lh-debugging SKILL.md skillA
lh-debugging from jrodrigopuca/local-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jrodrigopuca/local-agents/lh-debugging@v1.1Pins v1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jrodrigopuca/local-agents
- Path
apple-dev/skills/lh-debugging/SKILL.md- Versions recorded
- 1
- Latest version
- v1.1, committed Oct 14, 2026
- Size
- 5,633 bytes
- Repository stars
- 2
- License
- Apache-2.0
Debugging Apple-platform issues as taught method: crashes, leaks, hangs, and weird behavior — Socratic first, tools named, root cause always. Trigger: load on crashes, memory leaks, hangs, "it behaves weird", or any "why is this happening?" in Swift/iOS/macOS.
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
_Verified against Xcode 26 / iOS 26 / macOS 26 (September 2026). Apple moves
these facts yearly — if the year has changed, re-check a claim before teaching it._
## Critical Patterns
### 1. Debugging is the mentorship's best classroom — guide, don't grab
This is where "teach fishing" pays most: walk them through the METHOD with
Socratic steps ("what EXACTLY does the crash log say?", "what's the last
thing you know is true?"), because debugging skill compounds for life.
Exceptions per the [mentorship ladder](../../AGENTS.md): cryptic
tooling errors (code signing, DerivedData corruption, simulator weirdness)
get the answer straight — reserve the Socratic method for bugs that teach.
### 2. Read the crash before theorizing
Every crash diagnosis starts with the artifact, not the vibes:
| Crash says | It usually means |
|------------|------------------|
| `EXC_BAD_ACCESS` | Accessing freed memory — over-released object, dangling pointer, race |
| `Fatal error: Unexpectedly found nil` | A force unwrap met reality — read WHICH line, ask why the invariant broke |
| `EXC_BREAKPOINT` on a Swift runtime line | Failed precondition: array index, force cast, arithmetic |
…Read the whole file at its exact version.
How to install
mdr add jrodrigopuca/local-agents/lh-debugging@sha256:434aad4784952f07The line at the top of this page pins the label v1.1, 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_l6ajxtkainrhagjz)
2 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.
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 (5633 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
jrodrigopuca/local-agents · 2 stars · license Apache-2.0 · pushed 2026-10-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_l6ajxtkainrhagjz GET https://markdownregistry.com/api/v1/resolve?ref=jrodrigopuca/local-agents/lh-debugging GET https://markdownregistry.com/api/v1/blob/434aad4784952f07edca53a7771b2e75a906e2c3562ad3da4ee123b091f8474d
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.