codex-explain SKILL.md skillA
codex-explain 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/codex-explain@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/codex-explain/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260905.3d84d94, committed Sep 5, 2026
- First version recorded
- Mar 5, 2026
- Size
- 2,256 bytes
- Repository stars
- 194
- License
- MIT
Explain complex code via Codex exec. Use when: understanding complex logic, tracing data flow, onboarding to unfamiliar code. Not for: code review (use codex-code-review), exploration (use code-explore). Output: structured explanation at chosen depth.
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
# Codex Explain Skill ## Trigger - Keywords: explain code, what does this do, how does this work, code walkthrough ## When NOT to Use - Code review (use `codex-code-review`) - Bug investigation (use `bug-fix` or `issue-analyze`) - Architecture overview (use `code-explore`) ## Workflow ``` Read target → [Collect context] → Codex explain → Output explanation ``` ### Step 1: Read Target File Read file content. If `--lines` specified, extract only that range. ### Step 2: Codex Explanation Dispatch per `@skills/codex-code-review/references/codex-transport.md` § Start with the explanation prompt. See `references/codex-prompt-explain.md`. ## Depth Levels | Level | Description | | ------ | ---------------------------------------------------- | | brief | One-sentence summary | | normal | Functional overview + execution flow + key concepts (default) | | deep | + Design patterns + complexity + issues + dependencies | ## Output ```markdown ## Code Explanation: <target> - **Depth**: brief / normal / deep - **Summary**: <functional overview> - **Execution flow**: <key paths> …
Read the whole file at its exact version.
How to install
mdr add sd0xdev/sd0x-harness/codex-explain@sha256:029ccb6482429018The 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_vtitsvbeowcrtjff)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Mar 5, 2026 and Sep 5, 2026, about one every 61 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260905.3d84d94 latest | 2026-09-05 | 3d84d94 | 2,256 B | A | view · diff |
| git:20260309.0aecf29 | 2026-03-09 | 0aecf29 | 2,277 B | A | view · diff |
| git:20260305.3ae8b92 | 2026-03-05 | 3ae8b92 | 2,276 B | A | view · diff |
| git:20260305.f26c5ce | 2026-03-05 | f26c5ce | 1,899 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 (2256 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_vtitsvbeowcrtjff GET https://markdownregistry.com/api/v1/resolve?ref=sd0xdev/sd0x-harness/codex-explain GET https://markdownregistry.com/api/v1/blob/029ccb6482429018c131191ecc28f00ad385d22521ef7421d2cc90852c22c844
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.