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Hook Templates

Copy-paste templates for common hook patterns. Customize for your specific needs.

Template 1: Basic PostToolUse Hook (v2.0)

Purpose: React to any MCP tool call

#!/bin/bash
# [Description of what this hook does]

# Read JSON input from stdin
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Defensive check - only proceed if condition is met
# Example: Only react to task status changes
if [ "$OPERATION" != "setStatus" ] || [ "$CONTAINER_TYPE" != "task" ]; then
  exit 0
fi

# Extract specific fields
FIELD=$(echo "$INPUT" | jq -r '.tool_input.field_name')

# Additional defensive check
if [ "$FIELD" != "expected_value" ]; then
  exit 0
fi

# Perform your action here
cd "$CLAUDE_PROJECT_DIR"
# ... your logic ...

echo "✓ Hook completed successfully"
exit 0

Configuration Template:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {
            "type": "command",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/YOUR-HOOK.sh"
          }
        ]
      }
    ]
  }
}

v2.0 Note: Since manage_container handles all create/update/delete/setStatus operations, your hook script must filter by operation and containerType to react to specific actions.

Template 2: Blocking Quality Gate Hook (v2.0)

Purpose: Prevent operations that don't meet criteria

#!/bin/bash
# [Description of quality gate]

# Read JSON input
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Only run quality gate for specific operations
# Example: Block feature completion unless tests pass
if [ "$OPERATION" != "setStatus" ] || [ "$CONTAINER_TYPE" != "feature" ]; then
  exit 0
fi

# Extract field to check
STATUS=$(echo "$INPUT" | jq -r '.tool_input.status')

# Only run quality gate when marking feature complete
if [ "$STATUS" != "completed" ]; then
  exit 0
fi

# Run validation check
cd "$CLAUDE_PROJECT_DIR"
./your-validation-command

if [ $? -ne 0 ]; then
  # Validation failed - block the operation
  cat << EOF
{
  "decision": "block",
  "reason": "Detailed explanation of why operation was blocked and what to fix"
}
EOF
  exit 0
fi

echo "✓ Validation passed"
exit 0

Configuration Template:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {
            "type": "command",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/YOUR-GATE.sh",
            "timeout": 300
          }
        ]
      }
    ]
  }
}

Template 3: Database Query Hook (v2.0)

Purpose: Get data from Task Orchestrator database

#!/bin/bash
# [Description]

# Read JSON input
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Filter by operation/containerType as needed
if [ "$CONTAINER_TYPE" != "task" ]; then
  exit 0
fi

# Extract ID to query (from input for update/setStatus, from output for create)
ENTITY_ID=$(echo "$INPUT" | jq -r '.tool_input.id // .tool_output.data.id')

# Query database
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"

# Single value query
VALUE=$(sqlite3 "$DB_PATH" \
  "SELECT column FROM table WHERE id='$ENTITY_ID'" 2>/dev/null)

# Multiple columns query
RESULT=$(sqlite3 "$DB_PATH" -json \
  "SELECT col1, col2, col3 FROM table WHERE id='$ENTITY_ID'" 2>/dev/null)

# Check if query succeeded
if [ -z "$VALUE" ]; then
  echo "Warning: Could not find record"
  exit 0
fi

# Use the data
echo "Found: $VALUE"

# Your action here based on database data
# ...

exit 0

Common Database Queries:

-- Get task details
SELECT title, status, priority, complexity
FROM Tasks
WHERE id='TASK_ID';

-- Get feature details
SELECT name, status, summary
FROM Features
WHERE id='FEATURE_ID';

-- Get task dependencies
SELECT t.title
FROM Tasks t
JOIN TaskDependencies d ON t.id = d.taskId
WHERE d.dependentTaskId='TASK_ID';

-- Count tasks in feature
SELECT COUNT(*)
FROM Tasks
WHERE featureId='FEATURE_ID';

-- Get incomplete tasks
SELECT id, title
FROM Tasks
WHERE featureId='FEATURE_ID' AND status != 'completed';

Template 4: Git Automation Hook (v2.0)

Purpose: Automate git operations

#!/bin/bash
# [Description of git automation]

# Read JSON input
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Filter by operation/containerType
if [ "$OPERATION" != "setStatus" ] || [ "$CONTAINER_TYPE" != "task" ]; then
  exit 0
fi

# Extract relevant data
ENTITY_ID=$(echo "$INPUT" | jq -r '.tool_input.id')
STATUS=$(echo "$INPUT" | jq -r '.tool_input.status')

