Modern Angular UI patterns for loading states, error handling, and data display. Use when building UI components, handling async data, or managing component states.
77
72%
Does it follow best practices?
Impact
85%
2.65xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./skills/angular-ui-patterns/SKILL.mdQuality
Discovery
67%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 has good structural completeness with an explicit 'Use when...' clause, but lacks specificity in its concrete actions and trigger terms. The Angular domain anchors it somewhat, but the broad terms like 'UI components' and 'async data' could easily overlap with other frontend framework skills. Adding more concrete actions and Angular-specific terminology would significantly improve skill selection accuracy.
Suggestions
Add specific concrete actions like 'create skeleton loaders, implement error boundaries, build async pipe patterns, manage Observable-based data flows' instead of broad categories.
Include more Angular-specific trigger terms such as 'Observable', 'RxJS', 'signals', 'ngIf/ngSwitch', '@defer', 'async pipe' to improve distinctiveness from other framework skills.
Add file type or pattern references like '.component.ts', 'Angular signals', or 'standalone components' to further differentiate from React/Vue UI skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Angular UI) and mentions some areas (loading states, error handling, data display), but these are more categories than concrete actions. It doesn't list specific actions like 'create skeleton loaders', 'implement error boundaries', or 'build data tables'. | 2 / 3 |
Completeness | Clearly answers both 'what' (Angular UI patterns for loading states, error handling, data display) and 'when' (Use when building UI components, handling async data, or managing component states) with an explicit 'Use when...' clause. | 3 / 3 |
Trigger Term Quality | Includes some relevant terms like 'Angular', 'UI components', 'loading states', 'async data', 'component states', but misses common variations users might say such as 'spinner', 'skeleton loader', 'error message', 'Observable', 'RxJS', 'ngIf', 'signals', or specific Angular version references. | 2 / 3 |
Distinctiveness Conflict Risk | While 'Angular' provides some specificity, terms like 'UI components', 'async data', and 'component states' are broad enough to overlap with React, Vue, or general frontend skills. The description could conflict with other UI framework skills or general component pattern skills. | 2 / 3 |
Total | 9 / 12 Passed |
Implementation
77%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a strong, highly actionable Angular UI patterns skill with executable code examples covering all major UI states. Its main weakness is length—there's meaningful redundancy between the pattern sections and the anti-patterns section, and some large code blocks (forms, dialogs) could be extracted to separate files. The decision trees and checklists add excellent workflow clarity.
Suggestions
Extract the full form pattern and dialog/modal pattern into separate referenced files (e.g., FORMS.md, DIALOGS.md) to reduce the main skill's token footprint
Consolidate the Anti-Patterns section with the inline CORRECT/WRONG examples already present in each section to eliminate redundancy
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is fairly comprehensive but includes some redundancy—several patterns are shown multiple times (e.g., button loading state appears in both the Button State Patterns section and the Anti-Patterns section with near-identical code). The CORRECT/WRONG pattern comparisons add value but are repeated across sections. Some sections like the form pattern are quite lengthy and could be trimmed. | 2 / 3 |
Actionability | Excellent actionability throughout—every pattern includes fully executable TypeScript/Angular component code with complete template and class definitions. The code uses modern Angular patterns (signals, standalone components, new control flow syntax) and is copy-paste ready. | 3 / 3 |
Workflow Clarity | The loading state decision tree provides a clear, unambiguous sequence for choosing UI states. The error handling hierarchy is well-ordered from least to most severe. The UI State Checklist at the end serves as an explicit validation checkpoint before completing any component. For a pattern/reference skill, the workflows are appropriately clear. | 3 / 3 |
Progressive Disclosure | The content is well-structured with clear section headers and a logical progression from loading states through error handling to forms and dialogs. However, at ~300+ lines, some sections (especially the full form pattern and dialog pattern) could be split into separate reference files. The references to other skills at the bottom are minimal and lack links. | 2 / 3 |
Total | 10 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
skill_md_line_count | SKILL.md is long (513 lines); consider splitting into references/ and linking | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
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Table of Contents
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