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fix-regression-guard SKILL.md skillA

fix-regression-guard from the-artificer-of-ciphers-llc/skills-from-the-artificer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add the-artificer-of-ciphers-llc/skills-from-the-artificer/fix-regression-guard@git:20261014.69bca3f

Pins git:20261014.69bca3f in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: the-artificer-of-ciphers-llc/skills-from-the-artificer
Path: fix-regression-guard/SKILL.md
Versions recorded: 1
Latest version: git:20261014.69bca3f, committed Oct 14, 2026
Size: 3,430 bytes
Repository stars: 6
License: MIT

Mandatory regression analysis before committing a bug fix. Use before any fix commit, after any change to a guard, condition, ownership check, or flow-control trigger, or after an agent proposes a fix. Prevents the fix-break-fix cycle by tracing every callsite, actor, and follow-up action that depends on the changed condition, and by escalating to a redesign after repeated review findings.

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

# Fix Regression Guard

Before committing ANY fix, complete this analysis. A common source of new bugs in any codebase is a fix that changes a condition or guard without tracing all code paths that depend on it.

## When to trigger

- Every `fix:` commit
- Every change to a guard, condition, or ownership/permission check
- Every change to flow control (retry triggers, scheduling, reconcile or refresh paths)
- After any agent proposes a fix

## The Analysis

### Step 1: List every condition you changed

For each changed `if`, `guard`, `where`, or boolean check, write (illustrative example from an order service):
- **Before**: `if order.ownerID == DEFAULT_OWNER`
- **After**: `if order.ownerID == resolvedOwnerID`
- **Intent**: Only match the actual owner, not the symbolic default

### Step 2: Find ALL callsites of the changed condition

```bash
# For each changed variable/function, find every reference (names are illustrative)
grep -rn "ownerID\|refreshOrders\|reconcileItems" src/ | grep -v "test"
```

For EACH callsite:
- Does it still work for the **positive** case (condition is true)?
- Does it still work for the **negative** case (condition is false)?
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add the-artificer-of-ciphers-llc/skills-from-the-artificer/fix-regression-guard@sha256:15a11e30a4a6aa09

The line at the top of this page pins the label git:20261014.69bca3f, 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](https://markdownregistry.com/badge/art_4llq6cuzagwrleg4.svg)](https://markdownregistry.com/a/art_4llq6cuzagwrleg4)

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

Versions

The registry has recorded 1 version of this file, committed on Oct 14, 2026.

version	committed	commit	size	audit
git:20261014.69bca3f latest	2026-10-14	69bca3f	3,430 B	A	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 (3430 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

the-artificer-of-ciphers-llc/skills-from-the-artificer · 6 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_4llq6cuzagwrleg4
GET https://markdownregistry.com/api/v1/resolve?ref=the-artificer-of-ciphers-llc/skills-from-the-artificer/fix-regression-guard
GET https://markdownregistry.com/api/v1/blob/15a11e30a4a6aa0914622564e9fe02f75d4c3f574668382d4ba486c7a1c309f4

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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