# Only proceed for specific condition
if [ "$STATUS" != "completed" ]; then
  exit 0
fi

# Check if we're in a git repository
if [ ! -d "$CLAUDE_PROJECT_DIR/.git" ]; then
  echo "Not a git repository, skipping"
  exit 0
fi

cd "$CLAUDE_PROJECT_DIR"

# Check if there are changes
if git diff-index --quiet HEAD --; then
  echo "No changes to commit"
  exit 0
fi

# Get entity details from database
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"
TITLE=$(sqlite3 "$DB_PATH" \
  "SELECT title FROM Tasks WHERE id='$ENTITY_ID'" 2>/dev/null)

# Stage changes
git add -A

# Create commit
git commit -m "TYPE: $TITLE" -m "Entity-ID: $ENTITY_ID"

# Optional: Push to remote
# git push origin $(git rev-parse --abbrev-ref HEAD)

echo "✓ Created git commit"
exit 0

Git Command Patterns:

# Create branch
git checkout -b "feature/branch-name"

# Switch branch
git checkout branch-name

# Merge branch (no fast-forward)
git merge branch-name --no-ff -m "Merge message"

# Delete branch
git branch -d branch-name

# Tag release
git tag -a "v1.0.0" -m "Release message"

# Push tags
git push --tags

# Get current branch
CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)

# Check if branch exists
if git rev-parse --verify branch-name >/dev/null 2>&1; then
  echo "Branch exists"
fi

# Get last commit message
LAST_COMMIT=$(git log -1 --pretty=%B)

Template 5: Logging/Metrics Hook (v2.0)

Purpose: Track events for analytics

#!/bin/bash
# [Description of what is being logged]

# Read JSON input
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Filter by operation/containerType as needed
if [ "$OPERATION" != "setStatus" ] || [ "$CONTAINER_TYPE" != "task" ]; then
  exit 0
fi

# Extract data to log
FIELD1=$(echo "$INPUT" | jq -r '.tool_input.field1')
FIELD2=$(echo "$INPUT" | jq -r '.tool_input.field2')

# Generate timestamp
TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

# Create metrics directory
METRICS_DIR="$CLAUDE_PROJECT_DIR/.claude/metrics"
mkdir -p "$METRICS_DIR"

# Define log file
LOG_FILE="$METRICS_DIR/event-log.csv"

# Create header if file doesn't exist
if [ ! -f "$LOG_FILE" ]; then
  echo "timestamp,field1,field2,field3" > "$LOG_FILE"
fi

# Append log entry
echo "$TIMESTAMP,$FIELD1,$FIELD2,value" >> "$LOG_FILE"

echo "✓ Logged event"
exit 0

Log File Formats:

# CSV format (easy to import into Excel/Google Sheets)
timestamp,event_type,entity_id,value1,value2
2025-10-18T14:30:00Z,task_complete,uuid,high,7

# JSON Lines format (easy to parse programmatically)
{"timestamp":"2025-10-18T14:30:00Z","event":"task_complete","id":"uuid"}

# Human-readable format
[2025-10-18 14:30:00 UTC] Task Completed: "Task Title" (ID: uuid)

Template 6: External API Hook (v2.0)

Purpose: Send data to external service

#!/bin/bash
# [Description of API integration]

# Read JSON input
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Filter by operation/containerType as needed
if [ "$CONTAINER_TYPE" != "task" ]; then
  exit 0
fi

# Extract data (from input for update/setStatus, from output for create)
ENTITY_ID=$(echo "$INPUT" | jq -r '.tool_input.id // .tool_output.data.id')

# Get additional data from database if needed
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"
TITLE=$(sqlite3 "$DB_PATH" \
  "SELECT title FROM Tasks WHERE id='$ENTITY_ID'" 2>/dev/null)

# Prepare API payload
PAYLOAD=$(cat <<EOF
{
  "entity_id": "$ENTITY_ID",
  "title": "$TITLE",
  "timestamp": "$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
}
EOF
)

# Send to API
curl -X POST "https://api.example.com/webhook" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d "$PAYLOAD" \
  -s \
  -o /dev/null \
  -w "HTTP %{http_code}"

echo "✓ Sent to external API"
exit 0

API Integration Patterns:

# Slack webhook
curl -X POST "$SLACK_WEBHOOK_URL" \
  -H "Content-Type: application/json" \
  -d '{"text": "Message"}'

# Discord webhook
curl -X POST "$DISCORD_WEBHOOK_URL" \
  -H "Content-Type: application/json" \
  -d '{"content": "Message"}'

