principle-error-handling SKILL.md skillA
principle-error-handling from lugassawan/swe-workbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add lugassawan/swe-workbench/principle-error-handling@git:20260828.71a6399Pins git:20260828.71a6399 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- lugassawan/swe-workbench
- Path
skills/principle-error-handling/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260828.71a6399, committed Aug 28, 2026
- First version recorded
- Apr 30, 2026
- Size
- 6,869 bytes
- Repository stars
- 3
- License
- MIT
Error handling principles — errors as values vs exceptions, wrapping and context chains, retry with exponential backoff and jitter, circuit breakers and bulkheads, log-once boundary discipline. Auto-load when discussing errors as values, retry, exponential backoff, jitter, fail fast, fail soft, idempotent retry, error wrapping, or deadlines.
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
<!-- preload-canary: SWB-PRELOAD-PRINCIPLE-ERROR-HANDLING --> # Error Handling Errors are part of the contract. Handling them is not defensive programming — it is the design. ## Errors as Values vs Exceptions Use the language's native error style; don't fight it. - **Go** `error` values, **Rust** `Result<T, E>`, **TypeScript** typed unions: errors are explicit return paths, visible in signatures, handled by callers. - Exceptions (Java, Python, C#) work best for truly unexpected conditions — programmer errors, not business failures. - Reserve `panic` / `throw` / unchecked exceptions for unrecoverable programmer errors. Expected failures (network timeout, not found) must be value-level errors. ## Classify Before Handling Not all errors deserve the same response. - **Transient** — network blip, timeout, lock contention: retry with backoff (fail soft — degrade gracefully while recovering). - **Permanent** — bad input, not found, permission denied: fail fast — surface immediately to the caller, never retry. - **Programmer** — nil deref, index out of bounds, invariant violated: panic/crash, fix the code. …
Read the whole file at its exact version.
How to install
mdr add lugassawan/swe-workbench/principle-error-handling@sha256:efcc8b3262e20159The line at the top of this page pins the label git:20260828.71a6399, 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_gpaedi7kg6hy27bz)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 30, 2026 and Aug 28, 2026, about one every 30 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.71a6399 latest | 2026-08-28 | 71a6399 | 6,869 B | A | view · diff |
| git:20260811.925e30f | 2026-08-11 | 925e30f | 7,043 B | A | view · diff |
| git:20260725.074b496 | 2026-07-25 | 074b496 | 7,029 B | A | view · diff |
| git:20260612.cf41a19 | 2026-06-12 | cf41a19 | 6,967 B | A | view · diff |
| git:20260430.3fbf667 | 2026-04-30 | 3fbf667 | 6,744 B | A | view |
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 (6869 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
lugassawan/swe-workbench · 3 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gpaedi7kg6hy27bz GET https://markdownregistry.com/api/v1/resolve?ref=lugassawan/swe-workbench/principle-error-handling GET https://markdownregistry.com/api/v1/blob/efcc8b3262e20159830a4481b05660c956c91c42674074e8d3132ae9fd029eac
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.