sentinel-design SKILL.md skillA
sentinel-design from habitat-thinking/ai-literacy-superpowers is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add habitat-thinking/ai-literacy-superpowers/sentinel-design@git:20260823.6a0963ePins git:20260823.6a0963e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- habitat-thinking/ai-literacy-superpowers
- Path
ai-literacy-superpowers/skills/sentinel-design/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260823.6a0963e, committed Aug 23, 2026
- First version recorded
- Jul 20, 2026
- Size
- 15,525 bytes
- Repository stars
- 121
- License
- a license file GitHub does not identify
Use when designing, reviewing, or classifying an agent that guards the human — defines the sentinel category, the three-part signature (S1 read-only, S2 advisory-to-human, S3 explicit honesty rule), the near-miss gallery that explains why read-only-plus-advisory is not sufficient, the honesty-rule-before-detection-logic discipline, and the three anti-patterns that eject an agent from the category.
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
# Sentinel Design Most agents in this plugin act on an artefact. The spec-writer edits a spec, the tdd-agent writes tests, the integration-agent commits and merges, the harness-gc rewrites stale documentation. Their object of care is a thing in the repository, and you judge them by what they did to that thing. A **sentinel** is different. Its object of care is not the codebase, the pipeline, or the harness — it is **the human**. A sentinel protects and supports the understanding and judgement of the person in the workflow. It informs, challenges, surfaces, or warns. It never fixes, writes, merges, or decides. > **Sentinel** — any agent whose primary purpose is to protect and > support the understanding and judgement of the human in the workflow. The category emerged organically. Four agents — the decision-discipline triad (`carpaccio`, `advocatus-diaboli`, `choice-cartographer`) plus the `reservoir-warden` — and later the `cost-estimator` were all built to the same shape without anyone naming the shape. This skill names it, so that the next one can be built deliberately rather than rediscovered. ## Why sentinels exist: the debts AI moves upstream …
Read the whole file at its exact version.
How to install
mdr add habitat-thinking/ai-literacy-superpowers/sentinel-design@sha256:ecc444a4c3ec8f8aThe line at the top of this page pins the label git:20260823.6a0963e, 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_t73yzqf4yfx3t3ra)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 20, 2026 and Aug 23, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260823.6a0963e latest | 2026-08-23 | 6a0963e | 15,525 B | A | view · diff |
| git:20260813.d867c7c | 2026-08-13 | d867c7c | 15,418 B | A | view · diff |
| git:20260809.8fa0112 | 2026-08-09 | 8fa0112 | 14,867 B | A | view · diff |
| git:20260720.88b52e8 | 2026-07-20 | 88b52e8 | 10,478 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 (15525 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
habitat-thinking/ai-literacy-superpowers · 121 stars · license a license file GitHub does not identify · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_t73yzqf4yfx3t3ra GET https://markdownregistry.com/api/v1/resolve?ref=habitat-thinking/ai-literacy-superpowers/sentinel-design GET https://markdownregistry.com/api/v1/blob/ecc444a4c3ec8f8a3e137646e5a382755d059549615bb844a13465059fe20b24
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.