list_hooks

List Claude Code hooks across user/project/local scopes, with validation warnings for unknown events, missing binaries, and duplicates. Optionally include the catalog of installable templates.

ServerClaude Code Toolkit
CategoryRead

How to control list_hooks ↓

WHAT IT DOES

What list_hooks does on Claude Code Toolkit

AI agents call list_hooks to retrieve information from Claude Code Toolkit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why list_hooks needs a policy

The tool queries and displays existing hook configuration across scopes and optionally returns a catalog of templates. It performs validation and reporting (warnings) but does not create, modify, delete, or execute any hooks. This is fundamentally a read/query operation with no capability to change system state or trigger external actions.

From the tool's definition Tool name 'list_hooks' and description 'List Claude Code hooks' indicates a retrieval operation. The verbs 'list' and 'include' (for optional catalog display) are read-only operations with no side effects.

Documented attack patterns abuse exactly the kind of access list_hooks gives an agent:

POLICY

How to control list_hooks

PolicyLayer is an MCP gateway — it sits between your AI agents and Claude Code Toolkit, and nothing reaches the server without passing your rules. This is the rule we recommend for list_hooks:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_hooks": {}
  }
}

list_hooks is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Claude Code Toolkit — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

More Claude Code Toolkit tools

Destructive cleanup_backups Delete old backup files to free up disk space. Destructive wipe_traces Securely wipe ALL Claude Code traces. Overwrites files with zeros before deletion. Require Destructive clean_claude_directory Analyze and clean the .claude directory. Removes debug logs, empty todos, old snapshots, a Destructive clean_traces Selectively clean Claude Code traces by category, age, or project. Destructive enforce_retention Apply data retention policy by deleting sessions older than specified days. Execute run_doctor Full integrity check: detects corrupted JSONL lines, truncated thinking blocks, oversized Execute run_maintenance Run maintenance checks on Claude Code installation. Identifies issues, old backups, and ar Execute start_dashboard Start the web dashboard on a local port. Returns the URL to open in a browser.

All 40 Claude Code Toolkit tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_hooks

What does the list_hooks tool do? +

List Claude Code hooks across user/project/local scopes, with validation warnings for unknown events, missing binaries, and duplicates. Optionally include the catalog of installable templates. It is categorised as a Read tool in the Claude Code Toolkit MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_hooks? +

Register the Claude Code Toolkit MCP server in PolicyLayer and add a rule for list_hooks: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Claude Code Toolkit. Nothing to install.

What risk level is list_hooks? +

list_hooks is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_hooks? +

Yes. Add a rate_limit block to the list_hooks rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block list_hooks completely? +

Set action: deny in the PolicyLayer policy for list_hooks. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides list_hooks? +

list_hooks is provided by the Claude Code Toolkit MCP server (asifkibria/claude-code-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Claude Code Toolkit tool call.

Start from Claude Code Toolkit, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →

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40 Claude Code Toolkit tools catalogued and risk-classified — across an index of 43,000+ MCP servers.