SKILL.md

name	mmx-cli
description	Use mmx to generate text, images, video, speech, and music via the MiniMax AI platform. Use when the user wants to create media content, chat with MiniMax models, perform web search, or manage MiniMax API resources from the terminal.

MiniMax CLI — Agent Skill Guide

Use mmx to generate text, images, video, speech, music, and perform web search via the MiniMax AI platform.

Prerequisites

# Install
npm install -g mmx-cli

# Auth (OAuth persists to ~/.mmx/credentials.json, API key persists to ~/.mmx/config.json)
mmx auth login --api-key sk-xxxxx

# Verify active auth source
mmx auth status

# Or pass per-call
mmx text chat --api-key sk-xxxxx --message "Hello"

Region is auto-detected. Override with --region global or --region cn.

---

Agent Flags

Always use these flags in non-interactive (agent/CI) contexts:

Flag	Purpose
--non-interactive	Fail fast on missing args instead of prompting
--quiet	Suppress spinners/progress; stdout is pure data
--output json	Machine-readable JSON output
--async	Return task ID immediately (video generation)
--dry-run	Preview the API request without executing
--yes	Skip confirmation prompts

---

Commands

text chat

Chat completion. Default model: MiniMax-M2.7.

mmx text chat --message <text> [flags]

Flag	Type	Description
--message <text>	string, required, repeatable	Message text. Prefix with role: to set role (e.g. "system:You are helpful", "user:Hello")
--messages-file <path>	string	JSON file with messages array. Use - for stdin
--system <text>	string	System prompt
--model <model>	string	Model ID (default: MiniMax-M2.7)
--max-tokens <n>	number	Max tokens (default: 4096)
--temperature <n>	number	Sampling temperature (0.0, 1.0]
--top-p <n>	number	Nucleus sampling threshold
--stream	boolean	Stream tokens (default: on in TTY)
--tool <json-or-path>	string, repeatable	Tool definition JSON or file path

# Single message
mmx text chat --message "user:What is MiniMax?" --output json --quiet

# Multi-turn
mmx text chat \
  --system "You are a coding assistant." \
  --message "user:Write fizzbuzz in Python" \
  --output json

# From file
cat conversation.json | mmx text chat --messages-file - --output json

stdout: response text (text mode) or full response object (json mode).

---

image generate

Generate images. Model: image-01.

mmx image generate --prompt <text> [flags]

Flag	Type	Description
--prompt <text>	string, required	Image description
--aspect-ratio <ratio>	string	e.g. 16:9, 1:1. Ignored if --width and --height are both set
--n <count>	number	Number of images (default: 1)
--seed <n>	number	Random seed for reproducible generation
--width <px>	number	Width in pixels (512–2048, multiple of 8). Requires --height
--height <px>	number	Height in pixels (512–2048, multiple of 8). Requires --width
--prompt-optimizer	boolean	Optimize prompt before generation
--aigc-watermark	boolean	Embed AI-generated content watermark
--subject-ref <params>	string	Subject reference: type=character,image=path-or-url
--response-format <format>	string	url (default) or base64. Base64 bypasses CDN download
--out-dir <dir>	string	Download images to directory
--out-prefix <prefix>	string	Filename prefix (default: image)

mmx image generate --prompt "A cat in a spacesuit" --output json --quiet
# stdout: image URLs (one per line in quiet mode)

mmx image generate --prompt "Logo" --n 3 --out-dir ./gen/ --quiet
# stdout: saved file paths (one per line)

---

video generate

Generate video. Default model: MiniMax-Hailuo-2.3. This is an async task — by default it polls until completion.

mmx video generate --prompt <text> [flags]

Flag	Type	Description
--prompt <text>	string, required	Video description
--model <model>	string	MiniMax-Hailuo-2.3 (default) or MiniMax-Hailuo-2.3-Fast
--first-frame <path-or-url>	string	First frame image
--callback-url <url>	string	Webhook URL for completion
--download <path>	string	Save video to specific file
--async	boolean	Return task ID immediately
--no-wait	boolean	Same as --async
--poll-interval <seconds>	number	Polling interval (default: 5)

# Non-blocking: get task ID
mmx video generate --prompt "A robot." --async --quiet
# stdout: {"taskId":"..."}

# Blocking: wait and get file path
mmx video generate --prompt "Ocean waves." --download ocean.mp4 --quiet
# stdout: ocean.mp4

video task get

Query status of a video generation task.

mmx video task get --task-id <id> [--output json]

video download

Download a completed video by task ID.

