Conciseness

The body is lean and dominated by executable YAML and CLI examples; only minor padding remains (the 'runs on vibes — this tool systematizes it' editorializing and a 'When to Activate' section that duplicates the description).

Actionability

Concrete, runnable commands ('agent-eval run --task tasks/add-retry-logic.yaml --agent claude-code --agent aider --runs 3', 'agent-eval report --format table') plus complete task and judge YAML examples cover the common cases, but the Installation section contains only a note with no actual install command, leaving the tool not runnable from the skill alone.

Workflow Clarity

A clear three-step sequence (Define Tasks → Run Agents → Compare Results) with per-run sub-steps, and judge criteria act as validation checkpoints on every run; it falls short of 5 only because there is no error-recovery guidance for failed runs or conflicting judge results.

Progressive Disclosure

With no bundle files present, the ~140-line body is well organized into appropriately sized sections (Core Concepts, Workflow, Judge Types, Best Practices) with no buried references; it is above the under-50-line simple-skill case, and some material (judge-type YAML schemas) could still be split into reference files.

Specificity

The description names concrete elements — 'Head-to-head comparison of coding agents', '(Claude Code, Aider, Codex, etc.)', and four specific metrics 'pass rate, cost, time, and consistency' — but rests on a single action verb ('comparison'), so it stops short of the comprehensive multi-action coverage of a 5.

Completeness

The 'what' is clear and specific (head-to-head agent comparison with named metrics), but there is no 'Use when...' clause or equivalent trigger guidance anywhere, which caps completeness at 3 per the judging guidelines.

Trigger Term Quality

'coding agents', 'Claude Code, Aider, Codex' are natural phrases users would say when needing this skill, but common synonyms like 'benchmark', 'evaluate agents', or 'agent comparison' are missing, keeping it below comprehensive coverage.

Distinctiveness Conflict Risk

The niche — empirical benchmarking of coding agents with pass rate/cost/time/consistency metrics — is distinct from most skills, with only minor overlap risk against generic benchmarking or testing skills, and lacks the explicit trigger phrases that would justify a 5.