# Comfy Agent Service

**Image & Video Generation Service for NODE3**

## Overview

Comfy Agent is a specialized service that interfaces with ComfyUI for AI-powered image and video generation. It provides both REST API and NATS messaging interfaces, enabling other agents in the DAARION ecosystem to request generation tasks.

## Architecture

```
NODE1 Agents → NATS → Comfy Agent (NODE3) → ComfyUI (port 8188)
                                           → LTX-2 Models (293 GB)
```

## Features

- **REST API**: Synchronous HTTP endpoints for generation requests
- **NATS Integration**: Async message-based communication with other agents
- **Job Queue**: Handles concurrent generation requests with configurable concurrency
- **Progress Tracking**: Real-time progress updates via WebSocket monitoring
- **Result Storage**: File-based storage with URL-based result retrieval

## API Endpoints

### POST /generate/image
Generate an image from text prompt.

**Request:**
```json
{
  "prompt": "a futuristic city of gifts, ultra-detailed, cinematic",
  "negative_prompt": "blurry, low quality",
  "width": 1024,
  "height": 1024,
  "steps": 28,
  "seed": 12345
}
```

**Response:**
```json
{
  "job_id": "job_abc123...",
  "type": "text-to-image",
  "status": "queued",
  "progress": 0.0
}
```

### POST /generate/video
Generate a video from text prompt using LTX-2.

**Request:**
```json
{
  "prompt": "a cat walking on the moon, cinematic",
  "seconds": 4,
  "fps": 24,
  "steps": 30
}
```

### GET /status/{job_id}
Check the status of a generation job.

**Response:**
```json
{
  "job_id": "job_abc123...",
  "type": "text-to-image",
  "status": "succeeded",
  "progress": 1.0,
  "result_url": "http://NODE3_IP:8880/files/job_abc123.../output.png"
}
```

### GET /result/{job_id}
Retrieve the final result (same as status).

### GET /healthz
Health check endpoint.

## NATS Integration

### Subscribed Topics

- `agent.invoke.comfy` - Main invocation channel from router
- `comfy.request.image` - Direct image generation requests
- `comfy.request.video` - Direct video generation requests

### Message Format

**Request:**
```json
{
  "type": "text-to-image",
  "workflow": {
    "1": {"class_type": "CLIPTextEncode", ...},
    "2": {"class_type": "CheckpointLoaderSimple", ...}
  }
}
```

**Response:**
```json
{
  "job_id": "job_abc123..."
}
```

## Configuration

Environment variables:

- `COMFYUI_HTTP` - ComfyUI HTTP endpoint (default: `http://127.0.0.1:8188`)
- `COMFYUI_WS` - ComfyUI WebSocket endpoint (default: `ws://127.0.0.1:8188/ws`)
- `NATS_URL` - NATS server URL (default: `nats://144.76.224.179:4222`)
- `STORAGE_PATH` - Path for result storage (default: `/data/comfy-results`)
- `PUBLIC_BASE_URL` - Public URL for accessing results (default: `http://212.8.58.133:8880/files`)
- `MAX_CONCURRENCY` - Max concurrent generations (default: `1`)

## Development

### Local Setup

```bash
cd services/comfy-agent
python -m venv venv
source venv/bin/activate  # or `venv\Scripts\activate` on Windows
pip install -r requirements.txt

# Run locally
uvicorn app.main:app --reload --port 8880
```

### Docker Build

```bash
docker build -t comfy-agent:latest .
```

### Testing

```bash
# Test image generation
curl -X POST http://localhost:8880/generate/image \
  -H "Content-Type: application/json" \
  -d '{"prompt":"a futuristic city, cyberpunk style"}'

# Check status
curl http://localhost:8880/status/job_abc123...

# Health check
curl http://localhost:8880/healthz
```

## TODO / Roadmap

1. **Workflow Templates**: Replace placeholder workflows with actual ComfyUI workflows
   - SDXL text-to-image workflow
   - LTX-2 text-to-video workflow
   - Image-to-video workflow

2. **Result Extraction**: Implement proper file extraction from ComfyUI history
   - Download images/videos via `/view` endpoint
   - Support multiple output formats (PNG, JPG, GIF, MP4)
   - Handle batch outputs

3. **Advanced Features**:
   - Workflow library management
   - Custom model loading
   - LoRA/ControlNet support
   - Batch processing
   - Queue prioritization

4. **Monitoring**:
   - Prometheus metrics
   - Grafana dashboards
   - Alert on failures
   - GPU usage tracking

5. **Storage**:
   - S3/MinIO integration for scalable storage
   - Result expiration/cleanup
   - Thumbnail generation

## Integration with Agent Registry

Add to `config/agent_registry.yml`:

```yaml
comfy:
  id: comfy
  name: Comfy
  role: Image & Video Generation Specialist
  scope: node_local
  node_id: node-3-threadripper-rtx3090
  capabilities:
    - text-to-image
    - text-to-video
    - image-to-video
    - workflow-execution
  api_endpoint: http://212.8.58.133:8880
  nats_subject: agent.invoke.comfy
```

## License

Part of the DAARION MicroDAO project.

## Maintainers

- DAARION Team
- Last Updated: 2026-02-10