api-response-optimization

Optimizes API performance through payload reduction, caching strategies, and compression techniques. Use when improving API response times, reducing bandwidth usage, or implementing efficient caching.

1.03x

Quality

93%

Does it follow best practices?

Impact

98%

1.03x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

94%

User Profile API with Selective Field Responses

Sparse fieldsets and field projection

Criteria

Without context

With context

Fields query param

100%

Comma-split parsing

100%

Field projection applied

100%

Null/missing fields default

100%

Sensitive fields removed

100%

Sensitive exclusion unconditional

100%

Returns JSON array

100%

Documented exclusions

100%

Optional chaining or null-safe parse

100%

GET endpoint defined

100%

Fields as projection argument

100%

Product Catalog API with HTTP Caching

HTTP caching with ETags and Cache-Control

Criteria

Without context

With context

MD5 ETag hash

100%

JSON.stringify input

100%

If-None-Match check

100%

304 response

100%

ETag response header

100%

Cache-Control public

100%

Cache-Control max-age=3600

100%

Caching strategy documented

100%

crypto module used

100%

hex digest

100%

Express API with Bandwidth-Efficient Response Compression

Response compression middleware

Criteria

Without context

With context

compression package used

100%

app.use middleware

100%

Custom filter function

100%

x-no-compression opt-out

100%

Default filter fallback

100%

Level set to 6

100%

Documentation complete

100%

compression in package.json

100%

Middleware before routes

100%

Opt-out header name exact

100%

Repository: secondsky/claude-skills
Commit: 90d6bd7

Evaluated: 29 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

User Profile API with Selective Field Responses Product Catalog API with HTTP Caching Express API with Bandwidth-Efficient Response Compression

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