What is core AGENTS.md?

A project instruction file for ReactUnity that explains how to prepare release notes with Tegami, a package versioning and publishing tool.

Use it when documenting fixes, preparing package version changes, or creating pending changelog files for a release.

It prevents release information from being written in the wrong files or without the required package and heading details.

core AGENTS.md — Instructions file by ReactUnity

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/reactunity/core/agents-md

Clone the repo

git clone --depth 1 https://github.com/ReactUnity/core

Made for: Codex, OpenCode.

Per session 245 This file is loaded in full into every session.

When invoked 245 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.

Model	Per session	Once invoked
Fable 5	$0.00245	$0.00245
Opus 5	$0.00122	$0.00122
Sonnet 5	$0.00049	$0.00049
Haiku 4.5	$0.00024	$0.00024

Measured yesterday against content hash bccc87e27271, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

core 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 yesterday.

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

Copies of this mod

1 near-identical copy found in the catalogue:

stoop AGENTS.md — 95% identical, 4 lines differ

AGENTS.md · 40 lines

What it actually says

@CLAUDE.md

Release workflow

This repository uses Tegami for versioning and publishing.

Write changelog files

Create pending changelog files under .tegami/ as YYYY-MM-DD-{hash}.md.

See the changelog format docs for details.

Example

---
packages:
  "npm:@acme/ui": patch
---

### Fix button hover state

The hover color now matches the design system.

Package references

Use package names, ids, or groups in frontmatter. For example:

"@acme/ui" — package name
"npm:@acme/ui" — package id
"group:acme" — every package in a group

Rules:

Include YAML frontmatter with packages
Include at least one #, ##, or ### heading in the body
Write user-facing release notes under each heading
Do not edit the publish lock file (.tegami\publish-lock.yaml) or package CHANGELOG.md files directly

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.

yesterday First seen · 40 lines · 245 tokens per session scan A bccc87e27271

Subscribe to this mod's changes

core AGENTS.md is an instructions file published in the GitHub repository ReactUnity/core (893 stars, last pushed 4d ago), licensed MIT. It adds 245 tokens to every session, about $0.0012 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.

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AGENTS.md instructions for hatayama/unity-cli-loop, covering architecture overview, repository map, cli / unity package compatibility, project runner pin and generated skill files.

hatayama/unity-cli-loop · 3,014 tokens

unity-ui-toolkit-design-system AGENTS.md

Instructions for sinanata/unity-ui-toolkit-design-system, covering agents.md, what this project is, golden rules (do not violate), use the design system in your project and repository layout.

sinanata/unity-ui-toolkit-design-system · 3,290 tokens

unity-ui-toolkit-design-system copilot-instructions.md

Instructions for sinanata/unity-ui-toolkit-design-system: This repository follows the cross-tool AGENTS.md standard. Read /AGENTS.md for the full guide: the ds- class naming, the token rules, the load-bearing USS import order, build and preview commands, and the pull-request checklist.

sinanata/unity-ui-toolkit-design-system · 258 tokens

core AGENTS.md