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Migrate to Claude Agent SDK framework (v0.2.0)

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BREAKING CHANGE: Replaced FastAPI server wrapper with direct Claude Agent SDK integration

## Major Changes

### Architecture
- **OLD:** Bot → FastAPI Server → claude-code-sdk → Claude
- **NEW:** Bot → Claude Agent SDK → Claude (Pro subscription OR API)
- Eliminated HTTP server overhead
- Single-process architecture

### LLM Backend (llm_interface.py)
- Implemented Claude Agent SDK as DEFAULT mode
- Added three-mode architecture:
  - agent-sdk (default) - Uses Pro subscription
  - direct-api - Pay-per-token Anthropic API
  - legacy-server - Backward compat with old setup
- Created async/sync bridge using anyio
- Preserved all existing functionality (17 tools, memory, scheduling)

### Dependencies (requirements.txt)
- Replaced: claude-code-sdk → claude-agent-sdk>=0.1.0
- Added: anyio>=4.0.0 for async bridging
- Removed: fastapi, uvicorn (no longer needed for default mode)

### New Files
- ajarbot.py - Unified launcher with pre-flight checks
- run.bat - Windows one-command launcher (auto-setup)
- pyproject.toml - Python package metadata
- MIGRATION.md - Upgrade guide from old setup
- AGENT_SDK_IMPLEMENTATION.md - Technical documentation
- QUICK_REFERENCE_AGENT_SDK.md - Quick reference card
- test_agent_sdk.py - Comprehensive test suite

### Updated Documentation
- CLAUDE_CODE_SETUP.md - Rewritten for Agent SDK
- README.md - Updated quick start for new default
- .env.example - Added AJARBOT_LLM_MODE configuration

### Deleted Files
- claude_code_server.py - Replaced by agent-sdk integration
- heartbeat.py - Superseded by scheduled_tasks.py
- pulse_brain.py - Unused in production

## Migration Path

Old setup:
1. Start FastAPI server: python claude_code_server.py
2. Start bot: python bot_runner.py
3. Set USE_CLAUDE_CODE_SERVER=true

New setup:
1. Run: run.bat (or python ajarbot.py)
   - That's it! Single command.

## Benefits

✅ Zero API costs (uses Claude Pro subscription)
✅ Simplified deployment (no separate server)
✅ Single-command launch (run.bat)
✅ Faster response times (no HTTP overhead)
✅ All functionality preserved (17 tools, memory, adapters)
✅ Backward compatible (old env vars still work)

## Compatibility

- Python 3.10+ required
- Node.js required (for Claude Code CLI bundled with SDK)
- Windows 11 tested and optimized
- All existing tools, memory system, and adapters unchanged

