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PyPI

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Overview

Complete API reference documentation for the fiddler-strands package, which instruments the Strands Agents SDK and exports OpenTelemetry traces to Fiddler. The package is published to PyPI as fiddler-strands and imported in Python as fiddler_strandsagents: 
pip install fiddler-strands

from fiddler_strandsagents import StrandsAgentInstrumentor

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Components

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Conversation And Session

Conversation and session attribute helpers. set_conversation_id / get_conversation_id set and read the conversation ID for the current execution context. set_session_attributes / get_session_attributes replace and read the session attribute dict for the current context.

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Instrumentation

StrandsAgentInstrumentor installs Fiddler tracing into the Strands Agents runtime. FiddlerInstrumentationHook is the Strands hook used internally by the instrumentor.

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Llm Context

set_llm_context attaches context (e.g. retrieved documents) to a Strands Model so it appears on its LLM spans. clear_llm_context removes previously set LLM context. get_llm_context reads the current LLM context for a model.

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Span Attributes

set_span_attributes and get_span_attributes set and read per-span custom attributes.

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Span Processor

StrandsSpanProcessor propagates parent attributes and patches Strands’ missing gen_ai.system.message event. FiddlerSpanProcessor is a backwards-compatible alias for StrandsSpanProcessor (same class object).