error-handling-patterns SKILL.md skillA

error-handling-patterns from event4u-app/agent-config is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add event4u-app/agent-config/error-handling-patterns@git:20260911.17eca4f

Pins git:20260911.17eca4f in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
event4u-app/agent-config
Path
src/skills/error-handling-patterns/SKILL.md
Versions recorded
3
Latest version
git:20260911.17eca4f, committed Sep 11, 2026
First version recorded
Jun 3, 2026
Size
9,067 bytes
Repository stars
19
License
MIT

Use when picking a failure-reporting strategy — exceptions vs Result types, recoverable vs not, retry / circuit-breaker / graceful degradation — decision framework only, catalogues externalized.

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-patterns

Decision framework for picking an error-handling strategy. **Catalogues of language-specific code live upstream** (links in § Provenance) — this skill is the predicate, not the pattern library. Sunset-policy compliant: large language-specific catalogues stay in authoritative upstream docs.

## When to use

- Designing how a new feature, API, or service reports failure.
- Reviewing a diff that introduces a new exception class, `Result<T, E>`, or sentinel return.
- Debugging production noise that traces back to inconsistent error semantics.
- Choosing between retry, circuit-breaker, fallback, and fail-fast for an external dependency.

Do NOT use when:

- You only need the syntax for a `try/catch` in language X — read the upstream language guide directly.
- The failure is a single-call Laravel validation error — route to [`laravel-validation`](../laravel-validation/SKILL.md).
- The fix is a one-line null check in existing code — route to [`bug-analyzer`](../bug-analyzer/SKILL.md).

## Decision framework

### Step 1 — Classify the failure

```
Failure is:
  caller's fault (bad input, missing auth)         → reject at boundary, structured error
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add event4u-app/agent-config/error-handling-patterns@sha256:7f15553fd26d5d09

The line at the top of this page pins the label git:20260911.17eca4f, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_uw4bmk2uyhdl2jto.svg)](https://markdownregistry.com/a/art_uw4bmk2uyhdl2jto)

7 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Jun 3, 2026 and Sep 11, 2026, about one every 50 days.

versioncommittedcommitsizeaudit
git:20260911.17eca4f latest2026-09-11 17eca4f 9,067 BA view · diff
git:20260613.32486112026-06-13 3248611 7,687 BA view · diff
git:20260603.668ed882026-06-03 668ed88 7,775 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9067 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

GitHub

event4u-app/agent-config · 19 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_uw4bmk2uyhdl2jto
GET https://markdownregistry.com/api/v1/resolve?ref=event4u-app/agent-config/error-handling-patterns
GET https://markdownregistry.com/api/v1/blob/7f15553fd26d5d092fe5b6ed2385bcbb2ae76911d8026c98e5a27cbed7475cc3

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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