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Jordan Ramos
2026-02-15 10:03:11 -07:00
parent a8665d8c72
commit ce2c384387
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# Migration Guide: Agent SDK Implementation
## Quick Start (TL;DR)
### For New Users
```bash
# 1. Install dependencies
pip install -r requirements.txt
# 2. Run the bot (Agent SDK is the default)
python bot_runner.py
```
### For Existing Users
```bash
# 1. Update dependencies
pip install -r requirements.txt
# 2. That's it! The bot will automatically use Agent SDK
# Your existing .env settings are preserved
```
## Detailed Migration Steps
### Step 1: Understand Your Current Setup
Check your `.env` file:
```bash
cat .env
```
**Scenario A: Using Direct API (Pay-per-token)**
```env
ANTHROPIC_API_KEY=sk-ant-...
# No USE_CLAUDE_CODE_SERVER variable, or it's set to false
```
**Scenario B: Using Legacy Claude Code Server**
```env
USE_CLAUDE_CODE_SERVER=true
CLAUDE_CODE_SERVER_URL=http://localhost:8000
```
### Step 2: Choose Your Migration Path
#### Option 1: Migrate to Agent SDK (Recommended)
**Benefits:**
- Uses Claude Pro subscription (no per-token costs)
- Same speed as Direct API
- No separate server process required
- All features work identically
**Steps:**
1. Install dependencies:
```bash
pip install -r requirements.txt
```
2. Update `.env` (optional - SDK is default):
```env
# Remove or comment out old settings
# USE_CLAUDE_CODE_SERVER=false
# CLAUDE_CODE_SERVER_URL=http://localhost:8000
# Agent SDK is enabled by default, but you can be explicit:
USE_AGENT_SDK=true
# Keep your API key for fallback (optional)
ANTHROPIC_API_KEY=sk-ant-...
```
3. Run the bot:
```bash
python bot_runner.py
```
4. Verify Agent SDK is active:
```
[LLM] Using Claude Agent SDK (Pro subscription)
```
#### Option 2: Keep Using Direct API
**When to use:**
- You don't have Claude Pro subscription
- You prefer pay-per-token billing
- You need to track exact API usage costs
**Steps:**
1. Install dependencies:
```bash
pip install -r requirements.txt
```
2. Update `.env`:
```env
USE_DIRECT_API=true
ANTHROPIC_API_KEY=sk-ant-...
```
3. Run the bot:
```bash
python bot_runner.py
```
4. Verify Direct API is active:
```
[LLM] Using Direct API (pay-per-token)
```
#### Option 3: Keep Using Legacy Server (Not Recommended)
**Only use if:**
- You have a custom modified `claude_code_server.py`
- You need the server for other tools/integrations
**Steps:**
1. Keep your current setup
2. The legacy server mode still works
3. No changes required
### Step 3: Test the Migration
Run the test suite:
```bash
python test_agent_sdk.py
```
Expected output:
```
=== Test 1: LLMInterface Initialization ===
✓ LLMInterface created successfully
- Mode: agent_sdk
...
Total: 5/5 tests passed
🎉 All tests passed!
```
### Step 4: Verify Bot Functionality
Test all critical features:
1. **Simple Chat:**
```
User: Hello!
Bot: [Should respond normally]
```
2. **Tool Usage:**
```
User: What files are in the current directory?
Bot: [Should use list_directory tool]
```
3. **Gmail Integration:**
```
User: Check my recent emails
Bot: [Should use read_emails tool]
```
4. **Calendar Integration:**
```
User: What's on my calendar today?
Bot: [Should use read_calendar tool]
```
5. **Scheduled Tasks:**
- Verify scheduled tasks still run
- Check `config/scheduled_tasks.yaml`
## Environment Variables Reference
### New Variables
| Variable | Default | Description |
|----------|---------|-------------|
| `USE_AGENT_SDK` | `true` | Enable Agent SDK mode (default) |
| `USE_DIRECT_API` | `false` | Force Direct API mode |
### Existing Variables (Still Supported)
| Variable | Default | Description |
|----------|---------|-------------|
| `ANTHROPIC_API_KEY` | - | API key for Direct API mode |
| `USE_CLAUDE_CODE_SERVER` | `false` | Enable legacy server mode |
| `CLAUDE_CODE_SERVER_URL` | `http://localhost:8000` | Legacy server URL |
### Priority Order
If multiple modes are enabled, the priority is:
1. `USE_DIRECT_API=true` → Direct API mode
2. `USE_CLAUDE_CODE_SERVER=true` → Legacy server mode
3. `USE_AGENT_SDK=true` (default) → Agent SDK mode
4. Agent SDK unavailable → Fallback to Direct API mode
## Troubleshooting
### Issue: "Agent SDK not available, falling back to Direct API"
**Cause:** `claude-agent-sdk` is not installed
**Solution:**
```bash
pip install claude-agent-sdk
```
### Issue: "ModuleNotFoundError: No module named 'claude_agent_sdk'"
**Cause:** Package not in requirements.txt or not installed
**Solution:**
```bash
# Verify requirements.txt has claude-agent-sdk
grep claude-agent-sdk requirements.txt
# If missing, update requirements.txt
pip install claude-agent-sdk anyio
# Or reinstall all dependencies
pip install -r requirements.txt
```