mmx video download --file-id <id> [--out <path>]

---

speech synthesize

Text-to-speech. Default model: speech-2.8-hd. Max 10k chars.

mmx speech synthesize --text <text> [flags]

Flag	Type	Description
--text <text>	string	Text to synthesize
--text-file <path>	string	Read text from file. Use - for stdin
--model <model>	string	speech-2.8-hd (default), speech-2.6, speech-02
--voice <id>	string	Voice ID (default: English_expressive_narrator)
--speed <n>	number	Speed multiplier
--volume <n>	number	Volume level
--pitch <n>	number	Pitch adjustment
--format <fmt>	string	Audio format (default: mp3)
--sample-rate <hz>	number	Sample rate (default: 32000)
--bitrate <bps>	number	Bitrate (default: 128000)
--channels <n>	number	Audio channels (default: 1)
--language <code>	string	Language boost
--subtitles	boolean	Download and save subtitles as .srt file (alongside --out audio file). API must support subtitles for the selected model.
--pronunciation <from/to>	string, repeatable	Custom pronunciation
--sound-effect <effect>	string	Add sound effect
--out <path>	string	Save audio to file
--stream	boolean	Stream raw audio to stdout

mmx speech synthesize --text "Hello world" --out hello.mp3 --quiet
# stdout: hello.mp3

mmx speech synthesize --text "Hello" --subtitles --out hello.mp3
# saves hello.mp3 + hello.srt (SRT subtitle file)

echo "Breaking news." | mmx speech synthesize --text-file - --out news.mp3

---

music generate

Generate music. Responds well to rich, structured descriptions.

Model: music-2.6-free — unlimited for API key users, RPM = 3.

mmx music generate --prompt <text> [--lyrics <text>] [flags]

Flag	Type	Description
--prompt <text>	string	Music style description (can be detailed)
--lyrics <text>	string	Song lyrics with structure tags. Required unless --instrumental or --lyrics-optimizer is used.
--lyrics-file <path>	string	Read lyrics from file. Use - for stdin
--lyrics-optimizer	boolean	Auto-generate lyrics from prompt. Cannot be used with --lyrics or --instrumental.
--instrumental	boolean	Generate instrumental music (no vocals). Cannot be used with --lyrics.
--vocals <text>	string	Vocal style, e.g. "warm male baritone", "bright female soprano", "duet with harmonies"
--genre <text>	string	Music genre, e.g. folk, pop, jazz
--mood <text>	string	Mood or emotion, e.g. warm, melancholic, uplifting
--instruments <text>	string	Instruments to feature, e.g. "acoustic guitar, piano"
--tempo <text>	string	Tempo description, e.g. fast, slow, moderate
--bpm <number>	number	Exact tempo in beats per minute
--key <text>	string	Musical key, e.g. C major, A minor, G sharp
--avoid <text>	string	Elements to avoid in the generated music
--use-case <text>	string	Use case context, e.g. "background music for video", "theme song"
--structure <text>	string	Song structure, e.g. "verse-chorus-verse-bridge-chorus"
--references <text>	string	Reference tracks or artists, e.g. "similar to Ed Sheeran"
--extra <text>	string	Additional fine-grained requirements
--aigc-watermark	boolean	Embed AI-generated content watermark
--format <fmt>	string	Audio format (default: mp3)
--sample-rate <hz>	number	Sample rate (default: 44100)
--bitrate <bps>	number	Bitrate (default: 256000)
--out <path>	string	Save audio to file
--stream	boolean	Stream raw audio to stdout

At least one of --prompt or --lyrics is required.

# With lyrics
mmx music generate --prompt "Upbeat pop" --lyrics "La la la..." --out song.mp3 --quiet

# Auto-generate lyrics from prompt
mmx music generate --prompt "Upbeat pop about summer" --lyrics-optimizer --out summer.mp3 --quiet

# Instrumental
mmx music generate --prompt "Cinematic orchestral, building tension" --instrumental --out bgm.mp3 --quiet

# Detailed prompt with vocal characteristics
mmx music generate --prompt "Warm morning folk" \
  --vocals "male and female duet, harmonies in chorus" \
  --instruments "acoustic guitar, piano" \
  --bpm 95 \
  --lyrics-file song.txt \
  --out duet.mp3

---

music cover

Generate a cover version of a song based on reference audio.

