ComfyUI Downloader

Overview

A Rust-based daemon that manages AI model downloads from CivitAI for ComfyUI. Runs as a SystemD user service, exposing a Unix socket interface for model management, with a companion Tauri/Svelte desktop application.

Key Features

• Download Management — Queue processing with configurable concurrency and HTTP range request resumption
• Intelligent Routing — Automatically places checkpoints in correct subdirectories by analyzing safetensors headers for VAE/CLIP components
• Metadata & Verification — Generates .metadata.json sidecars with SHA-256 hashes and CivitAI API data
• Update Tracking — Periodic polling identifies newer model versions and sends desktop notifications
• Startup Scanning — Detects existing models via hash lookup and registers them for update tracking
• Desktop App — Tauri/Svelte GUI for managing downloads and browsing the model catalog

Architecture

The codebase is organized into:

1. Daemon — Queue, downloader, scanner, and updater components
2. IPC — Protocol, server, and client over Unix sockets
3. CivitAI Integration — API client for model metadata and downloads
4. Catalog — SQLite-backed model registry
5. CLI — comfyui-dl command-line tool for API key setup, model management, and status checks

Links

• Source Code

Technologies Used

• Rust
• Tauri + Svelte (desktop app)
• SQLite
• SystemD user services
• CivitAI API