claude-mem/cursor-hooks

Claude-Mem Cursor Hooks Integration

Persistent AI Memory for Cursor - Free Options Available

Give your Cursor AI persistent memory across sessions. Your agent remembers what it worked on, the decisions it made, and the patterns in your codebase - automatically.

Why Claude-Mem?

• Remember context across sessions: No more re-explaining your codebase every time
• Automatic capture: MCP tools, shell commands, and file edits are logged without effort
• Free tier options: Works with Gemini (1500 free req/day) or OpenRouter (free models available)
• Works with or without Claude Code: Full functionality either way

Quick Install (5 minutes)

# Clone and build
git clone https://github.com/thedotmack/claude-mem.git
cd claude-mem && bun install && bun run build

# Interactive setup (configures provider + installs hooks)
bun run cursor:setup

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Quick Start for Cursor Users

Using Claude Code? Skip to Installation - everything works automatically.

Cursor-only (no Claude Code)? See STANDALONE-SETUP.md for free-tier options using Gemini or OpenRouter.

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Overview

The hooks bridge Cursor's hook system to claude-mem's worker API, allowing:

• Session Management: Initialize sessions and generate summaries
• Observation Capture: Record MCP tool usage, shell commands, and file edits
• Worker Readiness: Ensure the worker is running before prompt submission

Context Injection

Context is automatically injected via Cursor's Rules system:

1. Install: claude-mem cursor install generates initial context
2. Stop hook: Updates context in .cursor/rules/claude-mem-context.mdc after each session
3. Cursor: Automatically includes this rule in ALL chat sessions

The context updates after each session ends, so the next session sees fresh context.

Additional Access Methods

• MCP Tools: Configure claude-mem's MCP server for search, timeline, get_observations tools
• Web Viewer: Access context at http://localhost:37777
• Manual Request: Ask the agent to search memory

See CONTEXT-INJECTION.md for details.

Installation

Quick Install (Recommended)

# Install globally for all projects (recommended)
claude-mem cursor install user

# Or install for current project only
claude-mem cursor install

Manual Installation

Click to expand manual installation steps

User-level (recommended - applies to all projects):

# Copy hooks.json to your home directory
cp cursor-hooks/hooks.json ~/.cursor/hooks.json

# Copy hook scripts
mkdir -p ~/.cursor/hooks
cp cursor-hooks/*.sh ~/.cursor/hooks/
chmod +x ~/.cursor/hooks/*.sh

Project-level (for per-project hooks):

# Copy hooks.json to your project
mkdir -p .cursor
cp cursor-hooks/hooks.json .cursor/hooks.json

# Copy hook scripts to your project
mkdir -p .cursor/hooks
cp cursor-hooks/*.sh .cursor/hooks/
chmod +x .cursor/hooks/*.sh

After Installation

1. Start the worker:

   claude-mem start
   

2. Restart Cursor to load the hooks

3. Verify installation:

   claude-mem cursor status
   

Hook Mappings

Cursor Hook	Script	Purpose
beforeSubmitPrompt	session-init.sh	Initialize claude-mem session
beforeSubmitPrompt	context-inject.sh	Ensure worker is running
afterMCPExecution	save-observation.sh	Capture MCP tool usage
afterShellExecution	save-observation.sh	Capture shell command execution
afterFileEdit	save-file-edit.sh	Capture file edits
stop	session-summary.sh	Generate summary + update context file

How It Works

Session Initialization (session-init.sh)

• Called before each prompt submission
• Initializes a new session in claude-mem using conversation_id as the session ID
• Extracts project name from workspace root
• Outputs {"continue": true} to allow prompt submission

Context Hook (context-inject.sh)

• Ensures claude-mem worker is running before session
• Outputs {"continue": true} to allow prompt submission
• Note: Context file is updated by session-summary.sh (stop hook), not here

Observation Capture (save-observation.sh)

• Captures MCP tool executions and shell commands
• Maps them to claude-mem's observation format
• Sends to /api/sessions/observations endpoint (fire-and-forget)

File Edit Capture (save-file-edit.sh)

• Captures file edits made by the agent
• Treats edits as "write_file" tool usage
• Includes edit summaries in observations

Session Summary (session-summary.sh)

• Called when agent loop ends (stop hook)
• Requests summary generation from claude-mem
• Updates context file in .cursor/rules/claude-mem-context.mdc for next session

Configuration

The hooks read configuration from ~/.claude-mem/settings.json:

• CLAUDE_MEM_WORKER_PORT: Worker port (default: 37777)
• CLAUDE_MEM_WORKER_HOST: Worker host (default: 127.0.0.1)

Dependencies

The hook scripts require:

• jq - JSON processing
• curl - HTTP requests
• bash - Shell interpreter

Install on macOS: brew install jq curl Install on Ubuntu: apt-get install jq curl

Troubleshooting

Hooks not executing

1. Check hooks are in the correct location:

   ls .cursor/hooks.json  # Project-level
   ls ~/.cursor/hooks.json  # User-level
   

2. Verify scripts are executable:

   chmod +x ~/.cursor/hooks/*.sh
   

3. Check Cursor Settings → Hooks tab for configuration status

4. Check Hooks output channel in Cursor for error messages

Worker not responding

1. Verify worker is running:

   curl http://127.0.0.1:37777/api/readiness
   

2. Check worker logs:

   tail -f ~/.claude-mem/logs/worker-$(date +%Y-%m-%d).log
   

3. Restart worker:

   claude-mem restart
   

Observations not being saved

1. Monitor worker logs for incoming requests

2. Verify session was initialized via web viewer at http://localhost:37777

3. Test observation endpoint directly:

   curl -X POST http://127.0.0.1:37777/api/sessions/observations \
     -H "Content-Type: application/json" \
     -d '{"contentSessionId":"test","tool_name":"test","tool_input":{},"tool_response":{},"cwd":"/tmp"}'
   

Comparison with Claude Code Integration

Feature	Claude Code	Cursor
Session Initialization	✅ SessionStart hook	✅ beforeSubmitPrompt hook
Context Injection	✅ additionalContext field	✅ Auto-updated .cursor/rules/ file
Observation Capture	✅ PostToolUse hook	✅ afterMCPExecution, afterShellExecution, afterFileEdit
Session Summary	✅ Stop hook with transcript	⚠️ stop hook (no transcript)
MCP Search Tools	✅ Full support	✅ Full support (if MCP configured)

Files

• hooks.json - Hook configuration
• common.sh - Shared utility functions
• session-init.sh - Session initialization
• context-inject.sh - Context/worker readiness hook
• save-observation.sh - MCP and shell observation capture
• save-file-edit.sh - File edit observation capture
• session-summary.sh - Summary generation
• cursorrules-template.md - Template for .cursorrules file

See Also

• Claude-Mem Documentation
• Cursor Hooks Reference
• Claude-Mem Architecture