harness-authoring SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 4 indexed copies. Same content hash, so the same checks give both the same grade.

harness-authoring from jakeselby/model-citizen is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add jakeselby/model-citizen/harness-authoring@git:20260928.ca93e6d

Pins git:20260928.ca93e6d in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

jakeselby/model-citizen

Path

directory/model-citizen/primitives/skills/harness-authoring/SKILL.md

Versions recorded

1

Latest version

git:20260928.ca93e6d, committed Sep 28, 2026

Size

8,103 bytes

Repository stars

24

License

MIT

Decide where an instruction belongs and write it there, then sync and lint. Use when asked to add, change or remove a rule, skill, instruction, hook, setting or CLAUDE.md line, to "remember" something that should persist beyond this session, or when a correction should apply to future sessions.

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

# Harness authoring

Every instruction has exactly one right home. This skill finds it, writes there, and keeps the
harness checkout as the source of truth for everything generic.

## Find the checkout and the caller

```bash
python3 - <<'EOF'
import json, pathlib
m = json.load(open(pathlib.Path.home() / ".local/state/agent-harness/manifest.json"))
print(m["repo"])
EOF
git -C "$(…)" remote -v
```

If the manifest is missing, locate or install the harness before editing managed content.
Do not create a second authority in a runtime configuration directory. If `origin` is a fork and `upstream` is the
harness, you are a **fork user**. Otherwise, if `origin` is `<owner>/model-citizen`, or `<owner>/agent-harness` from
before the rename, and you are that owner, you are the **maintainer**.

## The ladder — first match wins

1. **Must run at a lifecycle point regardless of the model's judgment** (a check before every
   commit, a validator after every write) → a shared policy under `policy/hooks/`, dispatched by
   `lib/harness_core/lifecycle.py`; native registrations belong in runtime adapters.
…

Read the whole file at its exact version.

How to install

mdr add jakeselby/model-citizen/harness-authoring@sha256:a4976af28a77cae7

[![mdr](https://markdownregistry.com/badge/art_6evvoif72goqukxc.svg)](https://markdownregistry.com/a/art_6evvoif72goqukxc)

Versions

The registry has recorded 1 version of this file, committed on Sep 28, 2026.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_6evvoif72goqukxc
GET https://markdownregistry.com/api/v1/resolve?ref=jakeselby/model-citizen/harness-authoring
GET https://markdownregistry.com/api/v1/blob/a4976af28a77cae7e94565e6edc82b3ce3932ea95eba90022780416f777a98e2

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.

More from jakeselby/model-citizen

Every file in jakeselby/model-citizen

Other files named harness-authoring

Browse by kind, by grade A, or by owner.