minimax-music-gen

Files (2)

• SKILL.md
• prompt_guide.md · references/

SKILL.md (first lines)

# MiniMax Music Generation Skill

Generate songs (vocal or instrumental) using the MiniMax Music API. Supports two creation
modes: **Basic** (one-sentence-in, song-out) and **Advanced Control** (edit lyrics, refine
prompt, plan before generating).

## Prerequisites

- **mmx CLI** (required): Music generation uses the `mmx` command-line tool.

  **Check if installed:**
  ```bash
  command -v mmx && mmx --version || echo "mmx not found"
  ```

  **Install (requires Node.js):**
  ```bash
  npm install -g mmx-cli
  ```

  **Authenticate (first time only):**
  ```bash
  mmx auth login --api-key <your-minimax-api-key>
  ```
  The API key can be obtained from [MiniMax Platform](https://platform.minimaxi.com/).
  Credentials are saved to `~/.mmx/credentials.json` and persist across sessions.

  **Verify:**
  ```bash
  mmx quota show
  ```

- **Audio player** (recommended): `mpv`, `ffplay`, or `afplay` (macOS built-in) for local
  playback. `mpv` is preferred for its interactive controls.

## CLI Tool

This skill uses the `mmx` CLI for all music generation:

- **Music Generation**: `mmx music generate` — model: `music-2.6-free`
  - Supports `--lyrics-optimizer` to auto-generate lyrics from prompt
  - Supports `--instrumental` for instrumental tracks
  - Supports `--lyrics` for user-provided lyrics
  - Structured params: `--genre`, `--mood`, `--vocals`, `--instruments`, `--bpm`, `--key`, `--tempo`, `--structure`, `--references`
  
- **Cover**: `mmx music cover` — model: `music-cover-free`
  - Takes reference audio via `--audio-file <path>` or `--audio <url>`
  - `--prompt` describes the target cover style

**Agent flags**: Always add `--quiet --non-interactive` when calling mmx from agents.

**Pipeline**:
- Vocal: `User description -> mmx music generate --lyrics-optimizer -> MP3`
- Instrumental: `User description -> mmx music generate --instrumental -> MP3`
- Cover: `Source audio + style -> mmx music cover -> MP3`

## Storage

All generated music is saved to `~/Music/minimax-gen/`. Create the directory if it doesn't
exist. Files are named with a timestamp and a short slug derived from the prompt:
`YYYYMMDD_HHMMSS_<slug>.mp3`

---

## Language & Interaction

Detect the user's language from their first message and respond in that language for the
entire session. This applies to all interaction text, questions, confirmations, and feedback
prompts.

**User-facing text localization rule**:
- ALL text shown to the user — including preview labels, field names, confirmations, status
  messages, playback info, feedback prompts, **and the prompt/description preview** — MUST
  be fully translated into the user's language.
- The **API prompt** sent to the model should always be written in English for best
  generation quality. However, when previewing the prompt to the user, show a localized
  description in the user's language instead of the raw English prompt. The English prompt
  is an internal implementation detail — the user does not need to see it.
- The templates below are written in English as reference. At runtime, translate every label
  and message into the user's detected language.

**Lyrics language rule**:
- Default lyrics language = the user's language. A Chinese-speaking user gets Chinese lyrics;
  an English-speaking user gets English lyrics.
- Only generate lyrics in a different language if the user **explicitly** requests it.
- When a different lyrics language is needed, embed it naturally into the vocal or genre
  description in the prompt. For example, instead of appending "with Korean lyrics", use
  "featuring a Korean female vocalist" or specify a genre that implies the language (e.g.,
  "K-pop", "J-rock", "Mandopop", "Latin pop").

---

## Workflow

### Step 0: Detect Intent

Parse the user's message to determine:

1. **Song category**: vocal (with lyrics), instrumental (no vocals), or cover
2. **Creation mode preference**: did they provide detailed requirements (Advanced) or a
   casual one-liner (Basic)?

If ambiguous, ask using this decision tree:

```
Q1: What type of music?
  - Vocal (with lyrics)
  - Instrumental (no vocals)
  - Cover

Q2: Creation mode?
  - Basic — one-line description, auto-generate
  - Advanced — edit lyrics, refine prompt, plan
```

If the user gives a clear one-liner like "make me a sad piano piece", skip the questions —
infer instrumental + basic mode and proceed.

---

From MiniMax-AI/skills, MIT.

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