---
title: "PreToolUse"
description: "Hooks triggered on PreToolUse events (20 hooks)."
canonical: "https://orchestkit.yonyon.ai/docs/reference/hooks/pre-tool-use"
---

# PreToolUse

Hooks triggered on PreToolUse events (20 hooks).

# PreToolUse Hooks

**20 hooks** registered for the `PreToolUse` lifecycle event.

| Hook | Matcher | Behavior | Description |
|------|---------|----------|-------------|
| `sync-bash-dispatcher` | `Bash` | Injects | Consolidates 3 Bash PreToolUse hooks into a single dispatcher. |
| `webhook-forwarder` | `Bash` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `sync-write-edit-dispatcher` | `Write\|Edit` | Injects | Consolidates 5 Write\|Edit PreToolUse hooks into a single dispatcher. |
| `webhook-forwarder` | `Write\|Edit` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `skill-tracker` | `Skill` | Silent | Logs Skill tool invocations with analytics |
| `webhook-forwarder` | `Skill` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `context7-tracker` | `mcp__context7__*` | Blocks | Tracks context7 library lookups and injects cache state as additionalContext CC 2.1.9 Enhanced |
| `webhook-forwarder` | `mcp__context7__*` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `memory-validator` | `mcp__memory__*` | Blocks | Validates memory operations to prevent accidental data loss |
| `webhook-forwarder` | `mcp__memory__*` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `sync-task-dispatcher` | `Agent` | Injects | Consolidates 3 Task PreToolUse hooks into a single dispatcher. |
| `webhook-forwarder` | `Agent` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `tldr-summary` | `Read` | Injects | Intercepts Read calls on large files (>500 lines or >2000 tokens) and injects a structural summary as additionalContext. Claude sees the summary as a roadmap alongside the full file content. |
| `webhook-forwarder` | `Read` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `headless-responder` | `AskUserQuestion` | Silent | Headless AskUserQuestion Responder (CC 2.1.85) |
| `webhook-forwarder` | `AskUserQuestion` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `workflow-agenttype-advisor` | `Workflow` | Injects | Scans Workflow `script` for agent() call sites and, when none set opts.agentType, injects an advisory with the specialist catalog mapping (mirror of skills/chain-patterns/references/dynamic-workflow-patterns.md §agentType). |
| `webhook-forwarder` | `Workflow` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `webhook-forwarder` | `CronCreate` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |
| `webhook-forwarder` | `*` | Fire-and-forget | Registered for every CC event type in hooks.json (async: true). Delegates to telemetry.emit() which fans out to pluggable sinks (JSONL local + HTTP remote). No-op when no sinks are active. |