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/skills-il/developer-tools/hyperframes-best-practicesnpx skills add skills-il/developer-tools --skill hyperframes-best-practicesgit clone --depth 1 https://github.com/skills-il/developer-toolsWhat 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 | $0.00147 | $0.08842 |
| Opus 5 | $0.00073 | $0.04421 |
| Sonnet 5 | $0.00029 | $0.01768 |
| Haiku 4.5 | $0.00015 | $0.00884 |
Grade C, and why
hyperframes-best-practices scanned grade C with 1 finding 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 2d 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
- **Digits with adjacent symbols inside RTL runs.** A bare digit run is handled correctly by the Unicode bidi algorithm: `2025` next to a Hebrew word stays left-to-right inside an RTL paragraph on its own, it does NOT re How it starts
The opening of the file, as written. The whole thing — 447 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HyperFrames Best Practices
Adapted from the upstream HyperFrames skill at heygen-com/hyperframes (Apache-2.0). Hebrew and RTL adaptations by skills-il.
HTML is the source of truth for video. A composition is an HTML file with data-* attributes for timing, a GSAP timeline for animation, and CSS for appearance. The framework handles clip visibility, media playback, and timeline sync.
Problem
Building HTML-based videos with Hebrew text requires the compiler to fetch Hebrew Google Fonts on demand, explicit dir="rtl" on Hebrew containers, mirrored GSAP entrance directions, and Hebrew caption sync via Whisper, none of which HyperFrames documents out of the box. Hebrew voiceover is a separate gap: the local Kokoro fallback does not support Hebrew (its SUPPORTED_LANGS tuple holds 9 locales: en-us, en-gb, es, fr-fr, hi, it, pt-br, ja, zh), so Hebrew narration must come from a cloud TTS provider, either through the media-use audio path, whose voice resolution order is HeyGen Starfish then ElevenLabs then Kokoro, or by generating the file with any external service and importing it as an <audio> element. The hyperframes tts command itself is local-only and has no provider argument.
Hebrew and RTL
What ships with it
46 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.
- CHANGELOG.md 3.6 KB
- data-in-motion.md 1.2 KB
- evidence.json 21 KB
- house-style.md 4.5 KB
- LICENSE 11 KB
- metadata.json 2.7 KB
- optimization-log.json 8.4 KB
- palettes/bold-energetic.md 417 B
- palettes/clean-corporate.md 410 B
- palettes/dark-premium.md 389 B
- palettes/jewel-rich.md 394 B
- palettes/monochrome.md 454 B
- palettes/nature-earth.md 399 B
- palettes/neon-electric.md 380 B
- palettes/pastel-soft.md 392 B
- palettes/warm-editorial.md 411 B
- patterns.md 2.7 KB
- references/audio-reactive.md 3.0 KB
- references/captions.md 6.5 KB
- references/css-patterns.md 8.1 KB
- references/domain-checklist.md 18 KB
- references/dynamic-techniques.md 6.7 KB
- references/hebrew-rtl.md 8.9 KB
- references/motion-principles.md 3.8 KB
- references/transcript-guide.md 7.8 KB
- references/transitions.md 11 KB
- references/transitions/catalog.md 6.1 KB
- references/transitions/css-3d.md 421 B
- references/transitions/css-blur.md 1.7 KB
- references/transitions/css-cover.md 1.4 KB
- references/transitions/css-destruction.md 4.3 KB
- references/transitions/css-dissolve.md 2.4 KB
- references/transitions/css-distortion.md 1.8 KB
- references/transitions/css-grid.md 367 B
- references/transitions/css-light.md 2.3 KB
- references/transitions/css-mechanical.md 1.6 KB
- references/transitions/css-other.md 838 B
- references/transitions/css-push.md 1.2 KB
- references/transitions/css-radial.md 1.0 KB
- references/transitions/css-scale.md 715 B
- references/tts.md 2.8 KB
- references/typography.md 11 KB
- scripts/animation-map.mjs 19 KB runs code
- scripts/contrast-report.mjs 12 KB runs code
- SKILL_HE.md 25 KB
- visual-styles.md 9.6 KB
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.
- 2d ago First seen · 447 lines · 147 tokens per session scan C 9f3a7fedb40d
hyperframes-best-practices is a skill published in the GitHub repository skills-il/developer-tools (10 stars, last pushed 5d ago), licensed MIT. It adds 147 tokens to every session and 8,842 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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