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building-api-gateway

Create API gateways with routing, load balancing, rate limiting, and authentication. Use when routing and managing multiple API services. Trigger with phrases like "build API gateway", "create API router", or "setup API gateway".

Install with Tessl CLI

npx tessl i github:jeremylongshore/claude-code-plugins-plus-skills --skill building-api-gateway
What are skills?

Overall
score

61%

Does it follow best practices?

Validation for skill structure

SKILL.md
Review
Evals

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 excels across all dimensions. It provides specific capabilities, natural trigger terms, explicit usage guidance, and clear differentiation from other skills. The description follows best practices by using third person voice and including a dedicated trigger phrase section.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions: 'routing, load balancing, rate limiting, and authentication' - these are distinct, actionable capabilities for API gateway creation.

3 / 3

Completeness

Clearly answers both what (create API gateways with specific features) and when (routing/managing multiple API services) with explicit trigger phrases provided.

3 / 3

Trigger Term Quality

Includes natural trigger phrases users would say: 'build API gateway', 'create API router', 'setup API gateway', plus domain terms like 'routing', 'API services', 'rate limiting'.

3 / 3

Distinctiveness Conflict Risk

Clear niche focused specifically on API gateways with distinct triggers; unlikely to conflict with general API skills or other infrastructure skills due to specific gateway terminology.

3 / 3

Total

12

/

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 content is a thin template that lacks concrete, actionable guidance. It describes what an API gateway builder should do at a high level but provides no executable code, specific commands, or real examples. The workflow has structural issues (duplicate numbering) and missing validation steps for what should be a complex multi-step process.

Suggestions

Add concrete, executable code examples for at least one framework (e.g., Express.js gateway setup with actual routing code)

Fix the duplicate step numbering and add explicit validation checkpoints (e.g., 'Test endpoint responds before adding middleware')

Replace the vague 'Bash(api:gateway-*)' reference with actual commands or explain what tools/scripts are available

Remove the duplicate 'This skill provides automated assistance' sentences and generic prerequisites that Claude already understands

DimensionReasoningScore

Conciseness

Contains some unnecessary boilerplate like 'This skill provides automated assistance for api gateway builder tasks' repeated twice, and generic prerequisites that Claude would know. However, the output structure and references are reasonably efficient.

2 / 3

Actionability

Provides only vague, abstract guidance with no concrete code examples, commands, or executable snippets. Instructions like 'Generate boilerplate code using Bash(api:gateway-*)' lack specifics on what that command actually does or looks like.

1 / 3

Workflow Clarity

Steps are poorly organized with duplicate numbering (two separate lists both starting at 1), no validation checkpoints, and no feedback loops for error recovery. The workflow jumps from planning to implementation without clear sequencing.

1 / 3

Progressive Disclosure

References external files for implementation details, errors, and examples which is good structure, but the main content is thin and the references feel like placeholders rather than well-signaled navigation to substantive content.

2 / 3

Total

6

/

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.

Validation13 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

allowed_tools_field

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

Warning

metadata_version

'metadata' field is not a dictionary

Warning

frontmatter_unknown_keys

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

Warning

Total

13

/

16

Passed

Reviewed

Table of Contents

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