Add config file support for hook backend URL

Hooks now read backend URL from ~/.claude/monitor_url config file,
making it easier to configure for remote/VM deployments without
relying on environment variables.

Priority order:
1. Config file (~/.claude/monitor_url)
2. Environment variable (CLAUDE_MONITOR_URL)
3. Default (http://localhost:8000)

This fixes the issue where Claude Code doesn't see environment
variables when not started from a configured shell.

Usage:
  echo "http://your-vm:8000" > ~/.claude/monitor_url
  cp .claude/hooks/*.sh ~/.claude/hooks/
  chmod +x ~/.claude/hooks/*.sh

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.claude/hooks/README.md

@@ -8,7 +8,7 @@ These hooks capture Claude Code events and send them to the monitoring backend.
 
 ```bash
 # Copy hooks to Claude Code directory
-cp -r .claude/hooks/* ~/.claude/hooks/
+cp .claude/hooks/*.sh ~/.claude/hooks/
 
 # Make hooks executable
 chmod +x ~/.claude/hooks/*.sh
@@ -18,30 +18,54 @@ The hooks will automatically use `http://localhost:8000` as the backend URL.
 
 ### Remote/VM Installation
 
+**Method 1: Config File (Recommended)**
+
+Create a config file with your backend URL:
+
+```bash
+# Set backend URL in config file
+echo "http://your-vm-ip:8000" > ~/.claude/monitor_url
+
+# Or for specific domain
+echo "http://monitor.example.com:8000" > ~/.claude/monitor_url
+
+# Copy and enable hooks
+cp .claude/hooks/*.sh ~/.claude/hooks/
+chmod +x ~/.claude/hooks/*.sh
+```
+
+**Method 2: Environment Variable**
+
 For remote installations, set the `CLAUDE_MONITOR_URL` environment variable:
 
 ```bash
 # Add to your shell profile (~/.bashrc, ~/.zshrc, etc.)
 export CLAUDE_MONITOR_URL="http://your-vm-ip:8000"
 
-# Or for a specific domain
+# IMPORTANT: Restart terminal or run
-export CLAUDE_MONITOR_URL="http://monitor.example.com:8000"
+source ~/.bashrc
 
 # Then copy and enable hooks
-cp -r .claude/hooks/* ~/.claude/hooks/
+cp .claude/hooks/*.sh ~/.claude/hooks/
 chmod +x ~/.claude/hooks/*.sh
 ```
 
-### Docker Deployment with Port 3000
+**Priority Order:**
+1. Config file (`~/.claude/monitor_url`) - highest priority
+2. Environment variable (`CLAUDE_MONITOR_URL`)
+3. Default (`http://localhost:8000`)
 
-If you're running the monitor with Docker (frontend on port 3000), use:
+### Docker Deployment Examples
 
 ```bash
-# For VM with IP 192.168.1.100
+# Backend on port 8000
-export CLAUDE_MONITOR_URL="http://192.168.1.100:8000"
+echo "http://192.168.1.100:8000" > ~/.claude/monitor_url
 
