api-error-handling

Implements standardized API error responses with proper status codes, logging, and user-friendly messages. Use when building production APIs, implementing error recovery patterns, or integrating error monitoring services.

1.49x

Quality

82%

Does it follow best practices?

Impact

97%

1.49x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

91%

54%

User Registration API — Error Handling

Standard error response format and ApiError class

Criteria

Without context

With context

Nested error wrapper

100%

Error code field

100%

Status in body

100%

RequestId field

100%

ApiError class

100%

Factory methods

100%

Validation details array

100%

500 message sanitized

100%

No stack trace exposed

100%

500 error logging

100%

4xx warning logging

100%

Inventory Service — Resilient External API Client

Circuit breaker implementation

Criteria

Without context

With context

Three states

100%

Default threshold = 5

100%

Default timeout = 30000

100%

Throws when OPEN

100%

Failure counter reset on success

100%

Opens at threshold

100%

OPEN to HALF_OPEN

100%

HALF_OPEN recovery

100%

HALF_OPEN failure

100%

State logged in demo

100%

40%

Weather Data Aggregator — Flask API with Error Handling

Flask error handling with retry and monitoring

Criteria

Without context

With context

Flask errorhandler decorators

50%

100%

Request ID middleware

100%

request_id in error responses

100%

Nested error format

100%

SCREAMING_SNAKE_CASE codes

100%

500 generic message

100%

Server error logging level

100%

Client error warning level

57%

100%

Retry decorator in weather_client

100%

Exponential backoff with jitter

50%

100%

Sentry init with SENTRY_DSN

100%

Sentry request_id tag

100%

Repository: secondsky/claude-skills
Commit: 90d6bd7

Evaluated: 30 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

User Registration API — Error Handling Inventory Service — Resilient External API Client Weather Data Aggregator — Flask API with Error Handling

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