systematic-debugging SKILL.md skillA

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

Install it, pinned
mdr add ganyuanran/aegis/systematic-debugging@git:20261025.21787f7

Pins git:20261025.21787f7 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ganyuanran/aegis
Path
skills/systematic-debugging/SKILL.md
Versions recorded
9
Latest version
git:20261025.21787f7, committed Oct 25, 2026
First version recorded
Aug 30, 2026
Size
11,955 bytes
Repository stars
1,417
License
MIT

Use when encountering a bug, test failure, or unexpected behavior, before proposing fixes.

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

# Execute

Bug, failure, or unexpected behavior:

1. **Isolate** — read error, reproduce, inspect the diff, and drill upward through diagnostic layers:
   L1 symptom → L2 logic → L3 system → L4 architecture → L5 cross-system
   contract → L6 platform → L7 spec gap. Layers are observation altitudes,
   not one causal chain; the causal shape at the stop altitude is classified
   explicitly before any root claim. Stop only when causal proof accounts
   for the recurrence generator or reaches a T-class boundary.
2. **Identify owner** — compare working behavior, trace the bad value, locate the
   canonical owner, and treat duplicate owners as a finding.
3. **Decide before editing** — Before fixing, run Patch-Shape Triage and Ripple Signal Triage when shared logic,
   contracts, fallbacks, adapters, producer/consumer seams, or source-of-truth
   boundaries are involved. Surface Change Necessity for any new source-code
   path or non-trivial source edit. Run Minimality Check for a new branch,
   fallback, adapter, owner, or compatibility path, and Pre-Edit Complexity
   Check for an overloaded owner or complexity growth. After Change Necessity
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ganyuanran/aegis/systematic-debugging@sha256:2e3ec13acce3dd8b

The line at the top of this page pins the label git:20261025.21787f7, 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_foxwtktvgnwveupy.svg)](https://markdownregistry.com/a/art_foxwtktvgnwveupy)

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

Versions

The registry has recorded 9 versions of this file, between Aug 30, 2026 and Oct 25, 2026, about one every 7 days.

versioncommittedcommitsizeaudit
git:20261025.21787f7 latest2026-10-25 21787f7 11,955 BA view · diff
git:20261020.2ff21fc2026-10-20 2ff21fc 11,627 BA view · diff
git:20261011.d34934a2026-10-11 d34934a 11,381 BA view · diff
git:20261001.ed3a0a72026-10-01 ed3a0a7 11,089 BA view · diff
git:20260907.f725a762026-09-07 f725a76 10,874 BA view · diff
git:20260907.a9476842026-09-07 a947684 12,105 BA view · diff
git:20260901.44ac08f2026-09-01 44ac08f 11,791 BA view · diff
git:20260901.e71b85a2026-09-01 e71b85a 11,697 BA view · diff
git:20260830.8e0cee32026-08-30 8e0cee3 11,523 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 (11955 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

ganyuanran/aegis · 1,417 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_foxwtktvgnwveupy
GET https://markdownregistry.com/api/v1/resolve?ref=ganyuanran/aegis/systematic-debugging
GET https://markdownregistry.com/api/v1/blob/2e3ec13acce3dd8bbfc582e3c85df94b87619b6b32d7a7259df27c1b353c2856

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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