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app-coding-standards

Provides coding standards for the Expensify App's React Native code, including performance patterns, consistency rules, and clean React architecture. Use when writing, modifying, or reviewing App code.

Quality

83%

Does it follow best practices?

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SKILL.md
Quality
Evals
Security

Quality

Content

78%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 SKILL.md is a well-designed, token-efficient index that delegates every rule to a standalone file and includes a concrete pre-commit review workflow. Its one material defect is that the bundle ships no rule files at all: all 55 rules/*.md links and the referenced reviewer agent file are absent, so the progressive-disclosure structure cannot actually deliver its content.

Suggestions

Ship the rules/ directory (all 55 referenced rule files) with the skill bundle, or inline the essential rules into SKILL.md if the files are not part of the distribution.

Include .claude/agents/code-inline-reviewer.md (or inline its instructions) so the pre-commit review step is executable as written.

Add a brief feedback loop after the review step: what to do when the code-inline-reviewer flags issues (fix, re-stage, re-review) before committing.

DimensionReasoningScore

Conciseness

The body is a lean index with zero concept re-teaching: a two-paragraph usage note, a four-row categories table, and one-line rule titles that each carry the rule's gist. Every token earns its place and the skill assumes Claude's competence throughout, matching the top anchor rather than 4, where trims would still be possible.

5 / 5

Actionability

The pre-commit workflow gives copy-paste-ready commands ("git add -A", "git diff --cached $(git merge-base origin/main HEAD)") and the reading instruction points to specific files per category. It does not reach 5 because the actual standards are delegated entirely to rule files not shipped in this bundle, and deciding which 'category applies to the files you touch' is left implicit; it is above 3 because the directives given are concrete and executable, not high-level hints or pseudocode.

4 / 5

Workflow Clarity

A clear sequence is present: read applicable rule files before editing, then stage everything and run the code-inline-reviewer subagent on the staged diff, with CI stated as running the same check (a validation checkpoint). It misses 5 because there is no explicit feedback loop for what to do when the reviewer flags issues, and it is above 3 because a real checkpoint (subagent review + CI parity) is stated rather than absent.

4 / 5

Progressive Disclosure

The index structure itself is exemplary — rule titles only, clearly signaled one-level-deep links organized by category — but none of the 55 referenced rules/*.md files (nor the referenced .claude/agents/code-inline-reviewer.md) exist in the skill bundle, so in practice none of the references can be followed. The structure alone would warrant 4–5, but references that resolve to missing files drop it to 3, one notch above 'content that should be separate is inline' since the split is designed correctly and only the files are absent.

3 / 5

Total

16

/

20

Passed

Description

82%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 description: it clearly states what the skill provides, scopes it to a specific niche (Expensify App React Native), and includes an explicit multi-trigger 'Use when' clause. The only real weakness is that it lists topic categories rather than concrete actions and omits two of the rule categories (UI, Onyx) that the body covers.

DimensionReasoningScore

Specificity

The description names the domain ("the Expensify App's React Native code") and three content areas ("performance patterns, consistency rules, and clean React architecture"), but the action verb "Provides coding standards" is generic and these are topic categories rather than concrete actions, with coverage gaps (the UI and Onyx rule categories go unmentioned). It does not reach 4 because it never enumerates specific actions or rules, and it is clearly above 2 because the domain and included areas are concrete rather than minimal.

3 / 5

Completeness

It explicitly answers both questions: what ("Provides coding standards for the Expensify App's React Native code, including performance patterns, consistency rules, and clean React architecture") and when, with three concrete trigger activities ("Use when writing, modifying, or reviewing App code"). It fits the top anchor rather than 4 because the when-clause enumerates multiple concrete triggers instead of a single generic one.

5 / 5

Trigger Term Quality

Good natural keyword coverage: "coding standards", "React Native", "performance patterns", and the trigger activities "writing, modifying, or reviewing App code" are phrases a user in this repo would naturally say. It falls short of 5 because common synonyms and variations like "style guide", "best practices", or "lint" are missing, and it is above 3 because coverage is genuinely good rather than merely "some relevant keywords".

4 / 5

Distinctiveness Conflict Risk

"the Expensify App's React Native code" carves out a clear niche with distinct triggers, making accidental triggering for unrelated coding or React skills very unlikely. Nothing overlaps meaningfully with other skills, so it is not 4.

5 / 5

Total

17

/

20

Passed

Validation

93%

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

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

relative_links

Relative link issues: 56 missing

Warning

Total

15

/

16

Passed

Repository

Expensify/App

Path

.claude/skills/app-coding-standards/SKILL.md

Reviewed

Table of Contents

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