letter-hooker SKILL.md skillA
letter-hooker from ellmos-ai/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ellmos-ai/skills/letter-hooker@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ellmos-ai/skills
- Path
skills/infrastructure/letter-hooker/SKILL.md- Versions recorded
- 5
- Latest version
- v1.0.0, committed Aug 30, 2026
- First version recorded
- Jul 30, 2026
- Size
- 4,609 bytes
- Repository stars
- 9
- License
- MIT
Erweitert automation-self-care um Letter Hooks, Preflight-Bootloader, Dokument-Traversierungsregeln und selbstheilende Prompt-Kontext- Anreicherung für KI-Agenten und CLIs ohne native, ereignisgetriebene JSON-Lifecycle-Hooks (wie Antigravity / Gemini CLI). Nutzen, wenn ein Agent Preflight-Regeln injizieren, vor Arbeitsbeginn Memory/Gardener durchsuchen, Verzeichnis-Dokument-Lesestrategien erzwingen (CLAUDE.md / AGENTS.md) oder Sidecar-Tasks dynamisch an Skills und Sicherheitsprotokolle routen…
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
<img src="banner.png" width="100%" alt="letter-hooker banner"> # Letter-Hooker (Prompt-Level Preflight & Governance Engine) Der **Letter-Hooker**-Skill erweitert `automation-self-care` für KI-Agenten-Frameworks (wie **Antigravity / Gemini CLI**), die keine nativen, ereignisgetriebenen JSON-Lifecycle-Hook-Loader besitzen (z. B. `~/.claude/settings.json` oder `~/.codex/hooks.json`). Statt sich auf passive Per-Keypress-Hooks zu verlassen, betreibt `letter-hooker` einen **aktiven Prompt-Level-Preflight-Bootloader und Letter-Hook-Injection-Loop** über geplante Tasks und Maintainer-Skripte (`agy_kontext_and_workflow_loader.py`). --- ## Kernfähigkeiten 1. **Preflight-Bootloader & Dokument-Traversierungsregeln**: - **Aufwärts- & Abwärtssuche**: Erzwingt strikte Anweisungen für Agenten, `AGENTS.md`, `CLAUDE.md`, `START.md`, `RULES.md` und `README.md` auf der aktuellen Arbeitsverzeichnis-Ebene zu prüfen. Fehlen sie, aufwärts traversieren, bis gefunden; dann abwärts prüfen. - **Memory- & Gardener-Preflight**: Pflicht-Preflight-Abfrage an `gardener` und `memoryhooker`, bevor destruktive oder komplexe Änderungen ausgeführt werden. 2. **Letter-Hooks-Katalog & Referenz-Links**: …
Read the whole file at its exact version.
How to install
mdr add ellmos-ai/skills/letter-hooker@sha256:cb03d9a06cc52cedThe line at the top of this page pins the label v1.0.0, 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_nanyrklizw5ura4h)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 30, 2026 and Aug 30, 2026, about one every 8 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-08-30 | afc9f92 | 4,609 B | A | view · diff |
| v1.0.0 | 2026-08-23 | f025c2c | 4,462 B | A | view · diff |
| v1.0.0 | 2026-07-30 | 08fbb89 | 4,443 B | A | view · diff |
| v1.0.0 | 2026-07-30 | 0a53eeb | 4,379 B | A | view · diff |
| v1.0.0 | 2026-07-30 | d690d83 | 4,442 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 (4609 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
ellmos-ai/skills · 9 stars · license MIT · pushed 2026-11-07 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_nanyrklizw5ura4h GET https://markdownregistry.com/api/v1/resolve?ref=ellmos-ai/skills/letter-hooker GET https://markdownregistry.com/api/v1/blob/cb03d9a06cc52ced2695c952c855b3d57c168dc5b0a9ad1c412e72da13de1765
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.