hooks

hooks is a skill for Claude Code, Codex from get-vix/vix. It costs 69 tokens per session (2,803 once invoked), scanned A, original, AGPL-3.0.

A system for running automatic actions at specific points in an agent session, such as before a tool runs, when a prompt is submitted, or when a turn ends.

In plain words
What is it for?
Blocking or rewriting tool calls, checking prompts, formatting output, sending notifications, and reacting to agent activity.
Why use it?
It helps enforce rules and catch or change actions before they happen, without relying on the agent to remember every check.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Blocking or rewriting tool calls, checking prompts, formatting output, sending notifications, and reacting to agent activity.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/get-vix/vix/hooks
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add get-vix/vix --skill hooks
Clone the repo
git clone --depth 1 https://github.com/get-vix/vix

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for hooks

README.md
[![agentmods](https://agentmods.dev/badge/skills/get-vix/vix/hooks/github.svg)](https://agentmods.dev/skills/get-vix/vix/hooks)
Your own site
<a href="https://agentmods.dev/skills/get-vix/vix/hooks"><img src="https://agentmods.dev/badge/skills/get-vix/vix/hooks/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for hooks

Your own site · 80×15
<a href="https://agentmods.dev/skills/get-vix/vix/hooks"><img src="https://agentmods.dev/badge/skills/get-vix/vix/hooks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,803 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00069 $0.02803
Opus 5.5 $0.00028 $0.01121
Sonnet 5.5 $0.00014 $0.00561
Haiku 4.5 $0.00007 $0.00280

Measured 1mo ago against content hash c72ba1cc78bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

hooks scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

internal/config/defaults/skills/hooks/SKILL.md · 226 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 226 lines · 69 tokens per session scan A c72ba1cc78bf

Subscribe to this mod's changes

hooks is a skill published in the GitHub repository get-vix/vix (280 stars, last pushed 1mo ago), licensed AGPL-3.0. It adds 69 tokens to every session and 2,803 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

commit

Inspect git status, draft a commit message that matches the repo's style, and commit staged changes.

mochow13/keen-code · 22 tokens

review

Review current code changes for bugs, regressions, test gaps, and project-guideline violations.

mochow13/keen-code · 21 tokens

review

Review a change for correctness, security, and missing tests.

morganlinton/Albatross · 14 tokens

codex-delegate

Delegate a coding task to the OpenAI Codex CLI as a background implementer, then review its diff and land it yourself. Use this whenever the user wants to hand implementation work to Codex — phrasings like "have Codex do X", "delegate this to Codex", "run it through Codex", or "use Codex to implement/fix/refactor" …

amElnagdy/delegate-skills · 155 tokens

claude-delegate

Delegate a coding task to a separate Claude Code CLI process or another Claude session as an implementer, then review its diff and land it yourself. Use only when the user explicitly asks to delegate implementation to Claude Code, another Claude session, or the claude CLI — for example, "have another Claude implement…

amElnagdy/delegate-skills · 117 tokens

commandcode-delegate

Delegate a coding task to the Command Code CLI (cmd) as a background implementer, then review its diff and land it yourself. Use this whenever the user wants to hand implementation work to Command Code — phrasings like "have Command Code do X", "delegate this to commandcode", "run it through cmd", or "use Command Code…

amElnagdy/delegate-skills · 123 tokens