# Generic REST API with auth
curl -X POST "$API_URL" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $TOKEN" \
  -d "$JSON_PAYLOAD"

# GitHub API (create issue)
curl -X POST "https://api.github.com/repos/owner/repo/issues" \
  -H "Authorization: token $GITHUB_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"title": "Issue", "body": "Description"}'

# Jira API (create issue)
curl -X POST "$JIRA_URL/rest/api/2/issue" \
  -u "$JIRA_USER:$JIRA_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"fields": {"project": {"key": "PROJ"}, "summary": "Title"}}'

Template 7: Notification Hook (v2.0)

Purpose: Send notifications to user or team

#!/bin/bash
# [Description of notification]

# Read JSON input
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Filter by operation/containerType as needed
if [ "$OPERATION" != "create" ] || [ "$CONTAINER_TYPE" != "task" ]; then
  exit 0
fi

# Extract data for notification (from output for create operations)
ENTITY_ID=$(echo "$INPUT" | jq -r '.tool_output.data.id')

# Get entity details
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"
DETAILS=$(sqlite3 "$DB_PATH" \
  "SELECT title, status FROM Tasks WHERE id='$ENTITY_ID'" 2>/dev/null)

# Only notify for specific conditions
if [ -z "$DETAILS" ]; then
  exit 0
fi

# Choose notification method

# Method 1: Terminal notification (macOS)
# osascript -e 'display notification "Message" with title "Title"'

# Method 2: Terminal notification (Linux with notify-send)
# notify-send "Title" "Message"

# Method 3: Email (requires mail command)
# echo "Message body" | mail -s "Subject" user@example.com

# Method 4: Slack
# curl -X POST "$SLACK_WEBHOOK" -d '{"text": "Message"}'

# Method 5: Console output (always works)
echo "==================================="
echo "NOTIFICATION"
echo "==================================="
echo "Details: $DETAILS"
echo "==================================="

exit 0

Template 8: SubagentStop Hook

Purpose: React to subagent completion

#!/bin/bash
# [Description of subagent reaction]

# Read JSON input
INPUT=$(cat)

# Extract session info
SESSION_ID=$(echo "$INPUT" | jq -r '.session_id')
TRANSCRIPT_PATH=$(echo "$INPUT" | jq -r '.transcript_path')

# Parse transcript if needed
if [ -f "$TRANSCRIPT_PATH" ]; then
  # Extract information from transcript
  SUBAGENT_TYPE=$(tail -50 "$TRANSCRIPT_PATH" | \
    grep -o '"subagent_type":"[^"]*"' | tail -1 | cut -d'"' -f4)

  # Your logic based on subagent type
  case "$SUBAGENT_TYPE" in
    "backend-engineer")
      echo "Backend work completed"
      # Run backend-specific actions
      ;;
    "test-engineer")
      echo "Testing completed"
      # Run test-specific actions
      ;;
    *)
      echo "Subagent completed: $SUBAGENT_TYPE"
      ;;
  esac
fi

# Log or take action
echo "✓ Processed subagent completion"
exit 0

Template 9: Conditional Multi-Action Hook (v2.0)

Purpose: Different actions based on conditions

#!/bin/bash
# [Description of conditional logic]

# Read JSON input
INPUT=$(cat)

# Extract operation and container type (v2.0 consolidated tools)
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')

# Filter by operation/containerType
if [ "$OPERATION" != "setStatus" ] || [ "$CONTAINER_TYPE" != "task" ]; then
  exit 0
fi

# Extract fields
STATUS=$(echo "$INPUT" | jq -r '.tool_input.status')
ENTITY_ID=$(echo "$INPUT" | jq -r '.tool_input.id')

# Get additional context from database
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"
PRIORITY=$(sqlite3 "$DB_PATH" \
  "SELECT priority FROM Tasks WHERE id='$ENTITY_ID'" 2>/dev/null)

