Tracing Configuration
LangSmith tracing settings for observability and debugging.
| Variable | Default | Sensitive | Description |
|---|---|---|---|
LANGSMITH_TRACING | false | No | Enable LangSmith tracing. |
LANGSMITH_API_KEY | (empty) | Yes | LangSmith API key. |
LANGSMITH_PROJECT | lamb-agent | No | LangSmith project name. |
LANGSMITH_API_URL | https://api.smith.langchain.com | No | LangSmith API endpoint. |
LANGSMITH_SAMPLE_RATE | 1.0 | No | Tracing sample rate (0.0 to 1.0). |
Example
bash
LANGSMITH_TRACING=true
LANGSMITH_API_KEY=lsv2_pt_xxxxxxxxxxxxx
LANGSMITH_PROJECT=lambchat-prod
LANGSMITH_SAMPLE_RATE=1.0TIP
- Set
LANGSMITH_SAMPLE_RATEto0.1in production to trace only 10% of requests - Use
LANGSMITH_PROJECTto organize traces by environment (e.g.,lambchat-dev,lambchat-prod) - Access your traces at smith.langchain.com