common-error-handling SKILL.md skillA
This file is byte-identical to the first copy the registry indexed, one of 3 indexed copies. Same content hash, so the same checks give both the same grade.
common-error-handling from hoangnguyen0403/agent-skills-standard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hoangnguyen0403/agent-skills-standard/common-error-handling@git:20260929.bdf124bPins git:20260929.bdf124b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hoangnguyen0403/agent-skills-standard
- Path
.claude/skills/common/common-error-handling/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260929.bdf124b, committed Sep 29, 2026
- Size
- 1,984 bytes
- Repository stars
- 583
- License
- MIT
Cross-cutting standards for error design, response shapes, error codes, and boundary placement across API, domain, and infrastructure layers. Use when defining error hierarchies, wrapping exceptions, building standardized error responses, or placing error boundaries in layered architectures.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Error Handling Standards
## **Priority: P1 (HIGH)**
## 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. NOT leak raw DB errors to API.
- **Standard Shape**: APIs must return standardized JSON envelope:
See [implementation examples](references/implementation.md) for standard error response shape.
## 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.
- Never silently ignore an error: an empty catch must become an explicit log, handling branch, returned error, or rethrow.
- **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)
## Failure-handling checklist
…Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/common-error-handling@sha256:0e38dbe7c85e4f75The line at the top of this page pins the label git:20260929.bdf124b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ksyzlqixa3ctzh64)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 29, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1984 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hoangnguyen0403/agent-skills-standard · 583 stars · license MIT · pushed 2026-11-07 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_ksyzlqixa3ctzh64 GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/common-error-handling GET https://markdownregistry.com/api/v1/blob/0e38dbe7c85e4f753e090f4eea512a2a465c5b81d5cbea34bc5fbb0ac1270955
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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