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common-error-handling

Cross-cutting standards for error design, response shapes, error codes, and boundary placement.

Skill by wildbitca

IndexedApache-2.0★ 1
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/wildbitca-common-error-handling

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About

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)

Use cases: design

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/common-error-handling

What's inside

Skill name
common-error-handling
Description
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)
License
Apache-2.0
Instructions
28 lines in SKILL.md · view on GitHub

Files (3)

  • SKILL.md
  • api-error-contract.md · references/
  • example.md · references/

SKILL.md (first lines)

# 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](references/api-error-contract.md)

From wildbitca/ai-resources, Apache-2.0.

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Last commit (this folder)
Oct 23, 2026 (6 days ago)
Last release
Oct 24, 2026 (4 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
Apache-2.0
Repository
github.com/wildbitca/ai-resources
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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Cite this page

common-error-handling skill. Agent Mart. https://agentmart.dev/skills/wildbitca-common-error-handling (last updated 2026-10-24)