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mobilebuildmcp-structured-output-review

Use when reviewing MobileBuildMCP structured output schema changes, schema versioning, manifest outputSchema metadata, and JSON fixture compatibility.

69

Quality

87%

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SKILL.md
Quality
Evals
Security

Quality

Content

93%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is an exemplary lean review checklist: zero padding, concrete file targets, unambiguous acceptance criteria, and executable validation commands. The only gap is workflow-level — it never sequences the steps or tells Claude how to handle a failed guardrail or report findings.

DimensionReasoningScore

Conciseness

Every line earns its place: the 41-line body has exact file globs, terse guardrail criteria ("`schema` uses `mobilebuildmcp.output.<name>` format", "`schemaVersion` uses integer strings only"), and four exact commands — no padding and no explanation of concepts Claude already knows.

5 / 5

Actionability

Fully executable: the Validation section lists copy-paste-ready commands (`npm run test:schema-fixtures`, `npm test -- src/core/__tests__/structured-output-schema.test.ts`, `npm run typecheck`, `npx skill-check ...`), files are given as exact paths/globs, and each guardrail is a concrete, checkable acceptance criterion rather than vague direction.

5 / 5

Workflow Clarity

The section order (Review scope → Files to inspect → Guardrails → Validation) implies a coherent review flow and the commands serve as checkpoints, but there is no explicit sequencing or failure handling (e.g. what to do when a guardrail fails or how to report findings). Not level 5's explicit validate-fix-retry loop; clearly above level 3's implicit-only checkpoints.

4 / 5

Progressive Disclosure

The skill is under 50 lines, has no bundle files to disclose, and its four well-labeled sections split scope, targets, criteria, and validation cleanly — per the rubric's simple-skill guidance, well-organized sections alone merit a 5 here.

5 / 5

Total

19

/

20

Passed

Description

73%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is a well-scoped, distinctive trigger for a narrowly-defined review task, with natural domain keywords. Its main weakness is that it specifies when to use the skill far more richly than what the skill actually does — the capability side rests on a single verb, "reviewing".

Suggestions

Add a short capability statement before the trigger clause, e.g. "Reviews structured output schema changes for correctness and compatibility against project guardrails." so the 'what' is as explicit as the 'when'.

Include natural trigger variations users might phrase differently, such as "output schema", "schema migration", or "structured output fixtures", to broaden keyword coverage.

State the outcome of the review (e.g. that it verifies manifest/schema consistency and fixture validation) so users can distinguish it from a general code-review skill.

DimensionReasoningScore

Specificity

"reviewing MobileBuildMCP structured output schema changes, schema versioning, manifest outputSchema metadata, and JSON fixture compatibility" names a precise domain and enumerates specific review objects, but the only concrete action is the single verb "reviewing" — one action plus a list of artifacts, not the several distinct actions of the level-4/5 anchors.

3 / 5

Completeness

The explicit "Use when reviewing..." clause supplies trigger guidance (so the missing-trigger cap at 3 does not apply), and both what (review these artifacts) and when (schema change/versioning/manifest/fixture events) are present. Not level 5 because the what is a thin single verb fused into the when clause rather than a separate, concrete statement of capabilities.

4 / 5

Trigger Term Quality

"structured output", "schema versioning", "manifest outputSchema metadata", "JSON fixture compatibility" are natural phrases a developer of this repo would say when they need the skill. Missing common variations/synonyms such as "output schema", "schema migration", or file extensions, so not the comprehensive level-5 coverage.

4 / 5

Distinctiveness Conflict Risk

"MobileBuildMCP structured output schema" is a clear niche with distinct, project-specific triggers; no realistic overlap with other skills, matching the level-5 anchor.

5 / 5

Total

16

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

getsentry/XcodeBuildMCP

Path

.agents/skills/mobilebuildmcp-structured-output-review/SKILL.md

Reviewed

Table of Contents

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