p5js

p5js is a skill for Claude Code, Codex from Heldinhow/hermes-agent-skills. It costs 152 tokens per session (6,398 once invoked), scanned A, original, no licence file.

A production workflow for making interactive and generative browser visuals with p5.js, a JavaScript library for drawing and animation.

In plain words
What is it for?
Use it for sketches, generative art, data visualisations, interactive experiences, 2D or 3D scenes, audio-reactive visuals, and motion graphics exported as HTML, PNG, GIF, MP4, or SVG.
Why use it?
It brings the drawing, interaction, export, and visual-effects work for creative browser projects into one workflow.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it for sketches, generative art, data visualisations, interactive experiences, 2D or 3D scenes, audio-reactive visuals, and motion graphics exported as HTML, PNG, GIF, MP4, or SVG.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/heldinhow/hermes-agent-skills/p5js
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 Heldinhow/hermes-agent-skills --skill p5js
Clone the repo
git clone --depth 1 https://github.com/Heldinhow/hermes-agent-skills

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 p5js

README.md
[![agentmods](https://agentmods.dev/badge/skills/heldinhow/hermes-agent-skills/p5js/github.svg)](https://agentmods.dev/skills/heldinhow/hermes-agent-skills/p5js)
Your own site
<a href="https://agentmods.dev/skills/heldinhow/hermes-agent-skills/p5js"><img src="https://agentmods.dev/badge/skills/heldinhow/hermes-agent-skills/p5js/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for p5js

Your own site · 80×15
<a href="https://agentmods.dev/skills/heldinhow/hermes-agent-skills/p5js"><img src="https://agentmods.dev/badge/skills/heldinhow/hermes-agent-skills/p5js.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 152 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,398 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00152 $0.06398
Opus 5 $0.00076 $0.03199
Sonnet 5 $0.00030 $0.01280
Haiku 4.5 $0.00015 $0.00640

Measured 9d ago against content hash a7a3bb3d19ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

p5js scanned grade A 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 9d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/export-frames.js, scripts/render.sh, scripts/serve.sh, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| **Noise vocabulary** | Perlin noise, simplex, fractal (octaved), domain warping, curl noise | `references/visual-effects.md` § Noise |
creative/p5js/SKILL.md · 514 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 9d ago First seen · 514 lines · 152 tokens per session scan A a7a3bb3d19ec

Subscribe to this mod's changes

p5js is a skill published in the GitHub repository Heldinhow/hermes-agent-skills (2 stars, last pushed 4mo ago), with no licence file. It adds 152 tokens to every session and 6,398 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

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