Agent Skill

AI Music skill

ai-musicprime-skills/runcomfy-agent-skillsai-music/SKILL.md

Generate AI music on RunComfy via the `runcomfy` CLI — a smart router across the music-model catalog. Routes to ElevenLabs AI Music Generation (premium 44.1 kHz stereo vocal tracks, 5 s–5 min, $0.0083/s) and ACE Step / ACE Step 1.5 (StepFun-AI open-weights, tag-driven composition, multilingual lyrics, $0.0002–0.0003/s, ~27× cheaper), plus ACE Step audio-inpaint (regenerate a time range inside an existing track) and ACE Step audio-outpaint (extend a track before or after). Picks the right model for the user's actual intent — premium vocal hook, cheap background music library, multilingual pop song, repair a bad chorus, lengthen a 30 s draft into a 2 min cut — and ships each model's documented prompting patterns plus the minimal `runcomfy run` invoke. Triggers on "generate music", "make a song", "AI music", "background music", "instrumental track", "soundtrack", "jingle", "theme music", "royalty-free music", "compose", "music with lyrics", "extend music", "fix this song", "inpaint music", or any explicit ask to generate or edit music.

58MIT

always on

272 tokname + description

once used

3,591 tokSKILL.md body

bundled files

installs

367kskills.sh

Install the AI Music skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/prime-skills/runcomfy-agent-skills --skill ai-music

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/prime-skills/runcomfy-agent-skills.git /tmp/runcomfy-agent-skills
mkdir -p ~/.claude/skills
cp -R /tmp/runcomfy-agent-skills/ai-music ~/.claude/skills/ai-music

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

When	What loads	Cost
Every session	Name and description	272 tok
When the agent uses it	The SKILL.md instructions	3,591 tok
Only if opened	No bundled files	—

Until it is used, ai-music costs about 5.0× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 30 skills from prime-skills/runcomfy-agent-skills would load 5,840 tokens of descriptions. Skills vs MCP study

Checks

The description is longer than the specification's 1,024-character limit, so some agents may cut or reject it.

Pre-approved tools (allowed-tools): Bash(runcomfy *). The agent can use these without asking while the skill is active.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

AI Music
Install this skill
Powered by the RunComfy CLI
Pick the right model for the user's intent
Text-to-music (generate from scratch) — newest first
Edit existing audio — ACE Step only (ElevenLabs has no edit endpoints)
Route 1: ElevenLabs AI Music Generation — premium
Quick invoke
Route 2: ACE Step / ACE Step 1.5 — cheap, open-weights
Quick invoke
Route 3: ACE Step audio-inpaint — repair a section
Route 4: ACE Step audio-outpaint — extend a track
Common patterns
Premium brand campaign jingle (5–15 s)
Background music library at scale (50+ tracks)
Multilingual launch (same song, 8 languages)
Game loop bed
Theme song for a video
"I generated a 30 s hook but I need a 2 min track"
"My second chorus came out wrong"
Cheap draft → premium polish
Inpaint a section that doesn't fit ACE's time-range schema
Decision flow (for the agent)
Browse the full catalog

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