whisper-beat-finder

whisper-beat-finder is a skill for Claude Code, Codex from RinDig/Interpretable-Context-Methodology. It costs 33 tokens per session (772 once invoked), scanned A, original, MIT.

A tool that uses Whisper, a speech-to-text system, to match spoken script phrases in an MP3 with their exact word times.

In plain words
What is it for?
Use it after producing narration to create a word-timestamped transcript and a list of beat boundaries for video scenes.
Why use it?
It turns a finished narration into usable timing information without manually listening for every scene change.

Skill for Claude CodeCodex

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

Good fit Use it after producing narration to create a word-timestamped transcript and a list of beat boundaries for video scenes.

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Install with agentmods
npx agentmods add skills/rindig/interpretable-context-methodology/whisper-beat-finder
About the project

Interpretable Context Methodology is a way to build agent workflows from numbered folders and Markdown files, with each file providing the prompts and context for one stage. It is for sequential tasks where a single AI agent follows a filesystem-defined process and people may review each stage. The catalogue skills support workflows built with this approach.

RinDig/Interpretable-Context-Methodology · 1,156 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add RinDig/Interpretable-Context-Methodology --skill whisper-beat-finder
Clone the repo
git clone --depth 1 https://github.com/RinDig/Interpretable-Context-Methodology

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 whisper-beat-finder

README.md
[![agentmods](https://agentmods.dev/badge/skills/rindig/interpretable-context-methodology/whisper-beat-finder/github.svg)](https://agentmods.dev/skills/rindig/interpretable-context-methodology/whisper-beat-finder)
Your own site
<a href="https://agentmods.dev/skills/rindig/interpretable-context-methodology/whisper-beat-finder"><img src="https://agentmods.dev/badge/skills/rindig/interpretable-context-methodology/whisper-beat-finder/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 whisper-beat-finder

Your own site · 80×15
<a href="https://agentmods.dev/skills/rindig/interpretable-context-methodology/whisper-beat-finder"><img src="https://agentmods.dev/badge/skills/rindig/interpretable-context-methodology/whisper-beat-finder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 772 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00033 $0.00772
Opus 5 $0.00016 $0.00386
Sonnet 5 $0.00007 $0.00154
Haiku 4.5 $0.00003 $0.00077

Measured 10d ago against content hash ac3acf903dec, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

whisper-beat-finder 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 10d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/find-beats.py, scripts/transcribe.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

workspaces/voice-driven-animation/skills/whisper-beat-finder/SKILL.md · 63 lines

How it starts

The opening of the file, as written. The whole thing — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to Use

Use this skill in Stage 03, immediately after elevenlabs-narration produces an mp3. It outputs two things:

  1. transcript.json -- Whisper's full output with word-level timestamps
  2. beat-timings.md -- absolute timestamps for each beat boundary and key sub-callout

Stage 04 reads beat-timings.md to populate timing.ts and re-time per-scene T constants.

What You Need

  • Python with openai-whisper installed
  • The mp3 produced by Stage 03 (Whisper takes the file path)
  • A list of phrases to find (these come from the script, one per beat boundary)

No GPU is required. The default configuration runs medium.en on CPU, which finishes ~1 minute per minute of audio on a modern laptop and is reliable across drivers.

CPU vs GPU

Configured model: {{WHISPER_MODEL}}

We default to medium.en on CPU because large-v3 on GPU has been observed to segfault on some CUDA driver combinations (RTX 5080 + driver 591.86 was one). medium.en is accurate enough for beat extraction and never crashes. See rules/cpu-fallback.md.

If you have a stable GPU setup and need faster turnaround, switch to large-v3 with device="cuda". If anything segfaults, fall back to medium.en on CPU.

How It Works

  1. Load the model: whisper.load_model("medium.en", device="cpu")
  2. Transcribe with word_timestamps=True, language="en", fp16=False
  3. Save the full result to transcript.json
  4. For each beat in the script, search the word stream for that beat's opening phrase (case-insensitive substring match across N consecutive words). Record the absolute start time.
  5. Optionally search for sub-callout phrases (mid-beat moments worth animating against) and record their times too.
  6. Write beat-timings.md with the structured table.

See rules/phrase-matching.md for the matching contract.

Scripts

Read the full file on GitHub · 63 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 10d ago First seen · 63 lines · 33 tokens per session scan A ac3acf903dec

Subscribe to this mod's changes

whisper-beat-finder is a skill published in the GitHub repository RinDig/Interpretable-Context-Methodology (1,156 stars, last pushed 1mo ago), licensed MIT. It adds 33 tokens to every session and 772 once invoked, about $0.0002 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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