Skills

Eval Harness

Evaluation harness for testing agent and skill quality through structured benchmarks...

Install

npx skills add a5c-ai/babysitter --skill eval-harness -g -a claude-code -y
Repository
a5c-ai/babysitter1.9k
Category
Testing
Updated
3d ago
License
MIT
Context cost
Lightabout 420 tokens
Runs scripts
No, instructions only

What it does

Evaluation harness for testing agent and skill quality through structured benchmarks, regression tests, and quality scoring.

  • Define test cases with known-correct outputs
  • Run agent against each test case
  • Score: accuracy, completeness, relevance
  • Compare against baseline performance
  • Track performance over time

2. Skill Quality Testing

  • Verify skill instructions produce expected outcomes
  • Test edge cases and boundary conditions
  • Measure consistency across multiple runs
  • Check for harmful or incorrect outputs
  • Validate against ground truth

3. Regression Suite

  • Collection of previously-passing test cases
  • Run after any agent/skill modification
  • Flag regressions with before/after comparison
  • Maintain pass rate threshold (>= 95%)

4. Process Verification

  • End-to-end process execution with known inputs
  • Verify each phase produces expected outputs
  • Check task ordering and dependency satisfaction
  • Measure total execution time

Quality Scoring

Accuracy Score (0-100)

  • Correctness of output vs expected
  • Partial credit for partially correct outputs
  • Penalty for hallucinated or fabricated content

Completeness Score (0-100)

  • Coverage of required output elements
  • Missing sections flagged and scored
  • Bonus for useful additional context

Consistency Score (0-100)

  • Run same input 3 times
  • Compare outputs for semantic similarity
  • Flag inconsistencies

Composite Score

  • (accuracy * 0.4 + completeness * 0.3 + consistency * 0.3)
  • Threshold: 80 to pass

When to Use

  • After creating new agents or skills
  • After modifying existing agents or skills
  • Periodic quality audits
  • Before promoting skills to production

Agents Used

  • Used by process-level evaluation orchestrators
  • No specific agent dependency (evaluates other agents)

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