Common error handling

Skill ComeOnOliver/skillshub/skills/HoangNguyen0403/agent-skills-standard/common-error-handling

Cross-cutting standards for error design, response shapes, error codes, and boundary placement. (triggers: **/*.service.ts, **/*.handler.ts, **/*.controller.ts, **/*.go, **/*.java, **/*.kt, **/*.py, error handling, exception, try catch, error boundary, error response, error code, throw)From its SKILL.md

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npx -y skills add ComeOnOliver/skillshub --skill common-error-handling

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SKILL.md

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Error Handling Standards

Priority: P1 (OPERATIONAL)

🏗 Error Architecture

API Layer: Map domain errors to HTTP responses globally.
Domain Layer: Throw pure business errors. NO HTTP status codes here.
Infra Layer: Wrap 3rd-party exceptions. Do NOT leak raw DB errors to API.
Standard Shape: APIs must return a standardized JSON envelope (code, message, traceId).

📦 Error Mechanics

Wrap: Add context (fmt.Errorf("process: %w", err), new Error('msg', { cause })).
Replace: Only when original error leaks sensitive details.
Error Codes: Use SCREAMING_SNAKE_CASE IDs (ORDER_PAYMENT_FAILED).

🚫 Anti-Patterns

Swallowing Errors: Never catch(e) {} without logging or re-throwing.
Stack Traces: Never expose stack traces in API responses.
Generic 500s: Use 400 with specific details for validation instead of 500.

References

API Error Contract

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