debug SKILL.md skillA

debug from univers42/claude-deal-with-the-devil is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add univers42/claude-deal-with-the-devil/debug@git:20260930.5b26a1e

Pins git:20260930.5b26a1e in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
univers42/claude-deal-with-the-devil
Path
skills/debug/SKILL.md
Versions recorded
5
Latest version
git:20260930.5b26a1e, committed Sep 30, 2026
First version recorded
Sep 20, 2026
Size
4,934 bytes
Repository stars
4
License
none declared

Find the actual cause of a failure instead of guessing at fixes. Use when a test fails, a build breaks, a crash has no obvious cause, behaviour differs between machines, or a fix that worked yesterday stopped working. Auto-triggers on: "why is this failing", "debug this", "this test is flaky", "it works locally", "fix this bug", "this crashes".

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

# Debug

The expensive failure mode is changing code until the symptom disappears. That does not
remove the bug; it moves it. You are done when you can **explain the mechanism** and
**turn the failure on and off on demand**.

## 1. Reproduce — a bug you cannot trigger, you cannot fix

- Get the exact command, input, and environment. Run it yourself under
  `devil watch` so a hang is killed with a reason (exit 124), not waited on.
- Record the real, complete error: the message, the stack, the exit code. Not a summary.
- **Cannot reproduce?** That is the finding. Say so and collect what is missing —
  version, platform, data, timing, concurrency. Do not "fix" an unreproduced bug.
- Flaky? Run it 20 times and report the rate (`3/20`). A rate is a fact; "sometimes" is
  not, and the rate is how you will know you fixed it.

## 2. Narrow — halve the search space, don't tour it

Pick the cheapest axis available and bisect it:

- **In time** — `git bisect run <cmd>` when it used to work. This is the single
  highest-value debugging tool and it is consistently the one skipped.
- **In input** — delete half the input; still fails? delete half again. Land on the
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add univers42/claude-deal-with-the-devil/debug@sha256:44ed147eaab1b266

The line at the top of this page pins the label git:20260930.5b26a1e, 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_pzijlyo65uzeoqly.svg)](https://markdownregistry.com/a/art_pzijlyo65uzeoqly)

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

Versions

The registry has recorded 5 versions of this file, between Sep 20, 2026 and Sep 30, 2026, about one every 2 days.

versioncommittedcommitsizeaudit
git:20260930.5b26a1e latest2026-09-30 5b26a1e 4,934 BA view · diff
git:20260930.a77cb5e2026-09-30 a77cb5e 4,861 BA view · diff
git:20260930.445fa692026-09-30 445fa69 4,820 BA view · diff
git:20260930.69f56242026-09-30 69f5624 4,864 BA view · diff
git:20260920.16937ef2026-09-20 16937ef 4,625 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 (4934 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

univers42/claude-deal-with-the-devil · 4 stars · license none declared · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_pzijlyo65uzeoqly
GET https://markdownregistry.com/api/v1/resolve?ref=univers42/claude-deal-with-the-devil/debug
GET https://markdownregistry.com/api/v1/blob/44ed147eaab1b266ea1e0aadf1e73666d933aa724dfc4da42f966ca0bbce45c3

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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doc-sync SKILL.md skill
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