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 rules/taotao135791-bit/gsap-transform/motion-primitivesgit clone --depth 1 https://github.com/taotao135791-bit/gsap-transformWrote 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/rules/taotao135791-bit/gsap-transform/motion-primitives)<a href="https://agentmods.dev/rules/taotao135791-bit/gsap-transform/motion-primitives"><img src="https://agentmods.dev/badge/rules/taotao135791-bit/gsap-transform/motion-primitives.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 | $0.00072 | $0.00372 |
| Opus 5 | $0.00036 | $0.00186 |
| Sonnet 5 | $0.00014 | $0.00074 |
| Haiku 4.5 | $0.00007 | $0.00037 |
Grade A, and why
motion-primitives 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.
What it actually says
motion-primitives
GSAP is the engine. Primitives are the verbs an agent uses to drive it. Without primitives, the agent has to write raw tl.fromTo(...) calls — error-prone and inconsistent. With them, it writes { primitive: "fadeUp", args: { y: 24 } }.
Catalog (16): fadeUp, fadeIn, scaleIn, slideInLeft, slideInRight, splitReveal, typewriter, scrambleText, morphTo, drawOn, parallaxY, staggerIn, loopPulse, shake, cameraPush, hold.
If the agent is about to call tl.from / tl.to / tl.fromTo directly, stop — use a primitive. If none fits, add one to skills/motion-primitives/{name}.js and export it from index.js.
Adding a primitive also requires:
- Adding the name to
PRIMITIVE_NAMESinskills/motion-state/runtime.mjs. - A test in
tests/motion-primitives/{name}.test.mjs. - Update of
PRIMITIVE_NAMESindocs/SPEC.md§3.
For the full contract, plugin requirements, and limitations: see skills/motion-primitives/SKILL.md.
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 · 21 lines · 72 tokens per session scan A 1f0ea3139427
motion-primitives is a cursor rule published in the GitHub repository taotao135791-bit/gsap-transform (2 stars, last pushed 2mo ago), licensed MIT. It adds 72 tokens to every session and 372 once invoked, about $0.0004 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 2026-08-31.
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