A validator for Claude Code hooks, which are scripts that run when specified events occur during a coding session. It checks the hook settings file and the event names used by the scripts.

Use it after adding or editing hooks, or when a hook does not fire, to check settings and script configuration against the stated Claude Code specification.

It helps catch invalid configuration and misspelled event names before hooks fail silently or cannot run.

hooks-check — Skill for Claude Code by claude-world/director-mode-lite

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 claude-world/director-mode-lite --skill hooks-check

Clone the repo

git clone --depth 1 https://github.com/claude-world/director-mode-lite

Made for: Claude Code.

Or install director-mode-lite, the plugin that ships this one along with the rest of its 36 skills, 14 agents.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/claude-world/director-mode-lite/hooks-check/github.svg)](https://agentmods.dev/skills/claude-world/director-mode-lite/hooks-check)

Your own site

<a href="https://agentmods.dev/skills/claude-world/director-mode-lite/hooks-check"><img src="https://agentmods.dev/badge/skills/claude-world/director-mode-lite/hooks-check/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/claude-world/director-mode-lite/hooks-check"><img src="https://agentmods.dev/badge/skills/claude-world/director-mode-lite/hooks-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,213 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. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original 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.

Model	Per session	Once invoked
Fable 5.1	$0.00032	$0.01213
Opus 5.5	$0.00013	$0.00485
Sonnet 5.5	$0.00006	$0.00243
Haiku 4.5	$0.00003	$0.00121

Measured 15d ago against content hash 54e357995ec0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

hooks-check 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 15d 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.

skills/hooks-check/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hooks Validator

Validate hooks configuration in .claude/settings.json and hook scripts against the official Claude Code spec.

Validation Steps

1. Check settings.json

Verify the hooks section exists and is valid.

2. Validate Hook Event Names

Claude Code defines 33 hook events. Accept any of them; flag unknown names with a typo hint (e.g. PrePromptSubmit -> UserPromptSubmit, PostToolBatchFailure -> PostToolBatch, SubagentStarts -> SubagentStart).

Group	Events
Lifecycle	`SessionStart`, `SessionEnd`, `Setup`
Prompt	`UserPromptSubmit`, `UserPromptExpansion`
Tool	`PreToolUse`, `PostToolUse`, `PostToolUseFailure`, `PostToolBatch`
Permission	`PermissionRequest`, `PermissionDenied`
Subagent	`SubagentStart`, `SubagentStop`
Stop	`Stop`, `StopFailure`
Task	`TaskCreated`, `TaskCompleted`
Compaction	`PreCompact`, `PostCompact`
Notification	`Notification`, `MessageDisplay`
MCP elicitation	`Elicitation`, `ElicitationResult`
Model	`PreModelSwitch`, `PostModelSwitch`
Environment	`ConfigChange`, `CwdChanged`, `DirectoryAdded`, `FileChanged`, `InstructionsLoaded`, `WorktreeCreate`, `WorktreeRemove`, `TeammateIdle`

That is all 33 events. See the official hooks docs for each event's payload.

3. Validate Each Hook Entry

type is present and one of: command, prompt, http, mcp_tool, agent
If type: command: command path exists and script is executable; a shell-form path variable is quoted ("$CLAUDE_PROJECT_DIR"/...), or the hook uses exec form (args)
If type: prompt or agent: prompt string is non-empty
If type: http: url is set; if type: mcp_tool: server and tool are set
matcher is a string if present (exact names joined by | or ,, *, or a regex); warn when it sits on an event without matcher support (UserPromptSubmit, Stop, PostToolBatch, TeammateIdle, TaskCreated, TaskCompleted, WorktreeCreate, WorktreeRemove, MessageDisplay, CwdChanged), where it is silently ignored
timeout is a positive integer if present (defaults: 600s command/http/mcp_tool, 30s prompt, 60s agent)
if is a permission rule such as Bash(git *), used only on tool events
onFailure is continue or block (v2.1.295+); recommend block for security guards
once appears only in skill frontmatter hooks; settings files ignore it
async / asyncRewake appear only on command hooks
statusMessage is a string if present
SessionEnd matchers do not use bypass_permissions_disabled (removed in v2.1.234)

Read the full file on GitHub · 116 lines

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.

15d ago Changed · +15 lines 54e357995ec0
2mo ago First seen · 101 lines · 32 tokens per session scan A fe7c9d226f99

Subscribe to this mod's changes

hooks-check is a skill published in the GitHub repository claude-world/director-mode-lite (80 stars, last pushed 16d ago), licensed MIT. It adds 32 tokens to every session and 1,213 once invoked, about $0.0001 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.

Claude Code ai-agents ai-coding claude-code-plugin claude-code-plugins claude-code-skills

hooks-check next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
hooks-checkclaude-world/director-mode-lite	Skill	80	16d ago	MIT	A	32	Claude Code
conciseo4f6bgpac3/concise	Skill	19	7mo ago	MIT	A	92	Claude Code, Cursor
session-recapsxhmilyoyo/sundayhao-plugins	Skill	9	yesterday	Apache-2.0	A	39	Claude Code
peekaboojohnkozaris/jko-claude-plugins	Skill	11	yesterday	MIT	A	104	Claude Code
mobile-flows-maestrojohnkozaris/jko-claude-plugins	Skill	11	yesterday	MIT	A	102	Claude Code
knowledge-bank-lookupsxhmilyoyo/sundayhao-plugins	Skill	9	yesterday	Apache-2.0	A	94	Claude Code
kb-ingestsxhmilyoyo/sundayhao-plugins	Skill	9	yesterday	Apache-2.0	A	152	Claude Code