error-handling SKILL.md skillA
error-handling from akaszubski/autonomous-dev is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add akaszubski/autonomous-dev/error-handling@git:20260317.e64d556Pins git:20260317.e64d556 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- akaszubski/autonomous-dev
- Path
plugins/autonomous-dev/skills/error-handling/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260317.e64d556, committed Mar 17, 2026
- Size
- 7,692 bytes
- Repository stars
- 34
- License
- none declared
Error handling strategy — exception hierarchies, retry patterns, circuit breakers, graceful degradation, and error boundaries. Use when designing error handling, implementing retries, or building resilient systems. TRIGGER when: error handling, exception, retry, circuit breaker, fallback, graceful degradation, resilience. DO NOT TRIGGER when: writing tests, documentation, config changes, simple bug fixes.
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 for building resilient Python systems. Focus on recoverability, not just catching exceptions.
## Core Principle
**Handle what you can recover from. Propagate what you can't. Never swallow errors silently.**
## Exception Hierarchy
Design exceptions that help the caller decide what to do.
```python
class AppError(Exception):
"""Base for all application errors. Always catchable as a group."""
class ConfigError(AppError):
"""Configuration is invalid or missing. Not retryable."""
class ExternalServiceError(AppError):
"""External dependency failed. May be retryable."""
class RateLimitError(ExternalServiceError):
"""Rate limit hit. Retryable after delay."""
def __init__(self, message: str, retry_after: float = 60.0):
super().__init__(message)
self.retry_after = retry_after
class ValidationError(AppError):
"""Input data is invalid. Not retryable without fixing input."""
def __init__(self, message: str, field: str | None = None):
super().__init__(message)
self.field = field
```
### Rules
- **One base exception per library/package** — callers can catch everything with one class
…Read the whole file at its exact version.
How to install
mdr add akaszubski/autonomous-dev/error-handling@sha256:8b473df24c805591The line at the top of this page pins the label git:20260317.e64d556, 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_cnldnrbb5zqqnurn)
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Versions
The registry has recorded 1 version of this file, committed on Mar 17, 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 (7692 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
akaszubski/autonomous-dev · 34 stars · license none declared · pushed 2026-10-04 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_cnldnrbb5zqqnurn GET https://markdownregistry.com/api/v1/resolve?ref=akaszubski/autonomous-dev/error-handling GET https://markdownregistry.com/api/v1/blob/8b473df24c805591d42840886d377e56325ee27bf47a0258fff4c1ca9b2c7917
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.
More from akaszubski/autonomous-dev
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