# Conditional logic
if [ "$STATUS" = "completed" ] && [ "$PRIORITY" = "high" ]; then
  # High priority task completed
  echo "🎉 High priority task completed!"
  # Send urgent notification
  # Create git commit
  # Update dashboard

elif [ "$STATUS" = "completed" ] && [ "$PRIORITY" = "low" ]; then
  # Low priority task completed
  echo "✓ Low priority task completed"
  # Just log it

elif [ "$STATUS" = "blocked" ]; then
  # Task is blocked
  echo "⚠️  Task blocked"
  # Alert team
  # Identify blocker

else
  # Other status changes
  echo "Status changed to: $STATUS"
fi

exit 0

Template 10: Dependency Check

Purpose: Check for blocking dependencies

#!/bin/bash
# Check dependencies before allowing operation

# Read JSON input
INPUT=$(cat)

# Extract entity ID
ENTITY_ID=$(echo "$INPUT" | jq -r '.tool_input.id')

# Check for incomplete dependencies
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"
INCOMPLETE_DEPS=$(sqlite3 "$DB_PATH" \
  "SELECT COUNT(*) FROM Tasks t
   JOIN TaskDependencies d ON t.id = d.taskId
   WHERE d.dependentTaskId='$ENTITY_ID'
   AND t.status != 'completed'" 2>/dev/null)

if [ "$INCOMPLETE_DEPS" -gt 0 ]; then
  # Block operation - dependencies not complete
  cat << EOF
{
  "decision": "block",
  "reason": "Cannot proceed - $INCOMPLETE_DEPS blocking dependencies are incomplete"
}
EOF
  exit 0
fi

echo "✓ All dependencies complete"
exit 0

Template 11: Error Handling Hook

Purpose: Robust error handling

#!/bin/bash
# [Description with robust error handling]

# Enable strict error handling
set -euo pipefail

# Error handler function
error_handler() {
  echo "Error on line $1"
  exit 1
}

trap 'error_handler $LINENO' ERR

# Read JSON input
INPUT=$(cat)

# Check for required tools
command -v jq >/dev/null 2>&1 || {
  echo "Error: jq is required but not installed"
  exit 2
}

command -v sqlite3 >/dev/null 2>&1 || {
  echo "Error: sqlite3 is required but not installed"
  exit 2
}

# Validate environment variables
if [ -z "${CLAUDE_PROJECT_DIR:-}" ]; then
  echo "Error: CLAUDE_PROJECT_DIR not set"
  exit 2
fi

# Extract with fallback
FIELD=$(echo "$INPUT" | jq -r '.tool_input.field // "default_value"')

# Check database exists
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"
if [ ! -f "$DB_PATH" ]; then
  echo "Error: Database not found at $DB_PATH"
  exit 2
fi

# Your logic here with error checking
if ! result=$(sqlite3 "$DB_PATH" "SELECT ..." 2>&1); then
  echo "Error querying database: $result"
  exit 2
fi

echo "✓ Hook completed successfully"
exit 0

Configuration Combination Examples (v2.0)

Multiple Hooks on Consolidated Tool:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {"type": "command", "comment": "Auto-commit", "command": ".claude/hooks/commit.sh"},
          {"type": "command", "comment": "Send notifications", "command": ".claude/hooks/notify.sh"},
          {"type": "command", "comment": "Log metrics", "command": ".claude/hooks/metrics.sh"}
        ]
      }
    ]
  }
}

Note: In v2.0, the single manage_container matcher handles all operations (create, update, delete, setStatus) for all container types (task, feature, project). Each hook script filters by operation and containerType to react to specific actions.

Multiple Tools, Different Hooks:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {"type": "command", "comment": "Task/feature operations", "command": ".claude/hooks/container-handler.sh"}
        ]
      },
      {
        "matcher": "mcp__task-orchestrator__manage_sections",
        "hooks": [
          {"type": "command", "comment": "Section operations", "command": ".claude/hooks/section-handler.sh"}
        ]
      },
      {
        "matcher": "mcp__task-orchestrator__get_next_task",
        "hooks": [
          {"type": "command", "command": ".claude/hooks/task-recommender.sh"}
        ]
      }
    ]
  }
}

Mixed Event Types:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__set_status",
        "hooks": [
          {"type": "command", "command": ".claude/hooks/task-complete.sh"}
        ]
      }
    ],
    "SubagentStop": [
      {
        "hooks": [
          {"type": "command", "command": ".claude/hooks/subagent-logger.sh"}
        ]
      }
    ]
  }
}

Template 12: Cascade Event Responder (v2.0 - Opinionated)

Purpose: Automatically progress features/projects when cascade events detected (OPINIONATED - auto-applies by default)

#!/bin/bash
# Auto-progress workflow when cascade events occur
# OPINIONATED: Auto-applies status changes when automatic=true
# For manual confirmation, see Progressive Disclosure template

INPUT=$(cat)

# Extract cascade events from tool response
CASCADE_EVENTS=$(echo "$INPUT" | jq -r '.tool_output.data.cascadeEvents // []')

