pointer-field-craft

pointer-field-craft is a skill for Claude Code, Codex from ashishpatill/tell-proof. It costs 52 tokens per session (393 once invoked), scanned A, original, MIT.

A guide for creating a decorative trail of particles that follows pointer movement. It covers spacing, lag, idle behavior, touch devices, reduced motion, hidden tabs, and cleanup.

In plain words
What is it for?
Use it to build an optional canvas-based cursor trail or pointer effect for a webpage.
Why use it?
It prevents trails from becoming uneven, crowded, wasteful, or distracting when pointer speed and device conditions change.

Skill for Claude CodeCodex

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

Good fit Use it to build an optional canvas-based cursor trail or pointer effect for a webpage.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ashishpatill/tell-proof/pointer-field-craft
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 ashishpatill/tell-proof --skill pointer-field-craft
Clone the repo
git clone --depth 1 https://github.com/ashishpatill/tell-proof

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 pointer-field-craft

README.md
[![agentmods](https://agentmods.dev/badge/skills/ashishpatill/tell-proof/pointer-field-craft.svg)](https://agentmods.dev/skills/ashishpatill/tell-proof/pointer-field-craft)
Your own site
<a href="https://agentmods.dev/skills/ashishpatill/tell-proof/pointer-field-craft"><img src="https://agentmods.dev/badge/skills/ashishpatill/tell-proof/pointer-field-craft.svg" alt="Measured on agentmods" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 393 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.
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 $0.00052 $0.00393
Opus 5 $0.00026 $0.00197
Sonnet 5 $0.00010 $0.00079
Haiku 4.5 $0.00005 $0.00039

Measured 4d ago against content hash 705dfd467b4b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

pointer-field-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 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.

agent-skills/web-design/premium-content-custom-web/pointer-field-craft/SKILL.md · 52 lines

What it actually says

pointer-field-craft

Build the emitter when trail density must follow hand speed.

Emit by distance, not time (the core mechanism)

E.acc += moved;
let guard = 0;
while (E.acc >= STEP && guard++ < 14) {
  E.acc -= STEP;
  spawn(/* … */);
}

Timer emission makes spacing ∝ speed — flicks scatter; resting hands pile motes. Cap the loop so teleports / tab restores cannot spawn thousands in one frame.

Place each mote where it is owed

Lay along the segment (t = guard * STEP / moved), not all at the current tip.

Ring-buffer: take the slot before advancing

const i = E.i; E.i = (i + 1) % N; // correct — advance after write

Advancing first makes every mote appear one step behind.

Lag the emitter behind the pointer

Damp toward the pointer so flicks keep slack instead of welding the trail to the cursor.

Also learn

  • Idle breath when distance emission would go silent
  • Coast instead of hard stop
  • Touch + prefers-reduced-motion → disable or static
  • Pause when document.hidden or section not intersecting
  • Prefer canvas overlay; moving emitter solely to raise z-index rarely pays off

Tell constraints

  • Default product UI: off (distracts from proof stages)
  • Allowed as opt-in on art-directed studio heroes with reduced-motion off and content contrast intact
  • Never attach listeners per mote; one pointer listener on the field root
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. 4d ago First seen · 52 lines · 52 tokens per session scan A 705dfd467b4b

Subscribe to this mod's changes

pointer-field-craft is a skill published in the GitHub repository ashishpatill/tell-proof (1 stars, last pushed 12d ago), licensed MIT. It adds 52 tokens to every session and 393 once invoked, about $0.0003 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 2026-09-03.

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