The only SDK with fork-and-rerun Agent Replay. Start with a five-minute agent, then follow the loop into tracing, evaluation, and operations.
$ pip install fastaiagent from fastaiagent import Agent, LLMClient llm = LLMClient(provider="openai", model="gpt-4o") agent = Agent(name="my-agent", system_prompt="You are a helpful assistant.", llm=llm) result = agent.run("What is the capital of France?") print(result.output) print(result.trace_id) # every run is traced — use this ID for replay $ pip install 'fastaiagent[ui]' && fastaiagent ui # → http://127.0.0.1:7842