# Check if any cascade events detected
if [ "$CASCADE_EVENTS" == "[]" ] || [ "$CASCADE_EVENTS" == "null" ]; then
  exit 0
fi

# Process each cascade event
echo "$CASCADE_EVENTS" | jq -c '.[]' | while read -r event; do
  EVENT_TYPE=$(echo "$event" | jq -r '.event')
  TARGET_TYPE=$(echo "$event" | jq -r '.targetType')
  TARGET_ID=$(echo "$event" | jq -r '.targetId')
  TARGET_NAME=$(echo "$event" | jq -r '.targetName')
  CURRENT_STATUS=$(echo "$event" | jq -r '.currentStatus')
  SUGGESTED_STATUS=$(echo "$event" | jq -r '.suggestedStatus')
  AUTOMATIC=$(echo "$event" | jq -r '.automatic')
  REASON=$(echo "$event" | jq -r '.reason')

  echo "🔄 Cascade Event Detected"
  echo "   Event: $EVENT_TYPE"
  echo "   Target: $TARGET_NAME ($TARGET_TYPE)"
  echo "   Status: $CURRENT_STATUS → $SUGGESTED_STATUS"
  echo "   Reason: $REASON"

  # OPINIONATED: Auto-apply if automatic=true (default behavior)
  if [ "$AUTOMATIC" == "true" ]; then
    echo "✅ Auto-applying status change (automatic=true)"

    # Log the cascade event
    LOG_DIR="$CLAUDE_PROJECT_DIR/.claude/metrics"
    mkdir -p "$LOG_DIR"
    TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
    echo "$TIMESTAMP,$EVENT_TYPE,$TARGET_TYPE,$TARGET_ID,$TARGET_NAME,$CURRENT_STATUS,$SUGGESTED_STATUS,auto" \
      >> "$LOG_DIR/cascade-events.csv"

    # TODO: Call manage_container to apply status
    # This requires MCP client support for hook → tool communication
    # For now, we log and rely on Skills to apply
    echo "   ✓ Cascade event logged for auto-application by orchestrator"
  else
    # Manual confirmation required
    echo "⚠️  Manual confirmation required (automatic=false)"
    echo "   → Feature/Task Orchestration Skill will prompt user"

    # Log as manual
    LOG_DIR="$CLAUDE_PROJECT_DIR/.claude/metrics"
    mkdir -p "$LOG_DIR"
    TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
    echo "$TIMESTAMP,$EVENT_TYPE,$TARGET_TYPE,$TARGET_ID,$TARGET_NAME,$CURRENT_STATUS,$SUGGESTED_STATUS,manual" \
      >> "$LOG_DIR/cascade-events.csv"
  fi
done

exit 0

Configuration:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {
            "type": "command",
            "comment": "Auto-progress workflow on cascade events",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/cascade-auto-progress.sh"
          }
        ]
      }
    ]
  }
}

When NOT to use auto-apply:

Critical production deployments (use Template 16: Progressive Disclosure)
Security/compliance workflows requiring human review
Learning/training environments where manual confirmation is educational
When you want full control over every status transition

Template 13: Flow-Aware Quality Gate (v2.0)

Purpose: Adaptive quality gates based on workflow flow (default_flow, rapid_prototype_flow, with_review_flow)

#!/bin/bash
# Flow-aware quality gate - different validation per workflow flow
# OPINIONATED: Skips tests for prototypes, enforces for production

INPUT=$(cat)

# Extract operation and container type
OPERATION=$(echo "$INPUT" | jq -r '.tool_input.operation')
CONTAINER_TYPE=$(echo "$INPUT" | jq -r '.tool_input.containerType')
STATUS=$(echo "$INPUT" | jq -r '.tool_input.status')

# Only run for feature status changes to testing/completed
if [ "$OPERATION" != "setStatus" ] || [ "$CONTAINER_TYPE" != "feature" ]; then
  exit 0
fi

if [ "$STATUS" != "testing" ] && [ "$STATUS" != "completed" ]; then
  exit 0
fi

# Extract feature ID
FEATURE_ID=$(echo "$INPUT" | jq -r '.tool_input.id')

# Query feature tags to determine active flow
DB_PATH="$CLAUDE_PROJECT_DIR/data/tasks.db"
TAGS=$(sqlite3 "$DB_PATH" \
  "SELECT tags FROM Features WHERE id='$FEATURE_ID'" 2>/dev/null)

