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skills AGENTS.md

skills AGENTS.md is an instructions file for Codex, OpenCode from playcanvas/skills. It costs 326 tokens per session, scanned A, original, MIT.

A repository instruction file for a collection of PlayCanvas skills. PlayCanvas is a web platform for building interactive 3D experiences.

In plain words
What is it for?
Use it when adding or changing PlayCanvas skills, checking the repository layout, or running its release and verification checks.
Why use it?
It explains where skills belong, what their files should contain, and how to verify changes so the repository stays compatible with its supported coding agents.

Instructions file for CodexOpenCode

not rated 13 +1 8d ago A scan 326 tokens original MIT
View the source file playcanvas/skills
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.

agentmods
npx agentmods add instructions/playcanvas/skills/agents-md
Clone the repo
git clone --depth 1 https://github.com/playcanvas/skills

Made for: Codex, OpenCode.

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 skills AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/playcanvas/skills/agents-md.svg)](https://agentmods.dev/instructions/playcanvas/skills/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/playcanvas/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/playcanvas/skills/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 326 This file is loaded in full into every session.
When invoked 326 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00326 $0.00326
Opus 5 $0.00163 $0.00163
Sonnet 5 $0.00065 $0.00065
Haiku 4.5 $0.00033 $0.00033

Measured 3d ago against content hash 37a728aff54a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skills AGENTS.md 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 3d 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.

AGENTS.md · 32 lines

What it actually says

PlayCanvas Skills

This repository ships one portable set of PlayCanvas Engine skills through Claude Code, Codex, Cursor, and Agent Skills-compatible installers.

Repository layout

  • skills/<name>/SKILL.md is the canonical skill source. Every direct child of skills/ ships.
  • Surface-specific guidance belongs in a skill's references/ directory.
  • .claude-plugin/, .codex-plugin/, and .cursor-plugin/ contain host distribution metadata.
  • .agents/plugins/marketplace.json is the Codex marketplace manifest.
  • scripts/ and test/ contain release, contract, and runtime verification.

Keep skills directly under skills/. Nested category buckets are not part of this repository's contract because the native Codex plugin validates direct skill children.

Skill changes

  • Keep canonical guidance agent-agnostic. Do not add host-specific instructions or metadata inside a skill.
  • Keep SKILL.md frontmatter to name and description; the name must match its directory.
  • Prefer installed package declarations, exports, shipped scripts, and official examples over copied snippets or assumed APIs.
  • Add deterministic scripts only when agents would otherwise need to reimplement the same work.
  • When adding or removing a skill, update the top-level README and the Claude plugin's explicit skills inventory.

Verification

Run the repository checks documented in CONTRIBUTING.md. At minimum, validate every skill, run the Node test suite, and validate both the Claude and Codex plugin contracts before release.

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. 3d ago First seen · 32 lines · 326 tokens per session scan A 37a728aff54a

Subscribe to this mod's changes

skills AGENTS.md is an instructions file published in the GitHub repository playcanvas/skills (13 stars, last pushed 8d ago), licensed MIT. It adds 326 tokens to every session, about $0.0016 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 2026-08-30.

Game developmentagent-skillsai-agentsclaudeclaude-codecoding-agentsplaycanvas
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