hook-dev SKILL.md skillA
hook-dev from andisab/swe-marketplace is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add andisab/swe-marketplace/hook-dev@git:20260326.c644335Pins git:20260326.c644335 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- andisab/swe-marketplace
- Path
plugins/context-engineering/skills/hook-dev/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260326.c644335, committed Mar 26, 2026
- Size
- 18,396 bytes
- Repository stars
- 21
- License
- MIT
Use this skill when creating or refining Claude Code hooks. Hooks are shell commands that execute at specific lifecycle events (tool use, prompt submit, notifications, session events). Helps design event handlers for notifications, formatting, logging, feedback, and permission control. Automatically invoked when user requests "create a hook", "add automation", "event handler", "workflow automation", or mentions hook development.
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
# Hook Dev Skill This skill helps create production-ready Claude Code hooks following Anthropic's official specifications. ## What are Hooks? **Hooks** are user-defined shell commands that execute at various points in Claude Code's lifecycle. They provide: - **Deterministic control**: Ensure actions happen automatically, not relying on LLM decisions - **Workflow automation**: Format code, run linters, log commands - **Custom notifications**: Alert when Claude needs input - **Permission systems**: Block sensitive file modifications - **Feedback loops**: Validate code changes against conventions ## Hook vs Skill vs Command | Feature | Hook | Skill | Command | |---------|------|-------|---------| | **Trigger** | Lifecycle event | Context match | User invocation | | **Type** | Shell command | AI capability | Prompt template | | **Use case** | Automation, validation | Autonomous features | Reusable prompts | | **Control** | Deterministic | LLM-driven | User-initiated | **When to use Hooks**: Automatic formatting, logging, notifications, permission control, code validation ## Hook Events Ten lifecycle events trigger hooks: ### 1. PreToolUse …
Read the whole file at its exact version.
How to install
mdr add andisab/swe-marketplace/hook-dev@sha256:c5b6de793edf9432The line at the top of this page pins the label git:20260326.c644335, 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_r2n5lniiebas72ri)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 26, 2026.
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 (18396 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
andisab/swe-marketplace · 21 stars · license MIT · pushed 2026-10-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_r2n5lniiebas72ri GET https://markdownregistry.com/api/v1/resolve?ref=andisab/swe-marketplace/hook-dev GET https://markdownregistry.com/api/v1/blob/c5b6de793edf9432039108550d009bf4242a2e57132fb2f3bd829bc9907e7f63
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.