# Determine active flow from tags
FLOW="default_flow"
if echo "$TAGS" | grep -qE "prototype|spike|experiment"; then
  FLOW="rapid_prototype_flow"
elif echo "$TAGS" | grep -qE "security|compliance|audit"; then
  FLOW="with_review_flow"
fi

echo "🔍 Detected workflow flow: $FLOW"

# Flow-specific quality gates
case "$FLOW" in
  "rapid_prototype_flow")
    # OPINIONATED: Skip tests for prototypes (fast iteration)
    echo "⚡ Rapid prototype flow: skipping tests for fast iteration"
    echo "   Tags: $TAGS"
    exit 0
    ;;

  "with_review_flow")
    # OPINIONATED: Strict validation for security/compliance
    echo "🔒 Security/compliance flow: enforcing strict validation"
    cd "$CLAUDE_PROJECT_DIR"

    # Run full test suite
    ./gradlew test || {
      cat << EOF
{
  "decision": "block",
  "reason": "Security flow requires all tests to pass. Please fix failing tests."
}
EOF
      exit 0
    }

    # Check for security scan (if available)
    if command -v trivy >/dev/null 2>&1; then
      echo "   Running security scan..."
      trivy fs . || {
        cat << EOF
{
  "decision": "block",
  "reason": "Security vulnerabilities detected. Please remediate before completion."
}
EOF
        exit 0
      }
    fi

    echo "   ✅ Security validation passed"
    ;;

  "default_flow")
    # OPINIONATED: Standard test suite for default flow
    echo "✓ Default flow: running standard test suite"
    cd "$CLAUDE_PROJECT_DIR"
    ./gradlew test || {
      cat << EOF
{
  "decision": "block",
  "reason": "Tests are failing. Please fix before completing feature."
}
EOF
      exit 0
    }
    echo "   ✅ Tests passed"
    ;;
esac

exit 0

Configuration:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {
            "type": "command",
            "comment": "Flow-aware quality gates",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/flow-aware-gate.sh",
            "timeout": 600
          }
        ]
      }
    ]
  }
}

Customization for Conservative Approach:

# To require tests for ALL flows (not just default/security):
case "$FLOW" in
  "rapid_prototype_flow")
    echo "⚡ Prototype flow: running quick smoke tests"
    ./gradlew quickTest || { # Lightweight test suite
      # Block on failure
    }
    ;;

Template 14: Custom Event Handler (v2.0)

Purpose: React to specific custom events defined in status-workflow-config.yaml

#!/bin/bash
# Custom event handler for workflow-specific events
# Example: tests_passed, review_approved, deployment_ready

INPUT=$(cat)

# Extract cascade events
CASCADE_EVENTS=$(echo "$INPUT" | jq -r '.tool_output.data.cascadeEvents // []')

if [ "$CASCADE_EVENTS" == "[]" ] || [ "$CASCADE_EVENTS" == "null" ]; then
  exit 0
fi

# Look for specific event (customize EVENT_NAME)
EVENT_NAME="tests_passed"  # Change to your custom event

MATCHING_EVENT=$(echo "$CASCADE_EVENTS" | \
  jq -r ".[] | select(.event==\"$EVENT_NAME\")")

if [ -z "$MATCHING_EVENT" ] || [ "$MATCHING_EVENT" == "null" ]; then
  exit 0
fi

# Extract event details
TARGET_TYPE=$(echo "$MATCHING_EVENT" | jq -r '.targetType')
TARGET_ID=$(echo "$MATCHING_EVENT" | jq -r '.targetId')
TARGET_NAME=$(echo "$MATCHING_EVENT" | jq -r '.targetName')
SUGGESTED_STATUS=$(echo "$MATCHING_EVENT" | jq -r '.suggestedStatus')

echo "✅ Custom Event: $EVENT_NAME"
echo "   Target: $TARGET_NAME ($TARGET_TYPE)"
echo "   Suggested: $SUGGESTED_STATUS"

# OPINIONATED: Execute custom logic based on event
case "$EVENT_NAME" in
  "tests_passed")
    echo "   → Triggering deployment pipeline..."
    # Call CI/CD webhook
    # curl -X POST "$DEPLOY_WEBHOOK" -d "{\"id\":\"$TARGET_ID\"}"
    ;;

  "review_approved")
    echo "   → Creating git tag for release..."
    # cd "$CLAUDE_PROJECT_DIR"
    # git tag -a "release-$(date +%Y%m%d)" -m "Release: $TARGET_NAME"
    ;;

