code-investigate SKILL.md skillA
code-investigate from sd0xdev/sd0x-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sd0xdev/sd0x-harness/code-investigate@git:20260905.3d84d94Pins git:20260905.3d84d94 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sd0xdev/sd0x-harness
- Path
skills/code-investigate/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260905.3d84d94, committed Sep 5, 2026
- First version recorded
- Mar 5, 2026
- Size
- 6,470 bytes
- Repository stars
- 194
- License
- MIT
Dual-perspective code investigation. Use when: deep code analysis needing both Claude and Codex perspectives. Not for: quick exploration (use code-explore), code review (use codex-code-review). Output: integrated findings from dual analysis.
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
# Code Investigate Skill
## Trigger
- Keywords: investigate code, how feature works, trace implementation, dual confirmation, deep dive, how code works, what this code does, code research
## When NOT to Use
- Just need quick lookup (use Grep/Glob directly)
- Code review (use codex-review)
- System verification (use feature-verify)
- Git history tracking (use git-investigate)
## Core Principle
```
Codex must explore independently. Feeding Claude's conclusions to Codex is prohibited.
```
```
┌─────────────────┐ ┌─────────────────┐
│ Claude Explores │ │ Codex Explores │
│ Independently │ │ Independently │
│ (Phase 1-2) │ │ (Phase 3) │
└────────┬────────┘ └────────┬────────┘
│ │
▼ ▼
┌───────────┐ ┌───────────┐
│ Claude │ │ Codex │
│ Conclusion│ │ Conclusion│
└─────┬─────┘ └─────┬─────┘
│ │
└───────────┬───────────┘
▼
┌─────────────┐
│ Consolidated│
│ Report │
│ (Phase 4) │
…Read the whole file at its exact version.
How to install
mdr add sd0xdev/sd0x-harness/code-investigate@sha256:8acc18832ca9af86The line at the top of this page pins the label git:20260905.3d84d94, 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_npfrx3t454uvup6t)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Mar 5, 2026 and Sep 5, 2026, about one every 46 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260905.3d84d94 latest | 2026-09-05 | 3d84d94 | 6,470 B | A | view · diff |
| git:20260319.7b83b52 | 2026-03-19 | 7b83b52 | 6,049 B | A | view · diff |
| git:20260305.3ae8b92 | 2026-03-05 | 3ae8b92 | 6,017 B | A | view · diff |
| git:20260305.37d4591 | 2026-03-05 | 37d4591 | 5,697 B | A | view · diff |
| git:20260305.c56d819 | 2026-03-05 | c56d819 | 5,196 B | A | view |
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 (6470 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
sd0xdev/sd0x-harness · 194 stars · license MIT · pushed 2026-10-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_npfrx3t454uvup6t GET https://markdownregistry.com/api/v1/resolve?ref=sd0xdev/sd0x-harness/code-investigate GET https://markdownregistry.com/api/v1/blob/8acc18832ca9af8651c59569f9230ee28615ee65260b3409de2f3c3ab623634e
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.