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Three steps to your first LlamaIndex trace. For workflow steps, retrieval, the reaper, and options, see the full guide.

Install

Instrument

LlamaIndex’s agent API is async. Every scope works under async with as well as with.
Without one extra argument on your LLM, every token count in your trace is null — llama-index-llms-openai does not request usage when it streams. See Token counts.

Check it arrived

Run it once, then open Observe → Sessions and select your environment. Your run appears as a reconstructed trace. If nothing arrives, confirm the machine is connected with failproofai config --status.

Full LlamaIndex guide

Token counts, what gets recorded, workflow steps, retrieval, options, and common problems.