# Fiddler LangGraph SDK

- [Introduction](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/langgraph.md): Complete API reference for fiddler-langgraph
- [Instrumentation](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/instrumentation.md)
- [add\_session\_attributes](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/instrumentation/add-session-attributes.md): Add a session-level attribute that appears on all spans in the current context.
- [add\_span\_attributes](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/instrumentation/add-span-attributes.md): Add custom span-level attributes to a specific LangChain component's metadata.
- [clear\_llm\_context](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/instrumentation/clear-llm-context.md): Remove LLM context from a language model instance.
- [LangGraphInstrumentor](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/instrumentation/lang-graph-instrumentor.md): An OpenTelemetry instrumentor for LangGraph applications.
- [set\_conversation\_id](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/instrumentation/set-conversation-id.md): Set the conversation ID for the current execution context.
- [set\_llm\_context](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/instrumentation/set-llm-context.md): Set or clear additional context information on a language model instance.
- [Re Exported From Otel](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel.md)
- [FiddlerChain](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/fiddler-chain.md): Wrapper for chain/workflow spans with semantic convention helpers.
- [FiddlerClient](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/fiddler-client.md): The main client for instrumenting Generative AI applications with Fiddler observability.
- [FiddlerGeneration](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/fiddler-generation.md): Wrapper for LLM generation spans with semantic convention helpers.
- [FiddlerSpan](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/fiddler-span.md): Wrapper around OpenTelemetry span with simplified helper methods.
- [FiddlerTool](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/fiddler-tool.md): Wrapper for tool/function call spans with semantic convention helpers.
- [get\_client](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/get-client.md): Return the global FiddlerClient singleton (first created in this process).
- [get\_current\_span](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/get-current-span.md): Get the currently active span as a Fiddler wrapper (inside a traced function).
- [trace](https://docs.fiddler.ai/api/fiddler-langgraph-sdk/re-exported-from-otel/trace.md): Decorator for automatic function tracing with input/output capture.


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