cognito
AWS Cognito user authentication and authorization service. Use when setting up user pools, configuring identity pools, implementing OAuth flows, managing user attributes, or integrating with social identity providers.
86
82%
Does it follow best practices?
Impact
90%
1.11xAverage score across 3 eval scenarios
Risky
Do not use without reviewing
Quality
Discovery
100%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 well-crafted skill description that follows best practices. It uses third person voice, clearly identifies the AWS service domain, lists specific capabilities, and includes an explicit 'Use when...' clause with natural trigger terms. The description is concise yet comprehensive enough to distinguish it from other authentication-related skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'setting up user pools', 'configuring identity pools', 'implementing OAuth flows', 'managing user attributes', 'integrating with social identity providers'. These are distinct, actionable capabilities. | 3 / 3 |
Completeness | Clearly answers both what ('AWS Cognito user authentication and authorization service') and when ('Use when setting up user pools, configuring identity pools...'). Has explicit 'Use when...' clause with specific trigger scenarios. | 3 / 3 |
Trigger Term Quality | Includes natural keywords users would say: 'AWS Cognito', 'user pools', 'identity pools', 'OAuth flows', 'user attributes', 'social identity providers'. These cover the main terminology users would use when seeking help with Cognito. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive with AWS Cognito-specific terminology like 'user pools', 'identity pools', and 'OAuth flows'. Unlikely to conflict with generic authentication skills due to the specific AWS service focus. | 3 / 3 |
Total | 12 / 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 AWS Cognito skill with excellent executable code examples covering the full authentication lifecycle. However, it's overly verbose for a skill file, including concept explanations Claude doesn't need and reference material that should be in separate files. The lack of explicit validation steps after operations (especially user pool creation and authentication) limits its workflow clarity.
Suggestions
Remove introductory explanations and concept definitions (Core Concepts section) - Claude knows what user pools and tokens are
Add validation checkpoints after key operations (e.g., 'Verify pool created: aws cognito-idp describe-user-pool --user-pool-id $POOL_ID')
Move CLI Reference and Troubleshooting sections to separate linked files to reduce main skill size
Add error handling examples in the authentication flow showing how to handle common failures
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is reasonably efficient but includes some unnecessary explanations Claude would know (e.g., 'Amazon Cognito provides authentication, authorization, and user management' and basic concept definitions). The token table and CLI reference tables add bulk that could be trimmed. | 2 / 3 |
Actionability | Excellent executable code examples throughout - complete Python snippets for sign-up, authentication, token refresh, and credential retrieval. CLI commands are copy-paste ready with realistic parameters and proper JSON formatting. | 3 / 3 |
Workflow Clarity | While individual operations are clear, the skill lacks explicit validation checkpoints and feedback loops. For example, after creating a user pool or app client, there's no verification step. The authentication flow doesn't show error handling or retry logic for failed attempts. | 2 / 3 |
Progressive Disclosure | The content is well-organized with a table of contents and clear sections, but it's monolithic - all content is inline rather than appropriately split. The CLI reference tables and troubleshooting sections could be separate files with links from the main skill. | 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 |
|---|---|---|
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 10 / 11 Passed | |
- Repository
- itsmostafa/aws-agent-skills
- Commit
5df6da7
- Reviewed
Table of Contents
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