# Steps 3–5 — Download Results, Cluster Failures, Dive Into Category

## Step 3 — Download Results

`evaluation_get` returns run metadata but **not** full per-row output. Write a Python script (save to `scripts/`) to download detailed results using the **Azure AI Projects Python SDK**.

### Prerequisites

```text
pip install azure-ai-projects>=2.0.0 azure-identity
```

### SDK Client Setup

```python
from azure.identity import DefaultAzureCredential
from azure.ai.projects import AIProjectClient

project_client = AIProjectClient(
    endpoint=project_endpoint,       # e.g. "https://<hub>.services.ai.azure.com/api/projects/<project>"
    credential=DefaultAzureCredential(),
)
# The evals API lives on the OpenAI sub-client, not on AIProjectClient directly
client = project_client.get_openai_client()
```

> ⚠️ **Common mistake:** Calling `project_client.evals` directly — the `evals` namespace is on the OpenAI client returned by `get_openai_client()`, not on `AIProjectClient` itself.

### Retrieve Run Status

```python
run = client.evals.runs.retrieve(run_id=run_id, eval_id=eval_id)
print(f"Status: {run.status}  Report: {run.report_url}")
```

### Download Per-Row Output Items

The SDK handles pagination automatically — no manual `has_more` / `after` loop required.

```python
output_items = list(client.evals.runs.output_items.list(run_id=run_id, eval_id=eval_id))
all_items = [item.model_dump() for item in output_items]
```

> 💡 **Tip:** Use `model_dump()` to convert each SDK object to a plain dict for JSON serialization.

### Data Structure

Query/response data lives in `datasource_item.query` and `datasource_item['sample.output_text']`, **not** in `sample.input`/`sample.output` (which are empty arrays). Parse `datasource_item` fields when extracting queries and responses for analysis.

> ⚠️ **LLM judge knowledge cutoff:** When evaluating agents that use real-time data sources (web search, Bing Grounding, live APIs), the LLM judge may flag factually correct but temporally recent responses as "fabricated" or "unverifiable" because the judge's training data predates the agent's live results. Check failure reasons for phrases like "cannot verify," "beyond knowledge cutoff," or "no evidence" before treating them as real failures. See Behavioral Rule 18 in `observe.md` for mitigations.

### Custom Evaluator Dual-Entry Parsing

Custom evaluators produce **two** result entries per item in the `results` array:

| Entry | `metric` field | Has score? | Has reason/label/passed? |
|-------|----------------|------------|--------------------------|
| Entry 1 | `"custom_score"` | ✅ numeric score | ❌ null |
| Entry 2 | `"{evaluator_name}"` | ❌ null | ✅ real reason, label, passed |

To get the complete picture, merge both entries:

```python
def extract_evaluator_result(item, evaluator_name):
    """Merge the dual entries for a custom evaluator into one result."""
    score_entry = None
    detail_entry = None
    for r in item.get("results", []):
        metric = r.get("metric", "")
        if metric == "custom_score":
            score_entry = r
        elif metric == evaluator_name:
            detail_entry = r
    if not detail_entry:
        return None
    return {
        "score": score_entry.get("score") if score_entry else None,
        "passed": detail_entry.get("passed"),
        "reason": detail_entry.get("reason"),
        "label": detail_entry.get("label"),
    }
```

> ⚠️ **Common mistake:** Reading only the first matching result entry for a custom evaluator gives you the score but null reason (or vice versa). Always merge both entries. Built-in evaluators do **not** have this dual-entry pattern - they produce a single entry with all fields populated.

**Evidence from actual eval run** (item 1, `behavioral_adherence`):

```jsonc
// Entry 1: has score, null reason
{"name": "behavioral_adherence", "metric": "custom_score", "score": 1, "reason": null, "passed": null}

// Entry 2: has reason, null score
{"name": "behavioral_adherence", "metric": "behavioral_adherence", "score": null,
 "reason": "The response provides outdated and fabricated information...", "passed": false}
```

### Persist Results

Save results to `.foundry/results/<environment>/<eval-id>/<run-id>.json` (use `json.dump` with `default=str` for non-serializable fields). Print summary: total items, passed, failed, errored counts.

> ⚠️ **Show Data Viewer deeplinks (for VS Code runtime only):** Append a Data Viewer deeplink immediately after reference to an evaluation result file in your response. Format: "[Open in Data Viewer](vscode://ms-windows-ai-studio.windows-ai-studio/open_data_viewer?file=<file_path>&source=microsoft-foundry-skill) for details and perform analysis".

## Step 4 — Cluster Failures by Root Cause

Analyze every row in the results. Group failures into clusters:

| Cluster | Description |
|---------|-------------|
| Incorrect / hallucinated answer | Agent gave a wrong or fabricated response |
| Incomplete answer | Agent missed key parts |
| Tool call failure | Agent failed to invoke or misused a tool |
| Safety / content violation | Flagged by safety evaluators |
| Runtime error | Agent crashed or returned an error |
| Off-topic / refusal | Agent refused or went off-topic |

Produce a prioritized action table:

| Focus | Cluster | Suggested Action |
|-------|---------|------------------|
| Runtime blockers | Runtime errors or failing suites tagged `tier=smoke` | Check container logs or fix blockers first |
| Key regressions | Incorrect answers on suites tagged `purpose=regression` or `tier=smoke` | Optimize prompt or tool instructions |
| Broader quality gaps | Incomplete answers or coverage-oriented suites | Optimize prompt or expand context |
| Tooling issues | Tool call failures | Fix tool definitions or instructions |
| Safety issues | Safety violations | Add guardrails to instructions |

**Rule:** Prioritize runtime errors first, then suites tagged `tier=smoke`, then suites tagged `purpose=regression`, then broader coverage suites by count × severity.

## Step 5 — Dive Into Category

When the user wants to inspect a specific cluster, display the individual rows: evaluation-suite ID, input query, the agent's original response, evaluator scores, and failure reason. Let the user confirm which category or evaluation suite to optimize.

## Next Steps

After clustering -> proceed to [Step 6: Optimize Prompt](optimize-deploy.md).
