nulnul-harness SKILL.md skillA
nulnul-harness from seonaru/nulnul-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add seonaru/nulnul-harness/nulnul-harness@git:20260910.59d366fPins git:20260910.59d366f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- seonaru/nulnul-harness
- Path
plugins/nulnul-harness/skills/nulnul-harness/SKILL.md- Versions recorded
- 6
- Latest version
- git:20260910.59d366f, committed Sep 10, 2026
- First version recorded
- Sep 2, 2026
- Size
- 7,637 bytes
- Repository stars
- 34
- License
- MIT
Set up, inspect, or resume a project-local harness. Use for explicit harness requests, recurring work missing a usable contract, or measured capability failures. Skip ordinary edits and unrelated questions already covered by local instructions.
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
# nulnul harness Complete the user's requested outcome with the strongest justified capability path. Quality comes first; simplicity breaks ties between materially equivalent outcomes. The user should not need to operate the harness. ## Start with the current task Inspect a user-named task contract such as `TASK.md` before activating. If the existing inputs, outputs, constraints and runnable check already cover an ordinary task, work directly: read the relevant files, make the change, run the applicable check, inspect the result and fix attributable failures. Answer a covered read-only question directly. Do not initialize setup, enumerate capabilities or load evolution procedures for that work. An explicit harness setup request is actionable even in an existing project; use the setup route below. Ask only for a material product or permission decision that safe inspection cannot resolve. Continue the original task after setup. …
Read the whole file at its exact version.
How to install
mdr add seonaru/nulnul-harness/nulnul-harness@sha256:06be606666d52af8The line at the top of this page pins the label git:20260910.59d366f, 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_b4b6msqqipyta4fr)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Sep 2, 2026 and Sep 10, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.59d366f latest | 2026-09-10 | 59d366f | 7,637 B | A | view · diff |
| git:20260908.a9fd59e | 2026-09-08 | a9fd59e | 35,297 B | A | view · diff |
| git:20260908.747d490 | 2026-09-08 | 747d490 | 34,794 B | A | view · diff |
| git:20260908.3047a84 | 2026-09-08 | 3047a84 | 33,793 B | A | view · diff |
| git:20260908.e80c9bf | 2026-09-08 | e80c9bf | 33,587 B | A | view · diff |
| git:20260902.749d57b | 2026-09-02 | 749d57b | 33,213 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 (7637 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
seonaru/nulnul-harness · 34 stars · license MIT · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_b4b6msqqipyta4fr GET https://markdownregistry.com/api/v1/resolve?ref=seonaru/nulnul-harness/nulnul-harness GET https://markdownregistry.com/api/v1/blob/06be606666d52af8cf14fc026c65d56345baad131f4242eabb0767865ff89c6d
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.