  "deployment_ready")
    echo "   → Notifying stakeholders..."
    # Send notifications
    ;;
esac

echo "✓ Custom event handler completed"
exit 0

Configuration:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {
            "type": "command",
            "comment": "Custom event handlers",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/custom-event-handler.sh"
          }
        ]
      }
    ]
  }
}

Template 15: Cascade Event Logger (v2.0)

Purpose: Log all cascade events for analytics and debugging

#!/bin/bash
# Log all cascade events to CSV for analytics
# Non-blocking, observation-only

INPUT=$(cat)

# Extract cascade events
CASCADE_EVENTS=$(echo "$INPUT" | jq -r '.tool_output.data.cascadeEvents // []')

if [ "$CASCADE_EVENTS" == "[]" ] || [ "$CASCADE_EVENTS" == "null" ]; then
  exit 0
fi

# Create metrics directory
LOG_DIR="$CLAUDE_PROJECT_DIR/.claude/metrics"
mkdir -p "$LOG_DIR"

# Define log files
CASCADE_LOG="$LOG_DIR/cascade-events.csv"
SUMMARY_LOG="$LOG_DIR/cascade-summary.json"

# Create header if file doesn't exist
if [ ! -f "$CASCADE_LOG" ]; then
  echo "timestamp,event,target_type,target_id,target_name,current_status,suggested_status,flow,automatic,reason" \
    > "$CASCADE_LOG"
fi

# Log each cascade event
echo "$CASCADE_EVENTS" | jq -c '.[]' | while read -r event; do
  TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
  EVENT_TYPE=$(echo "$event" | jq -r '.event')
  TARGET_TYPE=$(echo "$event" | jq -r '.targetType')
  TARGET_ID=$(echo "$event" | jq -r '.targetId')
  TARGET_NAME=$(echo "$event" | jq -r '.targetName')
  CURRENT_STATUS=$(echo "$event" | jq -r '.currentStatus')
  SUGGESTED_STATUS=$(echo "$event" | jq -r '.suggestedStatus')
  FLOW=$(echo "$event" | jq -r '.flow')
  AUTOMATIC=$(echo "$event" | jq -r '.automatic')
  REASON=$(echo "$event" | jq -r '.reason')

  # Append to CSV
  echo "$TIMESTAMP,$EVENT_TYPE,$TARGET_TYPE,$TARGET_ID,\"$TARGET_NAME\",$CURRENT_STATUS,$SUGGESTED_STATUS,$FLOW,$AUTOMATIC,\"$REASON\"" \
    >> "$CASCADE_LOG"

  echo "📊 Logged cascade event: $EVENT_TYPE ($TARGET_TYPE)"
done

# Update summary statistics
TOTAL_EVENTS=$(tail -n +2 "$CASCADE_LOG" | wc -l)
AUTO_EVENTS=$(tail -n +2 "$CASCADE_LOG" | grep ",true," | wc -l)
MANUAL_EVENTS=$(tail -n +2 "$CASCADE_LOG" | grep ",false," | wc -l)

cat > "$SUMMARY_LOG" <<EOF
{
  "total_cascade_events": $TOTAL_EVENTS,
  "automatic_events": $AUTO_EVENTS,
  "manual_events": $MANUAL_EVENTS,
  "last_updated": "$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
}
EOF

echo "✓ Cascade event logged ($TOTAL_EVENTS total, $AUTO_EVENTS auto, $MANUAL_EVENTS manual)"
exit 0

Configuration:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {
            "type": "command",
            "comment": "Log cascade events for analytics",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/cascade-logger.sh"
          }
        ]
      }
    ]
  }
}

Analytics Queries:

# Count cascade events by type
cut -d',' -f2 .claude/metrics/cascade-events.csv | sort | uniq -c

# Count auto vs manual events
grep ",true," .claude/metrics/cascade-events.csv | wc -l  # Auto
grep ",false," .claude/metrics/cascade-events.csv | wc -l # Manual

# Events by flow
cut -d',' -f8 .claude/metrics/cascade-events.csv | sort | uniq -c

# Recent events (last 10)
tail -10 .claude/metrics/cascade-events.csv

Template 16: Progressive Disclosure Hook (v2.0 - Conservative)

Purpose: Notify user of cascade events WITHOUT auto-applying (conservative alternative to Template 12)

#!/bin/bash
# Progressive disclosure - show cascade suggestions without auto-applying
# CONSERVATIVE: Always requires user confirmation
# Use this when you want full control over status transitions

INPUT=$(cat)

