Evaluation Skill

Guidelines for creating comprehensive evaluation suites.

When to Use This Skill

Use this skill when:

• Creating a NEW evaluation suite for a feature
• Updating an EXISTING evaluation suite
• Understanding the evaluation framework patterns
• Writing spec.md, rubric.md, or evaluation files

Evaluation Framework Overview

All evaluations in evals/ follow a consistent structure with both code-based and LLM-as-judge validations.

spec.md Template

Use this template for all spec.md files:

# [Feature Name] Evaluation Specification

## Requirements
Format: `[IS-EVAL-IMPLEMENTED] IDENTIFIER: example case`
- G = matches ground truth
- C = implemented via code
- L = implemented via LLM as judge using rubric
- O = not yet implemented

### [Category Name 1]
- [G] REQ-EVAL-XX-001: Description of first code-based requirement
- [C] REQ-EVAL-XX-002: Description of second code-based requirement

### [Category Name 2]
- [L] REQ-EVAL-XX-003: Description of LLM-judged requirement
- [O] REQ-EVAL-XX-004: Description of LLM-judged requirement

Template Rules:

• Identifier Format: REQ-EVAL-XX-NNN
  • XX = 2-3 letter eval abbreviation (e.g., AG for action_generation, AS for action_scenarios)
  • NNN = Sequential 3-digit number starting at 001
• Implementation Types:
  • [G] = Ground truth validation (matches expected output)
  • [C] = Code-based validation (deterministic checks)
  • [L] = LLM-as-judge validation (quality assessment)
  • [O] = Not yet implemented (planned for future)
• Categories: Group related requirements logically

rubric.md Template

Use this template for all rubric.md files:

# [Feature Name] Reasoning Trace Rubric

## Format
`[PASS/FAIL] RUBRIC-ID: Criterion description`

## Based on: [Concrete example with specific values]

### [Category Name]
- [ ] RUB-XX-001: Specific, objective criterion
- [ ] RUB-XX-002: Another specific criterion

Template Rules:

• Identifier Format: RUB-XX-NNN (matches spec.md abbreviation)
• Categories: Organize criteria into logical groups
• Criteria: Write concrete, objectively verifiable rules, not subjective assessments
• Specificity: Reference actual values, fields, or behaviors that can be checked
• Checkboxes: Use - [ ] format for LLM judge to mark pass/fail
• Avoid subjective language: Do not use vague terms; state exactly what to verify