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VIDEO / Evaluation / Agents

Evaluating Agent Tools

A practical test harness for tool selection, execution, and failure recovery.

EvaluationAgentsTesting
DURATION
12:21
PUBLISHED
Aug 20, 2026
CHAPTERS
4
TOPICS
Evaluation · Agents · Testing

VIDEO / CHAPTERS

Inside this explanation

  1. 00:00What a tool evaluation measures
  2. 02:48Scenario fixtures
  3. 06:32Failure injection
  4. 09:50Reading results
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01

The harness

Deterministic tool fakes make model decisions testable without calling real external systems.

  • Selection accuracy
  • Argument validity
  • Recovery behavior
02

Useful results

Failures are grouped by stage so a low score points toward prompt, orchestration, or tool contract changes.

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