promo-music-maker

promo-music-maker is a skill for Claude Code, Codex from kangarooking/promo-creator-skills. It costs 106 tokens per session (3,889 once invoked), scanned A, original, MIT.

A guide for creating background music plans for product-promo videos. It reads materials such as a storyboard or EDL (an edit decision list containing shot timings) and produces music direction, timing points, and generation prompts.

In plain words
What is it for?
Use it to plan instrumental BGM, choose tempo and mood, map musical changes to video events, write English prompts for Mureka or Skywork Music Maker, and suggest editing and volume choices.
Why use it?
It turns a video's visual rhythm and transitions into a structured music brief. This helps avoid choosing background music that clashes with the edit or misses important cuts.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python scripts/mureka.py instrumental \.

Good fit Use it to plan instrumental BGM, choose tempo and mood, map musical changes to video events, write English prompts for Mureka or Skywork Music Maker, and suggest editing and volume choices.

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Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/kangarooking/promo-creator-skills
agentmods
npx agentmods add skills/kangarooking/promo-creator-skills/promo-music-maker

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for promo-music-maker

README.md
[![agentmods](https://agentmods.dev/badge/skills/kangarooking/promo-creator-skills/promo-music-maker/github.svg)](https://agentmods.dev/skills/kangarooking/promo-creator-skills/promo-music-maker)
Your own site
<a href="https://agentmods.dev/skills/kangarooking/promo-creator-skills/promo-music-maker"><img src="https://agentmods.dev/badge/skills/kangarooking/promo-creator-skills/promo-music-maker/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for promo-music-maker

Your own site · 80×15
<a href="https://agentmods.dev/skills/kangarooking/promo-creator-skills/promo-music-maker"><img src="https://agentmods.dev/badge/skills/kangarooking/promo-creator-skills/promo-music-maker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,889 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00106 $0.03889
Opus 5 $0.00053 $0.01945
Sonnet 5 $0.00021 $0.00778
Haiku 4.5 $0.00011 $0.00389

Measured 12d ago against content hash 3576f2c2dea3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

promo-music-maker scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

promo-music-maker/SKILL.md · 303 lines

How it starts

The opening of the file, as written. The whole thing — 303 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Promo Music Maker — 宣传片 BGM Prompt & 卡点设计

定位

你是宣传片音乐总监。根据已确认的宣传片结构,为成片设计一条可生成、可剪辑、能卡转场的 BGM 方案。

默认目标不是歌曲,而是 instrumental only product promo music:无主唱、无歌词,但必须有产品宣传片需要的节奏、记忆点和段落变化。不要把“高级”误写成“低能量 ambient 垫底音乐”。

输入文件优先级

按顺序读取可用文件:

  1. 04-edl.md:必须优先读,用于转场点、镜头时长和卡点。
  2. 02-storyboard.md:读取镜头情绪、画面主体、文字节奏。
  3. DESIGN.md:读取视觉风格、颜色、禁用项。
  4. 05-delivery.md / final/promo.mp4:读取最终时长、是否无口播/无配乐。
  5. 01-brief.md:读取产品定位和目标受众。

如果没有 EDL,先从 storyboard 中推导 timing,并在输出里标注“timing inferred”。

输出文件

输出到当前 promo run 目录:

06-music-plan.md
assets/bgm/                 ← 后续生成或放置 BGM

06-music-plan.md 必须包含:

## BGM 方案

### 视频摘要
- 产品:
- 时长:
- 风格:
- 音乐目标:

### 音乐方向
- 类型:
- BPM:
- 拍号:
- 调性:
- 情绪曲线:
- 主要乐器:
- 声音质感:
- 避免:

### 卡点表
| 时间点 | 画面事件 | 音乐动作 | 强度 |

### 生成 Prompt
#### Primary Prompt
[English prompt]

#### Alternative Prompt A
[English prompt]

#### Alternative Prompt B
[English prompt]

#### Negative Prompt
[English avoid list]

### 生成建议
- 推荐生成数量:
- 推荐输出时长:
- 后期剪辑方式:
- 音量建议:

参考 Skywork Music Maker 的 Prompt 规则

采用 Skywork skywork-music-makerreferences/mureka_prompt_guide.mdreferences/product_promo_bgm_prompting.md 的核心原则:

  • Prompt 用英文。
  • 描述音乐本身,不写命令句,如避免 create/generate/make
  • 必须包含:specific genre、BPM/tempo、3-5 instruments、mood、dynamic arc、instrumental only。
  • 要写 mood progression,不写静态情绪。
  • 要写 avoid list,避免生成不适合宣传片的元素。
  • 默认生成 2-3 个候选,不只生成 1 个。
  • 迭代时一次只改一个变量,例如只改 BPM、只改鼓组密度、只改情绪词;不要整段重写,否则无法判断改动是否有效。

重要修正:Apple 风画面不等于 Ambient BGM

黑底、极简字体、真实软件界面可以是 Apple 风;音乐不应自动变成全程 ambient pads + soft pulse + glass ticks

产品宣传片/产品展示片通常需要:

  • 明确的 rhythm bed。
  • 可记住的无声 hook,例如 synth pluck motif / piano motif / bass riff。
  • bass movement,而不是只有低频垫底。
  • 段落对比:intro、product reveal、workflow lift、CTA resolve。
  • 商业广告级 polish,而不是素材库式“科技氛围”。

除非用户明确要求极安静、冥想、背景氛围,否则不要默认禁用 drums。应该禁用的是错误鼓组:trap hatsEDM festival droptrailer booms、过度压迫的大鼓。

备选方案必须真正不同

禁止用同一套词生成多个“看似不同”的候选,例如:

minimal / premium / tech / ambient / warm pads / soft pulse / glass ticks

Read the full file on GitHub · 303 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 303 lines · 106 tokens per session scan A 3576f2c2dea3

Subscribe to this mod's changes

promo-music-maker is a skill published in the GitHub repository kangarooking/promo-creator-skills (94 stars, last pushed 4mo ago), licensed MIT. It adds 106 tokens to every session and 3,889 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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