docs: update readme

README.md

@@ -0,0 +1,74 @@
+# ACE-Step-ComfyUI
+
+Official ComfyUI node for [ACE-Step](https://acemusic.ai) AI music generation via ACE-Step API.
+
+## Features
+
+- **Text to Music** — Generate music from text descriptions and lyrics
+- **Cover** — Create cover versions from source audio with style control
+- **Repaint** — Regenerate specific sections of an audio track
+
+
+## Installation
+
+### Via ComfyUI Manager
+
+Search for `ACE-Step-ComfyUI` in ComfyUI Manager and install.
+
+### Manual Installation
+
+```bash
+cd ComfyUI/custom_nodes
+git clone https://github.com/ace-step/ACE-Step-ComfyUI.git
+cd ACE-Step-ComfyUI
+pip install -r requirements.txt
+```
+
+Restart ComfyUI after installation.
+
+## Setup
+
+1. Get your API key from [acemusic.ai](https://acemusic.ai/api-key)
+2. Set the key using **one** of these methods:
+   - Enter it in the `api_key` widget on the node (auto-saved locally after first input, displayed as `●●●●` for security). The key is **not** stored in workflow JSON, so sharing workflows will not leak your API key
+   - Set the environment variable `ACESTEP_API_KEY`
+
+> **Note:** The API key is saved in the `.config/` folder under the node directory. Do not share this folder with others.
+
+## Node: ACE-Step Music Generate
+
+Located in: **api node > audio > AceStep**
+
+### Inputs
+
+| Parameter | Type | Default | Description |
+|-----------|------|---------|-------------|
+| server_url | STRING | `https://api.acemusic.ai` | ACE-Step API server URL |
+| prompt | STRING | | Music description / caption |
+| lyrics | STRING | | Song lyrics (leave empty for instrumental) |
+| task_type | ENUM | `text2music` | `text2music`, `cover`, or `repaint` |
+| instrumental | BOOLEAN | `false` | Generate instrumental only |
+| duration | FLOAT | `30.0` | Audio duration in seconds (1–300) |
+| bpm | INT | `0` | Beats per minute (0 = auto) |
+| key_scale | STRING | | Musical key and scale (e.g. `C major`) |
+| time_signature | STRING | | Time signature (e.g. `4/4`, `3/4`) |
+| vocal_language | ENUM | `en` | Vocal language |
+| sample_mode | BOOLEAN | `false` | Use LLM to generate prompt/lyrics from query |
+| use_format | BOOLEAN | `false` | Use LLM to enhance caption and lyrics |
+| seed | STRING | `-1` | Random seed (-1 = random, comma-separated for batch) |
+| temperature | FLOAT | `0.85` | Sampling temperature |
+| guidance_scale | FLOAT | `7.0` | Guidance scale |
+| src_audio | AUDIO | | Source audio for cover/repaint tasks |
+| ref_audio | AUDIO | | Reference audio for style/timbre guidance |
+| api_key | STRING | | API key (auto-saved locally) |
+
+### Outputs
+
+| Output | Type | Description |
+|--------|------|-------------|
+| audio | AUDIO | Generated audio waveform |
+| info | STRING | Text response from the API |
+
+## License
+
+[MIT](LICENSE)

nodes.py

@@ -96,15 +96,9 @@ class AceStepMusicGen:
                     "default": False,
                     "tooltip": "Use LLM to enhance caption and lyrics",
                 }),
-                "batch_size": ("INT", {
-                    "default": 1,
-                    "min": 1,
-                    "max": 2,
-                    "step": 1,
-                }),
                 "seed": ("STRING", {
                     "default": "-1",
-                    "tooltip": "Random seed (-1 = random). Comma-separated for batch (e.g. '42,123')",
+                    "tooltip": "Random seed (-1 = random)",
                 }),
                 "temperature": ("FLOAT", {
                     "default": 0.85,
@@ -217,9 +211,13 @@ class AceStepMusicGen:
             },
         }
 
-        # Seed: "-1" means random, otherwise pass as-is (supports comma-separated)
-        seed_str = seed.strip()
+        # Seed: "-1" means random, otherwise validate and take the first value
+        seed_str = seed.strip().split(",")[0].strip()
         if seed_str and seed_str != "-1":
+            try:
+                int(seed_str)
+            except ValueError:
+                raise RuntimeError(f"Invalid seed value: '{seed_str}', must be an integer")
             body["seed"] = seed_str
         if bpm > 0:
             body["audio_config"]["bpm"] = bpm