### Issue: Bot still using Direct API after migration
**Cause:** Explicit `USE_DIRECT_API=true` in `.env`
**Solution:**
```bash
# Edit .env and remove or change to false
USE_DIRECT_API=false
# Or comment out the line
# USE_DIRECT_API=true
```
### Issue: "anyio" import error
**Cause:** `anyio` package not installed (required for async/sync bridge)
**Solution:**
```bash
pip install anyio>=4.0.0
```
### Issue: Response format errors in agent.py
**Cause:** SDK response not properly converted to Message format
**Solution:**
1. Check `_convert_sdk_response_to_message()` implementation
2. Verify `TextBlock` and `ToolUseBlock` are imported
3. Run `python test_agent_sdk.py` to verify format compatibility
### Issue: Tool execution fails with Agent SDK
**Cause:** Agent SDK might not be returning expected tool format
**Solution:**
1. Check `_agent_sdk_chat_with_tools()` method
2. Verify tool definitions are passed correctly
3. Add debug logging:
```python
print(f"SDK Response: {sdk_response}")
```
## Rollback Plan
If you need to rollback to the old system:
### Rollback to Direct API
```env
# In .env
USE_DIRECT_API=true
USE_AGENT_SDK=false
ANTHROPIC_API_KEY=sk-ant-...
```
### Rollback to Legacy Server
```env
# In .env
USE_CLAUDE_CODE_SERVER=true
CLAUDE_CODE_SERVER_URL=http://localhost:8000
# Start the server
python claude_code_server.py
```
### Rollback Code (if needed)
```bash
# Reinstall old dependencies (FastAPI/Uvicorn)
pip install fastapi>=0.109.0 uvicorn>=0.27.0
# Revert to old requirements.txt (backup needed)
git checkout HEAD~1 requirements.txt
pip install -r requirements.txt
```
## Frequently Asked Questions
### Q: Will this increase my costs?
**A:** If you have Claude Pro, **costs will decrease to $0** for LLM calls. If you don't have Pro, you can keep using Direct API mode.
### Q: Will this break my existing bot setup?
**A:** No. All functionality is preserved:
- All 17 tools work identically
- Scheduled tasks unchanged
- Adapters (Telegram, Slack) unchanged
- Memory system unchanged
- Self-healing system unchanged
### Q: Can I switch modes dynamically?
**A:** Not currently. You need to set the mode in `.env` and restart the bot.
### Q: Will usage tracking still work?
**A:** Usage tracking is disabled for Agent SDK mode (no costs to track). It still works for Direct API mode.
### Q: What about prompt caching?
**A:** Prompt caching currently works only in Direct API mode. Agent SDK support may be added in the future.
### Q: Can I use different modes for different bot instances?
**A:** Yes! Each bot instance reads `.env` independently. You can run multiple bots with different modes.
## Migration Checklist
Use this checklist to ensure a smooth migration:
### Pre-Migration
- [ ] Backup `.env` file
- [ ] Backup `requirements.txt`
- [ ] Note current mode (Direct API or Legacy Server)
- [ ] Verify bot is working correctly
- [ ] Document any custom configurations
### Migration
- [ ] Update `requirements.txt` (or `git pull` latest)
- [ ] Install new dependencies (`pip install -r requirements.txt`)
- [ ] Update `.env` with new variables (if needed)
- [ ] Remove old variables (if migrating from legacy server)
### Testing
- [ ] Run `python test_agent_sdk.py`
- [ ] Test simple chat
- [ ] Test tool usage (file operations)
- [ ] Test Gmail integration (if using)
- [ ] Test Calendar integration (if using)
- [ ] Test scheduled tasks
- [ ] Test with Telegram adapter (if using)
- [ ] Test with Slack adapter (if using)
### Post-Migration
- [ ] Verify mode in startup logs (`[LLM] Using Claude Agent SDK...`)
- [ ] Monitor for errors in first 24 hours
- [ ] Verify scheduled tasks still run
- [ ] Check memory system working correctly
- [ ] Document any issues or edge cases
### Cleanup (Optional)
- [ ] Remove unused legacy server code (if not needed)
- [ ] Remove `USE_CLAUDE_CODE_SERVER` from `.env`
- [ ] Uninstall FastAPI/Uvicorn (if not used elsewhere)
- [ ] Update documentation with new setup
## Support
If you encounter issues:
1. **Check logs:** Look for `[LLM]` and `[Agent]` prefixed messages
2. **Run tests:** `python test_agent_sdk.py`
3. **Check mode:** Verify startup message shows correct mode
4. **Verify dependencies:** `pip list | grep claude-agent-sdk`
5. **Check .env:** Ensure no conflicting variables
## Next Steps
After successful migration:
1. **Monitor performance:** Compare speed and response quality
2. **Track savings:** Calculate cost savings vs Direct API
3. **Report issues:** Document any bugs or edge cases
4. **Optimize:** Look for opportunities to leverage SDK features
5. **Share feedback:** Help improve the implementation
## Version History
### v1.0.0 (2026-02-15)
- Initial Agent SDK implementation
- Three-mode architecture
- Backward compatibility maintained
- Zero changes to agent.py, tools.py, adapters