Conciseness

Sections are lean and directive (e.g. 'Haiku: classification, boilerplate transforms, narrow edits'; the 15-minute unit rule), assuming Claude's competence. Minor trimmable instances remain: 'Redact secrets and private document data before logging or sharing' states a generic norm Claude already knows, and the closing paragraph on writes/retries is redundantly worded. Efficient with minor over-explanation, not fully lean.

Actionability

Provides an executable JavaScript adapter (with its illustrative nature explicitly justified: 'Replace this adapter with the actual tool's contract'), a concrete model-tier mapping, specific tracked cost fields, and an expected-classification table. Mostly executable guidance with minor gaps — no template or example for defining completion criteria, capability evals, or failure signatures.

Workflow Clarity

The Eval-First Loop is a clear baseline → execute → re-run → compare feedback loop, and the tool-result section gives an ordered three-boundary check with a recovery policy for writes and batch failures. Minor validation gaps: no explicit recovery step when eval deltas regress, and the overall flow across sections (decomposition → routing → sessions → evals) is presented as parallel lists rather than one sequenced workflow.

Progressive Disclosure

The body is well-organized with clear section headers, no buried references, and no bundle files to navigate (none exist). The ~75-line tool-result interpretation procedure with code and table is deep-dive content that could arguably live in a separate reference file, keeping SKILL.md as a leaner overview — a minor organization gap that keeps it below the top anchor.

Specificity

Names three specific practices — 'eval-first execution, decomposition, and cost-aware model routing' — in third person, matching the anchor for several specific actions with minor coverage gaps (session strategy and review guidance are not mentioned). It exceeds the 1-2 concrete actions of the lower anchor but lacks the comprehensive coverage of the top anchor.

Completeness

Explicitly answers both 'what' (the three named practices) and 'when' ('Use when planning or executing engineering work that agents will carry out end to end'). The when-clause is present but is a single abstract condition rather than concrete trigger phrases, so it does not reach the top anchor.

Trigger Term Quality

Trigger keywords ('planning', 'executing engineering work', 'agents') are relevant but abstract, missing natural variations a user would say such as 'delegate to agents', 'AI coding workflow', or 'evals'. This fits 'some relevant keywords but missing common variations or synonyms' rather than the good-coverage anchor above.

Distinctiveness Conflict Risk

Distinctive niche markers like 'eval-first execution' and 'cost-aware model routing' separate it from most skills, though the broad 'planning or executing engineering work' phrase creates minor overlap risk with general planning or coding-workflow skills. Mostly distinct with minor overlap, not a fully clear niche.