# Hugging Face — Trace & Evaluate your Agent with Arize Phoenix

- Company: Hugging Face (huggingface.co)
- Announced: 2025-02-28T00:00:00+00:00
- Subject: Platform
- Source: https://huggingface.co/blog/smolagents-phoenix
- Record: https://forck.live/items/1738-trace-evaluate-your-agent-with-arize-phoenix

This post provides a step-by-step guide on tracing and evaluating agents built with smolagents using Arize Phoenix. It covers setting up tracing with OpenTelemetry and OpenInference, and evaluating tool performance using an LLM-as-a-judge approach with GPT-4o.

## Evidence

Verbatim from https://huggingface.co/blog/smolagents-phoenix:

> Arize Phoenix provides a centralized platform to trace, evaluate, and debug your agent's decisions in real time—all in one place.

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Record: https://forck.live/items/1738-trace-evaluate-your-agent-with-arize-phoenix
Catalogue: https://forck.live/llms.txt
Feed: https://forck.live/feed.md