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.
npx agentmods add skills/heygen-com/hyperframes-community-skills/vox-explainernpx skills add heygen-com/hyperframes-community-skills --skill vox-explainergit clone --depth 1 https://github.com/heygen-com/hyperframes-community-skillsWrote 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.
[](https://agentmods.dev/skills/heygen-com/hyperframes-community-skills/vox-explainer)<a href="https://agentmods.dev/skills/heygen-com/hyperframes-community-skills/vox-explainer"><img src="https://agentmods.dev/badge/skills/heygen-com/hyperframes-community-skills/vox-explainer.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00100 | $0.03312 |
| Opus 5 | $0.00050 | $0.01656 |
| Sonnet 5 | $0.00020 | $0.00662 |
| Haiku 4.5 | $0.00010 | $0.00331 |
Grade A, and why
vox-explainer 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 233 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Plain-Sight Explainer (Gateway Workflow)
Build against the HyperFrames composition contract (clips, data-* timing,
and the #root schema). Install the upstream HyperFrames skills with
npx skills add heygen-com/hyperframes, or scaffold with
npx hyperframes init, and read the generated project documentation first.
Make a 60–90s explainer about something the viewer sees daily but has never looked at. The film manufactures recognition first, then pays it off with a causal history. Grammar measured from Vox's Cooper Black film; motion from the same frame-by-frame calibration process.
This is a Vox-inspired design vocabulary, not an affiliation or endorsement. Do not use Vox logos or imply that Vox produced the result.
Trust boundary and requirements
- Require Node.js 22 or newer for the bundled seam scripts. When they start a
preview server,
npxmay download the exact HyperFrames version pinned inscripts/seam-gate.mjsfrom the npm registry. - Read only the files and URLs the user supplies. Source mode may fetch public citations and public-domain or openly licensed assets from declared sources. Never send private documents, credentials, or private URLs to another service.
- Ask before using any TTS or transcription API. State the provider, data sent, required credential, and possible cost before the call.
- Write project source, downloaded assets, audio, contact sheets, and renders only inside the user's chosen project directory. Do not publish or upload the result automatically.
- The seam verifier starts a local preview server and an isolated Chrome
profile. Its
--urland--comp-urlinputs accept localhost only. A preview may still load remote assets declared by the user's composition.
Reference map
Read only the references needed for the current stage:
- Topic selection: plain-sight-topics.md
- Script and captions: plain-sight-script.md
- Layout and assets: vox-collage-layout.md
- Text and highlights: vox-text-overlays.md
- Collage motion: vox-collage-motion.md
- Motion law and seam gate: motion-continuity.md
- Transition catalog and code: velocity-matched-transitions.md and velocity-matched-transitions-gsap.md
- Multi-stage element motion: animation-overlap.md
- Render-safe seam mechanics: render-safe-seams.md
- Seam ledger and script usage: seam-gate.md
What ships with it
13 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.
- references/animation-overlap.md 4.8 KB
- references/motion-continuity.md 9.3 KB
- references/plain-sight-script.md 3.7 KB
- references/plain-sight-topics.md 2.5 KB
- references/render-safe-seams.md 3.9 KB
- references/seam-gate.md 5.2 KB
- references/velocity-matched-transitions-gsap.md 9.6 KB
- references/velocity-matched-transitions.md 15 KB
- references/vox-collage-layout.md 6.2 KB
- references/vox-collage-motion.md 3.8 KB
- references/vox-text-overlays.md 2.6 KB
- scripts/seam-gate.mjs 22 KB runs code
- scripts/seam-stamp.mjs 7.9 KB runs code
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.
- 4d ago First seen · 233 lines · 100 tokens per session scan A ac4e0a864da4
vox-explainer is a skill published in the GitHub repository heygen-com/hyperframes-community-skills (57 stars, last pushed 3d ago), licensed Apache-2.0. It adds 100 tokens to every session and 3,312 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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