-# Or if backend is exposed via nginx on port 3000
+# Backend via nginx on port 3000
-export CLAUDE_MONITOR_URL="http://192.168.1.100:3000"
+echo "http://192.168.1.100:3000" > ~/.claude/monitor_url
+
+# With domain
+echo "http://monitor.example.com:8000" > ~/.claude/monitor_url
 ```
 
 ## Verification

.claude/hooks/configure.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+# Configure Claude Code Monitor hooks with custom backend URL
+
+set -e
+
+# Get backend URL from user or use localhost
+read -p "Enter backend URL (default: http://localhost:8000): " BACKEND_URL
+BACKEND_URL=${BACKEND_URL:-http://localhost:8000}
+
+echo "Configuring hooks to use: $BACKEND_URL"
+
+# Create temporary directory
+TEMP_DIR=$(mktemp -d)
+trap "rm -rf $TEMP_DIR" EXIT
+
+# Copy hooks to temp directory
+cp *.sh "$TEMP_DIR/"
+
+# Update each hook with the configured URL
+for hook in "$TEMP_DIR"/*.sh; do
+    if [ -f "$hook" ] && [ "$(basename "$hook")" != "configure.sh" ]; then
+        # Replace the MONITOR_URL line with hardcoded URL
+        sed -i.bak "s|MONITOR_URL=\"\${CLAUDE_MONITOR_URL:-http://localhost:8000}\"|MONITOR_URL=\"$BACKEND_URL\"|g" "$hook"
+        rm -f "${hook}.bak"
+    fi
+done
+
+# Install to ~/.claude/hooks/
+mkdir -p ~/.claude/hooks
+cp "$TEMP_DIR"/*.sh ~/.claude/hooks/
+chmod +x ~/.claude/hooks/*.sh
+
+echo "✓ Hooks installed and configured successfully!"
+echo "✓ Backend URL: $BACKEND_URL"
+echo ""
+echo "Test with:"
+echo "  echo '{\"session_id\":\"test\",\"timestamp\":1234567890}' | ~/.claude/hooks/session_start.sh"

.claude/hooks/post_tool_use.sh

@@ -33,8 +33,12 @@ PAYLOAD=$(jq -n \
   }')
 
 # Send to backend API (asynchronous, non-blocking)
-# Use CLAUDE_MONITOR_URL environment variable or default to localhost
+# Priority: 1) Config file, 2) Environment variable, 3) Default localhost
-MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+if [ -f ~/.claude/monitor_url ]; then
+  MONITOR_URL=$(cat ~/.claude/monitor_url)
+else
+  MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+fi
 
 curl -X POST \
   -H "Content-Type: application/json" \

.claude/hooks/pre_tool_use.sh

@@ -27,8 +27,12 @@ PAYLOAD=$(jq -n \
   }')
 
 # Send to backend API (asynchronous, non-blocking)
-# Use CLAUDE_MONITOR_URL environment variable or default to localhost
+# Priority: 1) Environment variable, 2) Config file, 3) Default localhost
-MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+if [ -f ~/.claude/monitor_url ]; then
+  MONITOR_URL=$(cat ~/.claude/monitor_url)
+else
+  MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+fi
 
 curl -X POST \
   -H "Content-Type: application/json" \

.claude/hooks/session_end.sh

@@ -21,8 +21,12 @@ PAYLOAD=$(jq -n \
   }')
 
 # Send to backend API (asynchronous, non-blocking)
-# Use CLAUDE_MONITOR_URL environment variable or default to localhost
+# Priority: 1) Config file, 2) Environment variable, 3) Default localhost
-MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+if [ -f ~/.claude/monitor_url ]; then
+  MONITOR_URL=$(cat ~/.claude/monitor_url)
+else
+  MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+fi
 
 curl -X POST \
   -H "Content-Type: application/json" \

.claude/hooks/session_start.sh

@@ -21,8 +21,12 @@ PAYLOAD=$(jq -n \
   }')
 
 # Send to backend API (asynchronous, non-blocking)
-# Use CLAUDE_MONITOR_URL environment variable or default to localhost
+# Priority: 1) Config file, 2) Environment variable, 3) Default localhost
-MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+if [ -f ~/.claude/monitor_url ]; then
+  MONITOR_URL=$(cat ~/.claude/monitor_url)
+else
+  MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+fi
 
 curl -X POST \
   -H "Content-Type: application/json" \

.claude/hooks/subagent_stop.sh

@@ -24,8 +24,12 @@ PAYLOAD=$(jq -n \
   }')
 
 # Send to backend API (asynchronous, non-blocking)
-# Use CLAUDE_MONITOR_URL environment variable or default to localhost
+# Priority: 1) Config file, 2) Environment variable, 3) Default localhost
-MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+if [ -f ~/.claude/monitor_url ]; then
+  MONITOR_URL=$(cat ~/.claude/monitor_url)
+else
+  MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+fi
 
 curl -X POST \
   -H "Content-Type: application/json" \

.claude/hooks/user_prompt.sh

@@ -27,8 +27,12 @@ PAYLOAD=$(jq -n \
   }')
 
 # Send to backend API (asynchronous, non-blocking)
-# Use CLAUDE_MONITOR_URL environment variable or default to localhost
+# Priority: 1) Config file, 2) Environment variable, 3) Default localhost
-MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+if [ -f ~/.claude/monitor_url ]; then
+  MONITOR_URL=$(cat ~/.claude/monitor_url)
+else
+  MONITOR_URL="${CLAUDE_MONITOR_URL:-http://localhost:8000}"
+fi
 
 curl -X POST \
   -H "Content-Type: application/json" \