Agent skill

Heartmula

by RedWoodOG in RedWoodOG/Hermes-Desktop

Set up and run HeartMuLa, the open-source music generation model family (Suno-like).

No licenceAuto-check passedMedia & Creative

Install Heartmula

skills CLI
$ npx skills add RedWoodOG/Hermes-Desktop --skill heartmula -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install RedWoodOG/Hermes-Desktop heartmula --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/RedWoodOG/Hermes-Desktop.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/media/heartmula .claude/skills/heartmula && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
heartmula
GitHub stars
177
Used in
2 other repos
Token cost
~1.6k tokens
SKILL.md length
583 words
Files
1
Skills in repo
62
Repo updated
First seen
Licence
None found

At a glance

Set up and run HeartMuLa, the open-source music generation model family (Suno-like).

  • Works in 5 steps: Clone Repository → Create Virtual Environment (Python 3.10… → Fix Dependency Compatibility Issues → …
  • Tasks that involve Music and audio generation
  • SKILL.md covers Overview, When to Use, Hardware Requirements and Installation Steps, plus 4 more sections
  • Calls uv, hf and git; reaches github.com

What it does

Heartmula is an agent skill from RedWoodOG/Hermes-Desktop. Set up and run HeartMuLa, the open-source music generation model family (Suno-like). Generates full songs from lyrics + tags with multilingual support.

Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Media & Creative, covering Music and audio generation. It works with Suno and CUDA.

When your agent uses it

  • Tasks that involve Music and audio generation

Example prompts

  • “/heartmula”

Requirements

  • Python 3

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Clone Repository
  2. Create Virtual Environment (Python 3.10 required)
  3. Fix Dependency Compatibility Issues
  4. Patch Source Code (Required for transformers 5.x)
  5. Download Model Checkpoints

What it can do on your machine

Read from SKILL.md and the folder at commit be46b39. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • uv
    • hf
    • git
    • python

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • github.com

    Also links to:

    • heartmula.github.io
    • huggingface.co
    • arxiv.org

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Heartmula loads about 1.6k tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 583 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~40
When it runs · the whole SKILL.md, loaded when a task matches
~1.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 583 words (~1,598 tokens).

“HeartMuLa is a family of open-source music foundation models (Apache-2.0) that generates music conditioned on lyrics and tags. Comparable to Suno for open-source. Includes:”

— opening of SKILL.md by RedWoodOG
name
heartmula
version
1.0.0

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/media/heartmula of RedWoodOG/Hermes-Desktop.

Open the folder on GitHubat commit be46b39

Used in 2 other repositories

We found 3 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 2 other GitHub owners. This page covers the copy in RedWoodOG/Hermes-Desktop, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Heartmula next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Heartmula compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Heartmula this skillRedWoodOG/Hermes-Desktop1772 repos~1.6kAutomated safety check: PassNone
HeartmulaLuciole-Studio/Misaka-Agent1712 repos~1.6kAutomated safety check: PassMIT
AI Music And Soundsocial-media-skills/skills134—~1.9kAutomated safety check: PassMIT
Prismer Songwriting And AI MusicPrismer-AI/PrismerCloud1.6k6 repos~2.9kAutomated safety check: PassMIT
Audio Jinglesanqiufong/slides-from-anything1321 repos~1.1kAutomated safety check: PassApache-2.0
AudioCraft Audio GenerationOrchestra-Research/AI-Research-SKILLs13k8 repos~3.9kAutomated safety check: PassMIT

Similar skills

  • Heartmula

    Luciole-Studio/Misaka-Agent

    HeartMuLa: Suno-like song generation from lyrics + tags. An agent skill from Luciole-Studio/Misaka-Agent.

    171 GitHub starsUsed in 2 repos~1.6k tokens
    Media & CreativeAuto-check passed
  • AI Music And Sound

    social-media-skills/skills

    The AI music + sound-design skill for social -- original/licensed audio beds and sound design for Reels/TikToks/Shorts/videos.

    134 GitHub stars~1.9k tokensUpdated 9 days ago
    Media & CreativeAuto-check passed
  • Prismer Songwriting And AI Music

    Prismer-AI/PrismerCloud

    Songwriting craft and Suno AI music prompts. An agent skill from Prismer-AI/PrismerCloud.

    1.6k GitHub starsUsed in 6 repos~2.9k tokens
    Media & CreativeAuto-check passed
  • Audio Jingle

    sanqiufong/slides-from-anything

    Audio generation skill — jingles, beds, voiceover, and sound effects.

