auth0-angular
Use when adding authentication to Angular applications with route guards and HTTP interceptors - integrates @auth0/auth0-angular SDK for SPAs
84
77%
Does it follow best practices?
Impact
100%
1.47xAverage score across 3 eval scenarios
Advisory
Suggest reviewing before use
Optimize this skill with Tessl
npx tessl skill review --optimize ./plugins/auth0/skills/auth0-angular/SKILL.mdQuality
Discovery
89%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 is a solid description with an explicit 'Use when' trigger clause, strong natural keywords covering the Auth0/Angular authentication niche, and clear distinctiveness. The main weakness is that the specific capabilities could be more granular — listing concrete actions like configuring login/logout, protecting routes, and attaching bearer tokens would strengthen the specificity dimension.
Suggestions
Expand the capability list with more concrete actions, e.g., 'configure login/logout flows, protect routes with AuthGuard, attach bearer tokens via HTTP interceptors'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (authentication in Angular) and some actions (route guards, HTTP interceptors), but doesn't list multiple concrete actions like 'configure login flows, protect routes, attach tokens to API requests'. | 2 / 3 |
Completeness | Explicitly answers both what (integrates Auth0 Angular SDK for SPAs with route guards and HTTP interceptors) and when ('Use when adding authentication to Angular applications'), with a clear 'Use when...' clause. | 3 / 3 |
Trigger Term Quality | Includes strong natural keywords users would say: 'authentication', 'Angular', 'route guards', 'HTTP interceptors', '@auth0/auth0-angular', 'SDK', 'SPAs'. These cover the terms a developer would naturally use when seeking this functionality. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive — targets a specific SDK (@auth0/auth0-angular), a specific framework (Angular), and specific patterns (route guards, HTTP interceptors). Unlikely to conflict with generic auth skills or other framework auth skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
64%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a solid, actionable skill with complete executable code examples covering both Angular module patterns. Its main weaknesses are the lack of validation checkpoints in the multi-step workflow (e.g., verifying Auth0 Dashboard config matches, checking for common errors after ng serve) and some content bloat from sections like 'When NOT to Use' and a partially redundant Quick Reference. The progressive disclosure structure is well-designed but the inline content could be tighter.
Suggestions
Add an explicit validation checkpoint after Step 2 (e.g., 'Verify your Auth0 Dashboard has http://localhost:4200 in Allowed Callback URLs before proceeding') and after Step 5 (e.g., 'Expected: clicking Login redirects to Auth0 Universal Login page; if you see a 403, check redirect URI configuration').
Remove or significantly condense the 'When NOT to Use' section and 'Related Skills' section — Claude can infer when not to use an Angular SDK, and related skill references add little actionable value.
Consolidate the Quick Reference section into the Detailed Documentation section to avoid duplication — the core services and common use cases are already demonstrated in the code or linked to reference files.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill provides both standalone and NgModule patterns which is useful, but includes some unnecessary sections like 'When NOT to Use' and 'Related Skills' that pad the content. The 'Prerequisites' section and common mistakes table add moderate value but could be tighter. The Quick Reference section at the end partially duplicates what's already shown in the code examples. | 2 / 3 |
Actionability | The skill provides fully executable, copy-paste ready code for every step: npm install command, environment configuration, both standalone and NgModule setup, and a complete component with login/logout. Specific file paths are given for each code block. | 3 / 3 |
Workflow Clarity | The 5-step workflow is clearly sequenced (install → configure env → configure module → add UI → test), but there are no validation checkpoints between steps. Step 5 just says 'ng serve' with no guidance on what to verify, no error recovery if the login flow fails, and no explicit check that Auth0 Dashboard configuration matches the app configuration. | 2 / 3 |
Progressive Disclosure | The skill references three well-organized reference files (setup.md, integration.md, api.md) with clear descriptions, which is good structure. However, no bundle files were provided, so these references cannot be verified. Additionally, the main SKILL.md itself is quite long with inline code that could be more concise, and the Quick Reference section at the bottom partially duplicates the Detailed Documentation links. | 2 / 3 |
Total | 9 / 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 |
|---|---|---|
metadata_field | 'metadata' should map string keys to string values | Warning |
Total | 10 / 11 Passed | |
- Repository
- auth0/agent-skills
- Commit
bdf0dc2
- Reviewed
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