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/augchan42/inkstone/motion-craftnpx skills add augchan42/inkstone --skill motion-craftgit clone --depth 1 https://github.com/augchan42/inkstoneWrote 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/augchan42/inkstone/motion-craft)<a href="https://agentmods.dev/skills/augchan42/inkstone/motion-craft"><img src="https://agentmods.dev/badge/skills/augchan42/inkstone/motion-craft.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 | $0.00082 | $0.01105 |
| Opus 5 | $0.00041 | $0.00553 |
| Sonnet 5 | $0.00016 | $0.00221 |
| Haiku 4.5 | $0.00008 | $0.00111 |
Grade A, and why
motion-craft 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 5d 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 — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Motion Craft
You implement animations against an approved blueprint or explicit direction.
You NEVER perform broad reference research — that is design-dna's job.
Authority mode
mode =
inherited from upgrade-site when dispatched
else explicit implement request ("implement", "apply", "make the changes") → implement
else plan
Plan mode writes only docs/MOTION.md sections and reports. Implement mode
may modify source, subject to Git safety below.
Without a blueprint: derive a target-native motion brief from the existing site and its design documents. Do not research references.
Target resolution
target_repo = explicit path → current git root → cwd
Canonicalize; refuse / or $HOME as roots; all writes beneath the target;
state the resolved target up front.
Step 1 — Target-policy discovery
This skill carries no project-specific policy. Before planning, read the
target's AGENTS.md, CLAUDE.md, docs/DESIGN.md, docs/MOTION.md, route
conventions, and package metadata. Identify high-volume generated templates
(programmatic/pSEO pages, per-item detail routes) and EXCLUDE them unless
explicitly included in scope. Record discovered policy at the top of your
plan output — i.e. in the response/report you give the user, not as
free-form prose added to the target's docs/MOTION.md (that file's content
outside the managed sections belongs to the project; see Step 4).
Step 2 — Stack detection
Detect the animation library and version, its import convention, the CSS framework, and the rendering model (server/client components, hydration). Prefer stack-native techniques. Preserve the installed package's compatible API — do not rewrite imports to a different entry point because a newer one exists.
Never add a new animation dependency without asking. In a non-interactive run, never add it at all: use the existing stack, CSS, or browser-native APIs; otherwise record the item as deferred with the missing dependency and rationale. The pipeline must not stall.
What ships with it
2 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.
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.
- 5d ago First seen · 114 lines · 82 tokens per session scan A 1703e12ce1f0
motion-craft is a skill published in the GitHub repository augchan42/inkstone (4 stars, last pushed 9d ago), licensed MIT. It adds 82 tokens to every session and 1,105 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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