unity-architecture

Coding rules for Unity 6.2 and newer, a game-development engine. They act as a single source of guidance for Cursor and Google Antigravity and can be synchronized between those tools.

In plain words
What is it for?
Following architecture rules in Unity projects and keeping the related Cursor and Google Antigravity instruction files in sync.
Why use it?
They help keep code and project decisions consistent when developing Unity projects with AI coding assistants.

Cursor rule for Cursor

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 rules/common-ka/ai-agent-unity-rules/unity-architecture
Clone the repo
git clone --depth 1 https://github.com/Common-ka/ai-agent-unity-rules

Made for: Cursor.

Per session 7 This file is loaded in full into every session.
When invoked 7 The same file โ€” it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00007 $0.00007
Opus 5 $0.00003 $0.00003
Sonnet 5 $0.00001 $0.00001
Haiku 4.5 $0.00001 $0.00001

Measured 2d ago against content hash 4447cbe12c17, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

unity-architecture scanned grade A with 0 findings against 26 rules in 11 categories โ€” prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency โ€” measured 2d 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.

Origin

This is a copy

100% identical to code-quality โ€” 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.cursor/rules/unity-architecture.mdc ยท 4 lines

The source is not reproduced here

Licensed MIT

The repository is licensed MIT, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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. 2d ago First seen ยท 4 lines ยท 7 tokens per session scan A 4447cbe12c17

Subscribe to this mod's changes

unity-architecture is a cursor rule published in the GitHub repository Common-ka/ai-agent-unity-rules (39 stars, last pushed 8mo ago), licensed MIT. It adds 7 tokens to every session, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to code-quality, differing in 0 lines, and is treated as a copy.