mobile-app-builder
Specialized mobile application developer with expertise in native iOS/Android development and cross-platform frameworks
37
22%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Advisory
Suggest reviewing before use
Optimize this skill with Tessl
npx tessl skill review --optimize ./mobile-app-builder/skills/SKILL.mdQuality
Discovery
22%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This description reads more like a resume headline than a skill description. It lacks concrete actions, has no 'Use when...' clause, and relies on vague qualifiers like 'specialized' and 'expertise in' rather than describing what the skill actually does. While it does mention some useful domain keywords (iOS, Android, cross-platform), it fails to guide Claude on when to select this skill.
Suggestions
Replace the resume-style phrasing with concrete actions, e.g., 'Builds native iOS and Android apps, creates cross-platform mobile apps using React Native or Flutter, configures mobile build systems, and debugs platform-specific issues.'
Add an explicit 'Use when...' clause, e.g., 'Use when the user asks about mobile app development, iOS/Android projects, Swift, Kotlin, React Native, Flutter, or mobile UI design.'
Remove subjective qualifiers like 'Specialized' and 'expertise in' and use third-person action verbs instead (e.g., 'Develops', 'Configures', 'Debugs').
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | The description uses vague language like 'expertise in' and 'specialized' without listing any concrete actions. It describes what the skill *is* rather than what it *does*. No specific actions like 'build UI components', 'configure build systems', or 'debug mobile apps' are mentioned. | 1 / 3 |
Completeness | The description partially addresses 'what' (mobile development) but only in vague terms, and completely lacks any 'when' clause or explicit trigger guidance. There is no 'Use when...' or equivalent statement. | 1 / 3 |
Trigger Term Quality | Contains some relevant keywords like 'iOS', 'Android', 'cross-platform', 'mobile application', and 'native' that users might naturally mention. However, it misses common variations like 'React Native', 'Flutter', 'Swift', 'Kotlin', 'app development', '.apk', '.ipa', or 'mobile UI'. | 2 / 3 |
Distinctiveness Conflict Risk | The mention of 'mobile application', 'iOS/Android', and 'cross-platform frameworks' provides some specificity to a mobile development niche, but the broad framing could overlap with general coding skills, web development skills, or framework-specific skills. | 2 / 3 |
Total | 6 / 12 Passed |
Implementation
22%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill reads as a high-level role description or mission statement rather than an actionable skill file. It lacks any concrete code, commands, templates, or executable examples that would help Claude actually build mobile applications. The workflow is too abstract to guide real implementation, and the content largely restates knowledge Claude already possesses about mobile development.
Suggestions
Add concrete, executable code examples for at least one platform (e.g., a SwiftUI view scaffold, a Jetpack Compose screen template, or a React Native project setup command).
Replace the abstract workflow with specific, sequenced steps including validation checkpoints—e.g., 'Run `flutter analyze` before proceeding' or 'Verify on a physical device with `adb install`'.
Remove or drastically condense the 'Core Capabilities' and 'Tools and Platforms' sections, which list things Claude already knows, and replace them with project-specific decision trees or templates.
Add references to deeper guides or templates (e.g., 'See [IOS_PATTERNS.md] for SwiftUI navigation patterns') to leverage progressive disclosure for platform-specific details.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is moderately efficient but reads like a generic role description rather than a targeted skill. Sections like 'Core Capabilities' and 'Tools and Platforms' list things Claude already knows without adding novel, project-specific guidance. Some tightening is possible. | 2 / 3 |
Actionability | The skill is entirely abstract and descriptive—no concrete code examples, no specific commands, no executable snippets, no copy-paste-ready patterns. Every section describes what to do at a high level without showing how to do it. | 1 / 3 |
Workflow Clarity | The workflow is a vague 5-step process with no validation checkpoints, no feedback loops, and no concrete commands or tools at each step. For a skill involving build pipelines, device testing, and store submission, the lack of explicit verification steps is a significant gap. | 1 / 3 |
Progressive Disclosure | The content is organized into clear sections with reasonable headers, but it's a monolithic file with no references to deeper materials (e.g., platform-specific guides, example projects, or architecture templates). The structure is present but doesn't leverage progressive disclosure. | 2 / 3 |
Total | 6 / 12 Passed |
Validation
90%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 10 / 11 Passed | |
- Repository
- OpenRoster-ai/awesome-openroster
- Commit
09aef5d
- Reviewed
Table of Contents
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