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aprameyakaprameyak/coding-skills/error-handling/SKILL.md

error-handling

Skill1 starsChanged 41 days agoMITView on GitHub

Implement consistent, safe error handling. Use when adding failure paths, refactoring try/catch, designing error types, or improving observability.

80 other projects use a version of this.

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Projects with it also use convention-learner, caching and 10 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
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    Apply resilience patterns (retry, backoff, circuit breaking) when writing or reviewing code that makes outbound HTTP/REST calls, database operations, or any I/O that can experience transient failures. Use this skill when: (1) writing new code that calls external services or APIs, (2) reviewing code that uses fetch, HTTP clients, or service-to-service calls, (3) adding queue consumers or workers that interact with remote systems, (4) debugging intermittent failures in production.

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The file

We split this skill into the rules it gives an agent

4 rules. 0 are common, 4 are distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 64 edited versions we read keep these.

  • 4

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Use typed/domain errors for expected failures.

    line 11
  2. Distinctive:

    Do not swallow errors without logging or propagating.

    line 12
  3. Distinctive:

    Never leak secrets, stack traces, or internal paths to untrusted clients.

    line 14
  4. Distinctive:

    Prefer central mapping (domain → HTTP/RPC) over ad-hoc status codes.

    line 21

“Common” is measured: kept by at least 6 in 10 of the 64 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Error Handling

Rules

  • Fail at trust boundaries with clear, actionable errors.
  • Use typed/domain errors for expected failures; reserve generic 500s for unexpected ones.
  • Do not swallow errors without logging or propagating.
  • Include stable error codes for clients when an API exists.
  • Never leak secrets, stack traces, or internal paths to untrusted clients.
  • Make retries safe: only retry transient failures with backoff.

Patterns

  • Validate early; return before side effects when possible.
  • Wrap low-level errors with context once; avoid giant wrap chains.
  • Prefer central mapping (domain → HTTP/RPC) over ad-hoc status codes.
  • Log with correlation IDs at the boundary where the request is known.

Checklist

  • Expected failures are handled
  • Unexpected failures are logged
  • User/client messages are safe
  • Partial failure semantics are defined for multi-step ops

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