codex-implement SKILL.md skillA
codex-implement 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-implement@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-implement/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260905.3d84d94, committed Sep 5, 2026
- First version recorded
- Mar 5, 2026
- Size
- 34,958 bytes
- Repository stars
- 194
- License
- MIT
Implement features via Codex exec. Use when: writing new code from specs, implementing features, Codex-driven development. Not for: code review (use codex-code-review), architecture advice (use codex-architect). Output: implemented code + review loop.
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 Implement Skill
## Trigger
- Keywords: codex implement, implement feature, codex write code, implement from spec
## When NOT to Use
- Architecture advice only (use `/codex-architect`)
- Code review (use `/codex-review-fast`)
- Bug fix (use `/bug-fix`)
- Simple one-line change (edit directly)
## Workflow
```
Parse args → Decompose → Collect context → Iterate items → Review loop → Done
↕
codex → diff → confirm
↕
reject/modify → § Resume
```
### Step 0: Pre-check and precondition (before any repository read)
**The index must carry no `assume-unchanged` / `skip-worktree` path before anything is dispatched**
— under the two grants this skill holds, `Bash(git:*)` and `Bash(node:*)`, and no others:
```bash
node -e '
const { execSync } = require("child_process");
// The REPOSITORY, not the invocation directory. `git ls-files` is path-limited to the cwd
// subtree, so running this from `skills/` would inspect a fraction of the index and report a
…Read the whole file at its exact version.
How to install
mdr add sd0xdev/sd0x-harness/codex-implement@sha256:7d3a2e7b74d0dd80The 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_rdnhjj4nt73cnmgc)
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 | 34,958 B | A | view · diff |
| git:20260905.1599675 | 2026-09-05 | 1599675 | 5,162 B | A | view · diff |
| git:20260321.4a2afd0 | 2026-03-21 | 4a2afd0 | 4,807 B | A | view · diff |
| git:20260305.681596c | 2026-03-05 | 681596c | 4,800 B | A | view · diff |
| git:20260305.3ae8b92 | 2026-03-05 | 3ae8b92 | 4,769 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 (34958 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_rdnhjj4nt73cnmgc GET https://markdownregistry.com/api/v1/resolve?ref=sd0xdev/sd0x-harness/codex-implement GET https://markdownregistry.com/api/v1/blob/7d3a2e7b74d0dd80ca5d31d153332347993b835ad6808e25e5053ba627288d6f
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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