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mobilebuildmcp-runtime-boundary-review

Use when reviewing MobileBuildMCP runtime boundary changes across MCP, direct CLI invocation, daemon-routed tools, and Xcode IDE bridge routing.

72

Quality

91%

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SKILL.md
Quality
Evals
Security

Quality

Content

100%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.

An exemplary lean review skill: exact file targets, specific guardrail checks, and copy-paste validation commands with zero padding. Structure and length are appropriate for a single-purpose read-only review, and nothing is missing that a bundle file would supply.

DimensionReasoningScore

Conciseness

At ~36 lines every line earns its place: a one-line purpose, an exact file list, seven terse guardrail checks, and three validation commands. There is no explanation of concepts Claude already knows and no padding, matching the lean-and-efficient anchor at 5.

5 / 5

Actionability

The guidance is fully concrete and executable: exact paths to inspect (`src/runtime/tool-invoker.ts`, `manifests/tools/*.yaml`, specific .mdx docs) and copy-paste-ready commands (`npm test -- src/runtime/__tests__/tool-invoker.test.ts`, `npm run typecheck`, `npx skill-check ...`). The guardrails themselves are specific, checkable review criteria covering the common cases — the anchor-5 fit for an instruction-only skill.

5 / 5

Workflow Clarity

This is a single-purpose review skill under 50 lines where the action is unambiguous: inspect the listed files against the guardrails, then run the explicit validation commands as the checkpoint. Validation steps are present and the skill is read-only by default, so no destructive-operation cap applies — the simple-skill exception for anchor 5 is met.

5 / 5

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are absent) and none are needed at this size: the body is a well-organized set of short sections (scope, files, guardrails, validation) with no content that belongs in a separate file. This matches the under-50-lines guideline where well-organized sections alone score 5.

5 / 5

Total

20

/

20

Passed

Description

78%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.

A strong, highly targeted description with explicit trigger phrasing and good domain keyword coverage. Its main weakness is that the capability side is implicit — it says when to trigger but only lightly implies what the review entails. Third-person voice is correct and there is no fluff.

Suggestions

State the what explicitly alongside the when, e.g. 'Inspect the runtime tool catalog, invoker, and manifests against routing guardrails, then run targeted tests. Use when reviewing MobileBuildMCP runtime boundary changes...'

Add one or two natural trigger variations users might phrase differently, such as 'tool routing' or 'manifest availability', to broaden keyword coverage without adding length.

DimensionReasoningScore

Specificity

The description enumerates several concrete review areas — "MCP, direct CLI invocation, daemon-routed tools, and Xcode IDE bridge routing" — naming the domain precisely, but the only action stated is "reviewing," so it falls just short of the multiple-concrete-actions anchor at 5.

4 / 5

Completeness

The "when" is explicit ("Use when reviewing MobileBuildMCP runtime boundary changes") and the "what" is present (reviewing runtime boundary changes across four paths), but the what-side is thin — it never states what the review actually does (inspect files, check guardrails, run tests). Fits anchor 4 ('both present, one could be more specific') rather than 5 ('clearly and explicitly answers both').

4 / 5

Trigger Term Quality

Good natural keyword coverage: "MobileBuildMCP", "MCP", "direct CLI invocation", "daemon-routed tools", "Xcode IDE bridge" — terms a user of this codebase would say. A few natural variations (e.g., "tool routing", "manifest", "invocation path") are missing, which is exactly the anchor-4 fit rather than 5.

4 / 5

Distinctiveness Conflict Risk

Names a specific project (MobileBuildMCP) and a narrow concern (runtime boundary routing); no other plausible skill would trigger on these terms, matching the clear-niche anchor at 5 rather than the minor-overlap anchor at 4.

5 / 5

Total

17

/

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-runtime-boundary-review/SKILL.md

Reviewed

Table of Contents

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