    132 GitHub starsUsed in 1 repo~1.1k tokens
    Media & CreativeAuto-check passed
  • AudioCraft Audio Generation

    Orchestra-Research/AI-Research-SKILLs

    Generates music from text descriptions with MusicGen and sound effects with AudioGen, using Meta's AudioCraft PyTorch library with melody and style conditioning.

    13k GitHub starsUsed in 8 repos~3.9k tokens
    Media & CreativeAuto-check passed
  • Music

    tadaspetra/loop

    Generate music using ElevenLabs Music API. An agent skill from tadaspetra/loop.

    296 GitHub starsUsed in 2 repos~827 tokens
    Media & CreativeAuto-check passed

More from RedWoodOG/Hermes-Desktop

All 62 skills in this repo
  • Excalidraw

    RedWoodOG/Hermes-Desktop

    Create hand-drawn style diagrams using Excalidraw JSON format.

    177 GitHub starsUsed in 5 repos~1.8k tokens
    Auto-check passed
  • Obliteratus

    RedWoodOG/Hermes-Desktop

    Remove refusal behaviors from open-weight LLMs using OBLITERATUS — mechanistic interpretability techniques (diff-in-means, SVD, whitened SVD, LEACE, SAE decomposition, etc.) to excise guardrails…

    177 GitHub starsUsed in 5 repos~3.8k tokens
    Auto-check passed
  • Ascii Video

    RedWoodOG/Hermes-Desktop

    Production pipeline for ASCII art video — any format. An agent skill from RedWoodOG/Hermes-Desktop.

    177 GitHub starsUsed in 2 repos~3.2k tokens
    Auto-check passed
  • Systematic Debugging

    RedWoodOG/Hermes-Desktop

    A skill your agent uses when encountering any bug, test failure, or unexpected behavior.

    177 GitHub starsUsed in 6 repos~2.6k tokens
    Auto-check passed
  • Test Driven Development

    RedWoodOG/Hermes-Desktop

    A skill your agent uses when implementing any feature or bugfix, before writing implementation code.

    177 GitHub starsUsed in 6 repos~2.4k tokens
    Auto-check passed
  • Claude Code

    RedWoodOG/Hermes-Desktop

    Delegate coding tasks to Claude Code (Anthropic's CLI agent).

    177 GitHub starsUsed in 4 repos~784 tokens
    Auto-check passed

Works with

Questions about Heartmula

What does Heartmula do?

Set up and run HeartMuLa, the open-source music generation model family (Suno-like). Heartmula is an agent skill from RedWoodOG/Hermes-Desktop. Set up and run HeartMuLa, the open-source music generation model family (Suno-like).

When should I use Heartmula?

Heartmula fits situations like: tasks that involve Music and audio generation.

How do I install Heartmula in Claude Code?

Run `npx skills add RedWoodOG/Hermes-Desktop --skill heartmula -a claude-code`. Or copy the skill folder (skills/media/heartmula in RedWoodOG/Hermes-Desktop) into .claude/skills/heartmula in your project. Claude Code loads it when a task matches its description.

How do I install Heartmula in Codex?

Run `npx skills add RedWoodOG/Hermes-Desktop --skill heartmula -a codex`. Or copy the skill folder (skills/media/heartmula in RedWoodOG/Hermes-Desktop) into .agents/skills/heartmula in your project. Codex loads it when a task matches its description.

Can I use Heartmula in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add RedWoodOG/Hermes-Desktop --skill heartmula -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/heartmula, .gemini/skills/heartmula, .github/skills/heartmula and .opencode/skills/heartmula in your project.

What does Heartmula need to run?

Going by SKILL.md and its folder, Heartmula needs the command-line tools its instructions call (uv, hf, git and python). Our summary lists: Python 3.

Does Heartmula access the network?

SKILL.md names 4 domains. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. As links in the text: heartmula.github.io, huggingface.co and arxiv.org. This is read from the text; nothing was executed.

Is Heartmula safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Heartmula use?

No licence was found for Heartmula or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Heartmula use?

About 1.6k tokens (SKILL.md is roughly 6.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Heartmula?

Skills that share tags, products or a category with Heartmula: Heartmula (Luciole-Studio/Misaka-Agent, 171 stars), AI Music And Sound (social-media-skills/skills, 134 stars), Prismer Songwriting And AI Music (Prismer-AI/PrismerCloud, 1.6k stars) and Audio Jingle (sanqiufong/slides-from-anything, 132 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Heartmula?

RedWoodOG (a GitHub user) maintains it in RedWoodOG/Hermes-Desktop, which has 177 GitHub stars. The repository holds 62 skills in this directory. The repository was last updated on May 30, 2026.

Source: RedWoodOG/Hermes-Desktop on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.