sentinel-design skillA
sentinel-design is agent-read markdown (skill) from habitat-thinking/ai-literacy-superpowers: 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.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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@git:20260823.6a0963emdr add habitat-thinking/ai-literacy-superpowers/sentinel-design@sha256:ecc444a4c3ec8f8aPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_t73yzqf4yfx3t3ra)
1 badge views in 30 days
Versions
| 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 · 106 stars · license NOASSERTION · pushed 2026-09-20 · 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 agent 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.