systematic-debugging SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

systematic-debugging from khaledsaeed18/dotclaude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add khaledsaeed18/dotclaude/systematic-debugging@git:20260921.3a2f779

Pins git:20260921.3a2f779 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
khaledsaeed18/dotclaude
Path
skills/engineering/systematic-debugging/SKILL.md
Versions recorded
3
Latest version
git:20260921.3a2f779, committed Sep 21, 2026
First version recorded
Jun 9, 2026
Size
5,430 bytes
Repository stars
5
License
MIT

Debug a bug, test failure, crash, or unexpected behaviour by finding the root cause before changing anything, instead of guessing at fixes. Works in any language or stack. Use when something is broken, a test is failing, behaviour is wrong, or a previous fix didn't hold.

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

Find the root cause before you touch a line of code. A fix that targets a symptom you don't understand either fails or moves the bug somewhere else, and each blind attempt makes the next one harder to reason about. Investigation first is not the slow path; it is the fast one.

## The one rule

**No fix before you can name the root cause.** If you can't say "the bug happens because X", you are still investigating, not fixing. The moment you feel "let me just try changing this and see": stop. That instinct is the thing this skill exists to interrupt.

This holds hardest exactly when it feels most skippable: under time pressure, when the bug "looks simple", when you've already tried two things. Simple bugs have root causes too, and guess-and-check is slower than it feels because every wrong attempt has to be unwound.

## Step 1: Investigate the root cause

Do all of this before forming any fix.

- **Read the actual error.** The full message, the full stack trace, line numbers, error codes. The answer is often already written there. Don't skim past it to the part you assume is the problem.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add khaledsaeed18/dotclaude/systematic-debugging@sha256:ce3e1901780c0f6f

The line at the top of this page pins the label git:20260921.3a2f779, 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_jt2sfnx4p5jhb42a.svg)](https://markdownregistry.com/a/art_jt2sfnx4p5jhb42a)

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

Versions

The registry has recorded 3 versions of this file, between Jun 9, 2026 and Sep 21, 2026, about one every 52 days.

versioncommittedcommitsizeaudit
git:20260921.3a2f779 latest2026-09-21 3a2f779 5,430 BA view · diff
git:20260921.6c17ffd2026-09-21 6c17ffd 5,141 BA view · diff
git:20260609.13bdd5a2026-06-09 13bdd5a 5,177 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 (5430 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

khaledsaeed18/dotclaude · 5 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_jt2sfnx4p5jhb42a
GET https://markdownregistry.com/api/v1/resolve?ref=khaledsaeed18/dotclaude/systematic-debugging
GET https://markdownregistry.com/api/v1/blob/ce3e1901780c0f6f5e98c68f9aa143cd3b33cbb7dc3eb6d89784d632baa04662

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.

More from khaledsaeed18/dotclaude

improve SKILL.md skill
khaledsaeed18/dotclaude · .agents/skills/improve/SKILL.md · Survey any codebase as a senior advisor and produce prioritized, self-contained implementation plans for OTHER…
v1.0.0 · audit B · 5 stars
coolify-image-app SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/coolify-image-app/SKILL.md · Create and configure a Coolify application that runs a prebuilt image from a registry. Use when adding an app to…
git:20261005.5100bf0 · audit A · 5 stars
coolify-vps-baseline SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/coolify-vps-baseline/SKILL.md · Prepare a Linux VPS to run production containers under Coolify. Use when setting up a new server, auditing an existing…
git:20261005.5100bf0 · audit A · 5 stars
deploy-verification SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/deploy-verification/SKILL.md · Prove a deployment from the server side. Use when a deploy finished and needs sign-off, when a rolling update may have…
git:20261005.5100bf0 · audit A · 5 stars
express-prisma-coolify-image SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/express-prisma-coolify-image/SKILL.md · Package an Express and Prisma API as a runtime-only image that migrates its Postgres database at start. Use when…
git:20261005.5100bf0 · audit A · 5 stars
ghcr-coolify-pipeline SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/ghcr-coolify-pipeline/SKILL.md · Write the single GitHub Actions workflow that takes a repository from pull request to production through GHCR and…
git:20261005.5100bf0 · audit A · 5 stars
live-domain-cutover SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/live-domain-cutover/SKILL.md · Move a live domain from one host to another without downtime or lost sessions, with a rehearsal, a timed DNS switch, a…
git:20261005.5100bf0 · audit A · 5 stars
nextjs-coolify-image SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/nextjs-coolify-image/SKILL.md · Package a Next.js app as a runtime-only container image with a health probe and a fast shutdown. Use when…
git:20261005.5100bf0 · audit A · 5 stars
proxy-client-address SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/proxy-client-address/SKILL.md · Forward the real client address from a server-side proxy to a backend without trusting forgeable headers. Use when an…
git:20261005.5100bf0 · audit A · 5 stars
vps-ops-toolkit SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/deploy/skills/vps-ops-toolkit/SKILL.md · Install host operations on a VPS, with a cron health check that alerts on change, restore-verified encrypted database…
git:20261005.5100bf0 · audit A · 5 stars
adr-writing SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/docs/skills/adr-writing/SKILL.md · Write Architecture Decision Records that a future engineer can act on: a numbered, immutable record with the context…
git:20260921.b628018 · audit A · 5 stars
openapi-spec SKILL.md skill
khaledsaeed18/dotclaude · .claude-plugin/plugins/docs/skills/openapi-spec/SKILL.md · Write, generate, or review an OpenAPI 3.1 specification for an HTTP API so that it is accurate to the implementation…
git:20260921.b628018 · audit A · 5 stars

Every file in khaledsaeed18/dotclaude

Other files named systematic-debugging

systematic-debugging SKILL.md skill
obra/superpowers · skills/systematic-debugging/SKILL.md · Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
git:20261010.bb92a77 · audit A · 314,583 stars
systematic-debugging SKILL.md skill
mvschwarz/openrig · skills/_canonical/process/systematic-debugging/SKILL.md · Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
git:20261025.a37e271 · audit A · 8,636 stars
systematic-debugging SKILL.md skill
mvschwarz/openrig · packages/daemon/specs/agents/shared/skills/process/systematic-debugging/SKILL.md · Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
git:20261025.a37e271 · audit A · 8,636 stars
systematic-debugging SKILL.md skill
jnmetacode/superpowers-zh · skills/systematic-debugging/SKILL.md · 遇到任何 bug、测试失败或异常行为时使用,在提出修复方案之前执行
v1.0.0 · audit A · 8,494 stars
systematic-debugging SKILL.md skill
cbrock84/headcount · plugins/technology/skills/systematic-debugging/SKILL.md · Finds the root cause of a bug, test failure, or unexpected behavior before proposing any fix. Use this whenever…
git:20260901.aa45383 · audit A · 2,543 stars
systematic-debugging SKILL.md skill
a5c-ai/babysitter · library/methodologies/superpowers/skills/systematic-debugging/SKILL.md · Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes. Requires root cause…
git:20260601.da7723a · audit A · 1,896 stars
systematic-debugging SKILL.md skill
a5c-ai/babysitter · library/methodologies/rpikit/skills/systematic-debugging/SKILL.md · Structured debugging methodology using hypothesis-driven investigation, log analysis, and bisection to isolate and…
git:20260605.09bdbf7 · audit A · 1,896 stars
systematic-debugging SKILL.md skill
ganyuanran/aegis · skills/systematic-debugging/SKILL.md · Use when encountering a bug, test failure, or unexpected behavior, before proposing fixes
git:20261025.21787f7 · audit A · 1,424 stars

Browse by kind, by grade A, or by owner.