# Extract cascade events
CASCADE_EVENTS=$(echo "$INPUT" | jq -r '.tool_output.data.cascadeEvents // []')

if [ "$CASCADE_EVENTS" == "[]" ] || [ "$CASCADE_EVENTS" == "null" ]; then
  exit 0
fi

echo "════════════════════════════════════════════"
echo "🔔 WORKFLOW CASCADE EVENTS DETECTED"
echo "════════════════════════════════════════════"

# Display each cascade event
EVENT_COUNT=0
echo "$CASCADE_EVENTS" | jq -c '.[]' | while read -r event; do
  EVENT_COUNT=$((EVENT_COUNT + 1))
  EVENT_TYPE=$(echo "$event" | jq -r '.event')
  TARGET_TYPE=$(echo "$event" | jq -r '.targetType')
  TARGET_NAME=$(echo "$event" | jq -r '.targetName')
  CURRENT_STATUS=$(echo "$event" | jq -r '.currentStatus')
  SUGGESTED_STATUS=$(echo "$event" | jq -r '.suggestedStatus')
  REASON=$(echo "$event" | jq -r '.reason')

  echo ""
  echo "Event #$EVENT_COUNT: $EVENT_TYPE"
  echo "  Target: $TARGET_NAME ($TARGET_TYPE)"
  echo "  Current: $CURRENT_STATUS"
  echo "  Suggested: $SUGGESTED_STATUS"
  echo "  Reason: $REASON"
  echo ""
  echo "  💡 To apply: Ask AI to progress $TARGET_NAME to $SUGGESTED_STATUS"
done

echo "════════════════════════════════════════════"
echo ""
echo "ℹ️  These are workflow suggestions based on completion events."
echo "   Review and apply manually using Feature/Task Orchestration Skills."
echo ""

# Log for reference (non-blocking)
LOG_DIR="$CLAUDE_PROJECT_DIR/.claude/metrics"
mkdir -p "$LOG_DIR"
TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
echo "$TIMESTAMP - Displayed $EVENT_COUNT cascade events to user" \
  >> "$LOG_DIR/progressive-disclosure.log"

exit 0

Configuration:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "mcp__task-orchestrator__manage_container",
        "hooks": [
          {
            "type": "command",
            "comment": "Show cascade suggestions (no auto-apply)",
            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/progressive-disclosure.sh"
          }
        ]
      }
    ]
  }
}

When to use Progressive Disclosure instead of Auto-Apply:

✅ Learning environments (understand workflow before automating)
✅ Critical systems (review every decision)
✅ Complex approval workflows (manual gates required)
✅ First-time setup (observe patterns before automating)

Migration path: Start with Progressive Disclosure → Observe patterns → Switch to Auto-Apply for trusted flows

Usage Tips

Start with templates - Copy and customize rather than writing from scratch
Test incrementally - Test each part of the hook separately
Use defensive checks - Always validate conditions before acting
Handle errors gracefully - Don't let hooks break Claude's workflow
Log for debugging - Add echo statements to understand execution
Keep hooks fast - Long-running hooks slow down Claude
Document your hooks - Future you will thank present you
Choose opinionated vs conservative - Auto-apply for trust, Progressive Disclosure for control

Debugging Commands

# Test hook with sample JSON
echo '{"tool_input": {"id": "test"}}' | .claude/hooks/your-hook.sh

# Enable bash debugging
bash -x .claude/hooks/your-hook.sh < test-input.json

# Check hook permissions
ls -la .claude/hooks/*.sh

# Make hook executable
chmod +x .claude/hooks/your-hook.sh

# View hook output
.claude/hooks/your-hook.sh < test-input.json 2>&1 | tee output.log

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Hook Templates

Template 1: Basic PostToolUse Hook (v2.0)

Template 2: Blocking Quality Gate Hook (v2.0)

Template 3: Database Query Hook (v2.0)

Template 4: Git Automation Hook (v2.0)

Template 5: Logging/Metrics Hook (v2.0)

Template 6: External API Hook (v2.0)

Template 7: Notification Hook (v2.0)

Template 8: SubagentStop Hook

Template 9: Conditional Multi-Action Hook (v2.0)

Template 10: Dependency Check

Template 11: Error Handling Hook

Configuration Combination Examples (v2.0)

Template 12: Cascade Event Responder (v2.0 - Opinionated)

Template 13: Flow-Aware Quality Gate (v2.0)

Template 14: Custom Event Handler (v2.0)

Template 15: Cascade Event Logger (v2.0)

Template 16: Progressive Disclosure Hook (v2.0 - Conservative)

Usage Tips

Debugging Commands

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