> For the complete documentation index, see [llms.txt](https://docs.layerlens.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.layerlens.ai/7.-observe-see-whats-happening/agent-evaluation.md).

# Agent Evaluation

The Stratix Premium Agent Evaluation surface — Traces, Judges, and Trace Evaluations.

{% hint style="info" %}
**Available in Stratix Premium.** This surface is part of the logged-in workspace at [stratix.layerlens.ai](https://stratix.layerlens.ai). Stratix Public users can browse the catalog but cannot use this feature.
{% endhint %}

The Agent Evaluation section in the Premium left rail bundles three surfaces:

* **Traces** — upload, browse, and inspect agent traces
* **Judges** — build and manage LLM-as-a-judge graders
* **Trace evaluations** — score traces with scorers and judges

These three surfaces compose the full agentic-evaluation workflow.

## What's an agent trace

A trace is a record of an AI call (or chain of calls): inputs, outputs, every tool call, every span, latencies, costs, errors. Stratix's trace pipeline ingests trace JSON and stores it for inspection and evaluation.

## The three surfaces

### Traces

Inspect individual traces. See [Traces](/7.-observe-see-whats-happening/traces.md).

### Judges

Build LLM judges for subjective dimensions. See [Judges](/8.-evaluate-score-the-outputs/judges.md).

### Trace evaluations

Run a scoring config (scorers + judges) over a trace set. See [Trace evaluations](/8.-evaluate-score-the-outputs/trace-evaluations.md).

## How they combine for agentic evaluation

A complete agentic evaluation:

1. **Capture trace set** — upload representative traces (or stream them from your application)
2. **Define criteria** — natural-language assertions, deterministic rules, LLM judges
3. **Run trace evaluation** — Stratix grades every trace against every criterion
4. **Read verdict + root-cause** — failure tied back to the trace, span, and decision

## Where to next

* [Traces](/7.-observe-see-whats-happening/traces.md)
* [Judges](/8.-evaluate-score-the-outputs/judges.md)
* [Trace evaluations](/8.-evaluate-score-the-outputs/trace-evaluations.md)
* [Overview: Agentic evaluations](/4.1-general-use-cases/agentic-evals-overview.md)
* [Concept: Agentic evaluation](/8.-evaluate-score-the-outputs/agentic-evaluation.md)