learn-from-fix SKILL.md skillA

learn-from-fix from oliver-kriska/claude-elixir-phoenix is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add oliver-kriska/claude-elixir-phoenix/learn-from-fix@git:20260929.c08ad14

Pins git:20260929.c08ad14 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
oliver-kriska/claude-elixir-phoenix
Path
plugins/elixir-phoenix/skills/learn-from-fix/SKILL.md
Versions recorded
6
Latest version
git:20260929.c08ad14, committed Sep 29, 2026
First version recorded
Mar 21, 2026
Size
7,100 bytes
Repository stars
573
License
MIT

Capture Elixir/Ecto/LiveView lessons and Hex API rules. Use after corrections or when asked to document learning, record a lesson, prevent a fixed mistake, or remember package guidance with --library.

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

# Learn From Fix

After fixing a bug or receiving a correction, capture the lesson
to prevent future mistakes.

## Usage

```
/phx:learn-from-fix Fixed N+1 query in user listing - was missing preload
/phx:learn-from-fix String vs atom key mismatch in params handling
/phx:learn-from-fix LiveView assign_async needs render_async in tests
/phx:learn-from-fix --library ical --scope personal ICal.to_ics output needs CRLF line endings
/phx:learn-from-fix --library ical --scope project Use method: "PUBLISH" for calendar feeds
```

## Workflow

### Step 1: Verify the Lesson

Persist only one of:

- A completed fix verified by tests, reproduction, or user confirmation
- An explicit rule the user taught or asked to save

Stop without writing if neither condition is met.
Do not save a hypothesis, unverified workaround, investigation narrative, or
unsolved error. Use `/phx:compound` for a detailed completed investigation.
Capture the root cause as a concise actionable rule, not the symptom.

### Step 2: Select the Route

When both `--library <package>` and `--scope personal|project` are present,
use the [Library Route](#library-route). Require both flags; do not guess scope.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add oliver-kriska/claude-elixir-phoenix/learn-from-fix@sha256:ce25f0089ecf0177

The line at the top of this page pins the label git:20260929.c08ad14, 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_oduaemridhifknw3.svg)](https://markdownregistry.com/a/art_oduaemridhifknw3)

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

Versions

The registry has recorded 6 versions of this file, between Mar 21, 2026 and Sep 29, 2026, about one every 38 days.

versioncommittedcommitsizeaudit
git:20260929.c08ad14 latest2026-09-29 c08ad14 7,100 BA view · diff
git:20260724.918f8092026-07-24 918f809 7,179 BA view · diff
git:20260722.dc230a32026-07-22 dc230a3 7,183 BA view · diff
git:20260401.f2ab67a2026-04-01 f2ab67a 3,081 BA view · diff
git:20260325.d20c8dd2026-03-25 d20c8dd 3,232 BA view · diff
git:20260321.4e9d9e92026-03-21 4e9d9e9 2,817 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 (7100 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

oliver-kriska/claude-elixir-phoenix · 573 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_oduaemridhifknw3
GET https://markdownregistry.com/api/v1/resolve?ref=oliver-kriska/claude-elixir-phoenix/learn-from-fix
GET https://markdownregistry.com/api/v1/blob/ce25f0089ecf017755813f89e26906908bc2543789e25a1610f6fd79e807f8b7

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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