip to main content

Documentation Index

Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-cbclea-1779438149-9d7c578.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

The LangSmith REST API provides programmatic access to LangSmith platform features including tracing, datasets, experiments, annotations, and more. Browse the full API reference in the LangSmith API section in the sidebar.

​
Authentication

Pass the X-Api-Key header with each request. The value should be a valid LangSmith API key. 
curl --request GET \
  --url https://api.smith.langchain.com/api/v1/workspaces/current \
  --header 'X-Api-Key: LANGSMITH_API_KEY'
Connect these docs to Claude, VSCode, and more via MCP for real-time answers.
Edit this page on GitHub or file an issue.