Model: music-cover-free — unlimited for API key users, RPM = 3.

mmx music cover --prompt <text> (--audio <url> | --audio-file <path>) [flags]

Flag	Type	Description
--prompt <text>	string, required	Target cover style, e.g. "Indie folk, acoustic guitar, warm male vocal"
--audio <url>	string	URL of reference audio (mp3, wav, flac, etc. — 6s to 6min, max 50MB)
--audio-file <path>	string	Local reference audio file (auto base64-encoded)
--lyrics <text>	string	Cover lyrics. If omitted, extracted from reference audio via ASR.
--lyrics-file <path>	string	Read lyrics from file. Use - for stdin
--seed <number>	number	Random seed 0–1000000 for reproducible results
--format <fmt>	string	Audio format: mp3, wav, pcm (default: mp3)
--sample-rate <hz>	number	Sample rate (default: 44100)
--bitrate <bps>	number	Bitrate (default: 256000)
--channel <n>	number	Channels: 1 (mono) or 2 (stereo, default)
--out <path>	string	Save audio to file
--stream	boolean	Stream raw audio to stdout

# Cover from URL
mmx music cover --prompt "Indie folk, acoustic guitar, warm male vocal" \
  --audio https://filecdn.minimax.chat/public/d20eda57-2e36-45bf-9e12-82d9f2e69a86.mp3 --out cover.mp3 --quiet

# Cover from local file with custom lyrics
mmx music cover --prompt "Jazz, piano, slow" \
  --audio-file original.mp3 --lyrics-file lyrics.txt --out jazz_cover.mp3 --quiet

# Reproducible result with seed
mmx music cover --prompt "Pop, upbeat" --audio https://filecdn.minimax.chat/public/d20eda57-2e36-45bf-9e12-82d9f2e69a86.mp3 --seed 42 --out cover.mp3

---

vision describe

Image understanding via VLM. Provide either --image or --file-id, not both.

mmx vision describe (--image <path-or-url> | --file-id <id>) [flags]

Flag	Type	Description
--image <path-or-url>	string	Local path or URL (auto base64-encoded)
--file-id <id>	string	Pre-uploaded file ID (skips base64)
--prompt <text>	string	Question about the image (default: "Describe the image.")

mmx vision describe --image photo.jpg --prompt "What breed?" --output json

stdout: description text (text mode) or full response (json mode).

---

search query

Web search via MiniMax.

mmx search query --q <query>

Flag	Type	Description
--q <query>	string, required	Search query

mmx search query --q "MiniMax AI" --output json --quiet

---

quota show

Display Token Plan usage and remaining quotas.

mmx quota show [--output json]

---

Tool Schema Export

Export all commands as Anthropic/OpenAI-compatible JSON tool schemas:

# All tool-worthy commands (excludes auth/config/update)
mmx config export-schema

# Single command
mmx config export-schema --command "video generate"

Use this to dynamically register mmx commands as tools in your agent framework.

---

Exit Codes

Code	Meaning
0	Success
1	General error
2	Usage error (bad flags, missing args)
3	Authentication error
4	Quota exceeded
5	Timeout
10	Content filter triggered

---

Piping Patterns

# stdout is always clean data — safe to pipe
mmx text chat --message "Hi" --output json | jq '.content'

# stderr has progress/spinners — discard if needed
mmx video generate --prompt "Waves" 2>/dev/null

# Chain: generate image → describe it
URL=$(mmx image generate --prompt "A sunset" --quiet)
mmx vision describe --image "$URL" --quiet

# Async video workflow
TASK=$(mmx video generate --prompt "A robot" --async --quiet | jq -r '.taskId')
mmx video task get --task-id "$TASK" --output json
mmx video download --task-id "$TASK" --out robot.mp4

---

Configuration Precedence

CLI flags → environment variables → ~/.mmx/config.json → defaults.

# Persistent config
mmx config set --key region --value cn
mmx config show

# Environment
export MINIMAX_API_KEY=sk-xxxxx
export MINIMAX_REGION=cn

Default Model Configuration

Set per-modality defaults so you don't need --model every time:

# Set defaults
mmx config set --key default-text-model --value MiniMax-M2.7-highspeed
mmx config set --key default-speech-model --value speech-2.8-hd
mmx config set --key default-video-model --value MiniMax-Hailuo-2.3
mmx config set --key default-music-model --value music-2.6

# Use without --model
mmx text chat --message "Hello"
mmx speech synthesize --text "Hello" --out hello.mp3
mmx video generate --prompt "Ocean waves"
mmx music generate --prompt "Upbeat pop" --instrumental

# --model still overrides per-call
mmx text chat --model MiniMax-M2.7 --message "Hello"

Resolution priority: --model flag > config default > hardcoded fallback.