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building-api-authentication

tessl i github:jeremylongshore/claude-code-plugins-plus-skills --skill building-api-authentication

Build secure API authentication systems with OAuth2, JWT, API keys, and session management. Use when implementing secure authentication flows. Trigger with phrases like "build authentication", "add API auth", or "secure the API".

61%

Overall

Validation

Implementation

Activation

SKILL.md
Review
Evals

Validation

81%
CriteriaDescriptionResult

skill_md_line_count

SKILL.md line count is 72 (<= 500)

Pass

frontmatter_valid

YAML frontmatter is valid

Pass

name_field

'name' field is valid: 'building-api-authentication'

Pass

description_field

'description' field is valid (230 chars)

Pass

description_voice

'description' uses third person voice

Pass

description_trigger_hint

Description includes an explicit trigger hint

Pass

compatibility_field

'compatibility' field not present (optional)

Pass

allowed_tools_field

'allowed-tools' contains unusual tool name(s)

Warning

metadata_version

'metadata' field is not a dictionary

Warning

metadata_field

'metadata' field not present (optional)

Pass

license_field

'license' field is present: MIT

Pass

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

body_present

SKILL.md body is present

Pass

body_examples

Examples detected (code fence or 'Example' wording)

Pass

body_output_format

Output/return/format terms detected

Pass

body_steps

Step-by-step structure detected (ordered list)

Pass

Total

13

/

16

Passed

Implementation

22%

This skill content is too abstract and generic for its security-critical domain. It lacks any concrete code examples for OAuth2, JWT, or API key implementation despite the description promising these. The workflow has structural issues (duplicate numbering) and critically missing validation steps for authentication systems where security verification is paramount.

Suggestions

  • Add concrete, executable code examples for at least one authentication method (e.g., JWT token generation/validation with a specific framework)
  • Fix the duplicate step numbering and add explicit security validation checkpoints (e.g., 'Verify token expiration handling', 'Test for common auth vulnerabilities')
  • Remove generic boilerplate ('This skill provides automated assistance...') and replace with a brief, actionable quick-start showing a minimal working auth flow
  • Include specific commands or tool invocations rather than abstract references like 'Bash(api:auth-*)' - show actual usage patterns
DimensionReasoningScore

Conciseness

Contains some unnecessary boilerplate language ('This skill provides automated assistance...') and generic prerequisites that Claude would know, but the instructions themselves are reasonably compact without excessive explanation.

2 / 3

Actionability

Provides only vague, abstract guidance with no concrete code examples, specific commands, or executable snippets. Instructions like 'Implement endpoint handlers with business logic' and 'Add input validation' describe rather than instruct.

1 / 3

Workflow Clarity

Steps are poorly organized with duplicate numbering (two separate lists both starting at 1), no validation checkpoints for security-critical authentication work, and no feedback loops for error recovery in a domain where security validation is essential.

1 / 3

Progressive Disclosure

References external files appropriately (implementation.md, errors.md, examples.md) but the main content lacks substance - it's essentially just pointers to other files without providing a useful quick-start or overview that stands on its own.

2 / 3

Total

6

/

12

Passed

Activation

100%

This is a well-crafted skill description that clearly defines its scope (API authentication), lists specific technologies it covers, and provides explicit trigger guidance with natural user phrases. It uses proper third-person voice and is concise without being vague. The description effectively distinguishes itself from other potential security or coding skills.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions and technologies: 'OAuth2, JWT, API keys, and session management' along with the action 'Build secure API authentication systems'.

3 / 3

Completeness

Clearly answers both what ('Build secure API authentication systems with OAuth2, JWT, API keys, and session management') and when ('Use when implementing secure authentication flows' plus explicit trigger phrases).

3 / 3

Trigger Term Quality

Includes natural trigger phrases users would say: 'build authentication', 'add API auth', 'secure the API', plus technical terms like OAuth2, JWT, API keys that users would mention.

3 / 3

Distinctiveness Conflict Risk

Clear niche focused specifically on API authentication with distinct technologies (OAuth2, JWT, API keys) that wouldn't overlap with general coding or other security skills.

3 / 3

Total

12

/

12

Passed

Reviewed

Table of Contents

ValidationImplementationActivation

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