---
title: Behavior Evaluation
description: Test how an agent reacts — condition-triggered action patterns.
---

**Behavior evaluation** tests whether an agent correctly executes condition-triggered action patterns — the "habits" and "reflexes" that should fire in specific contexts.

## What it tests

- Does the agent recognize trigger conditions?
- Does it execute the correct action when triggered?
- Is the trigger-action pattern reliable across variations?
- Does priority ordering work when multiple behaviors could fire?

## Scorer: `behavior_trigger`

The `behavior_trigger` scorer evaluates whether the expected behavior was activated:

```go
testcase.ScorerConfig{
    Name: "behavior_trigger",
    Config: map[string]any{
        "trigger_type":   "on_input",
        "trigger_pattern": "security|vulnerability|CVE",
        "expected_action": "inject_prompt",
        "action_value":    "security-focused analysis",
    },
}
```

## Scenario: `behavior_trigger`

The `behavior_trigger` scenario generator creates test cases with specific trigger conditions:

```go
Case{
    ScenarioType: testcase.ScenarioBehaviorTrigger,
    Input:        "I found a potential SQL injection in the login form",
    Context: map[string]any{
        "behavior":       "security-alert",
        "trigger":        "on_input",
        "expected_action": "escalate and detail security implications",
    },
}
```

## Dimension score

```go
result.DimensionScores["behavior"] // 0.0 to 1.0
```

## Use cases

- Verify a code review agent activates security analysis when security keywords appear
- Test that a support agent escalates when detecting frustrated customers
- Ensure a data agent switches to careful mode when handling PII