Conciseness

The body is lean and assumes competence: no concept explanations, no padding — every section (selection rule, 8-step workflow, three command blocks, comparison rules, done criteria) carries operational content. It matches the 5 anchor; nothing reads as over-explanation that would justify 4.

Actionability

Three copy-paste-ready shell blocks (normalize, compare, paired capture with env vars) plus an ordered diff-inspection checklist make the guidance mostly executable. It falls short of 5 only because some paths are left to discovery ('replace the first command with the discovered Claude Code command', run captures 'manually with tmux' without a concrete invocation).

Workflow Clarity

The 8-step workflow is clearly sequenced and includes an explicit feedback loop ('Patch Qwen Code, rerun the smallest failing scenario, and repeat') plus a Done Criteria checklist that serves as validation checkpoints, with further iteration detail in the reference file. This matches the 5 anchor; the operation is not destructive/batch so no cap applies.

Progressive Disclosure

The body is a well-organized overview with one clearly signaled, one-level-deep reference ('Read references/alignment-workflow.md before the first comparison pass' — a real file) and three real scripts referenced by name, with detailed diff-triage priorities appropriately split into the reference. Structure matches the 5 anchor with easy navigation.

Specificity

The description lists multiple concrete actions — 'run the selected reference agent and Qwen Code under the same scenario, capture HTTP and terminal traces, compare request bodies, tool/function schemas, outputs, and iterate' — covering the skill's full scope with no generic filler. It matches the 5 anchor (comprehensive list of specific concrete actions) rather than 4, since there are no meaningful coverage gaps.

Completeness

Both questions are answered explicitly: 'what' via the concrete action list (capture, compare, iterate) and 'when' via the explicit trigger 'Use after a Codex or Claude Code feature has been implemented in Qwen Code'. This matches the 5 anchor with a concrete trigger phrase; it is not 4 because the 'when' clause is already explicit and specific.

Trigger Term Quality

Strong domain keywords users would naturally say: 'Codex', 'Claude Code', 'Qwen Code', 'reference agent', 'traces', 'compare', 'reproduce'. A few natural synonyms are missing (e.g., 'parity', 'matching behavior', 'diff traces'), so it sits between the 4 and 5 anchors but clearly above 3, where common variations would be absent.

Distinctiveness Conflict Risk

The Qwen Code reference-agent parity niche is highly specific and the trigger conditions (feature implemented, parity evidence needed) would not fire for unrelated skills. Minimal conflict risk, matching the 5 anchor's 'clear niche with distinct triggers'.