agentnative: Instructions file for Codex

AGENTS.md

agentnative AGENTS.md is an instructions file for Codex, OpenCode from brettdavies/agentnative. It costs 2,469 tokens per session, scanned A, original, no licence file.

Agent instructions for the agentnative project, covering which content is authoritative and how writing should sound and be edited. The description does not explain the project's broader purpose.

In plain words
What is it for?
Use them when editing agentnative content, choosing between conflicting sources, or reviewing wording and style.
Why use it?
They help an agent decide which information to trust and how to make content changes that match the project's voice.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is brettdavies/agentnative's own configuration. It tells Codex and OpenCode how to work on agentnative itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agentnative configures →

Reuse

Borrowing it

Nothing to install: this file belongs to brettdavies/agentnative. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/brettdavies/agentnative/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/brettdavies/agentnative

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 agentnative AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/brettdavies/agentnative/agents-md/github.svg)](https://agentmods.dev/instructions/brettdavies/agentnative/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/brettdavies/agentnative/agents-md"><img src="https://agentmods.dev/badge/instructions/brettdavies/agentnative/agents-md/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 agentnative AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/brettdavies/agentnative/agents-md"><img src="https://agentmods.dev/badge/instructions/brettdavies/agentnative/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,469 This file is loaded in full into every session.
When invoked 2,469 The same file — it is already loaded in full.
Security scan A 0 findings. 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 $0.02469 $0.02469
Opus 5.5 $0.00988 $0.00988
Sonnet 5.5 $0.00494 $0.00494
Haiku 4.5 $0.00247 $0.00247

Measured 12d ago against content hash d6503ae2313b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agentnative 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 12d 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 · 141 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 12d ago Changed d6503ae2313b
  2. 1mo ago Changed · +8 tokens per session 79b608e43da5
  3. 2mo ago First seen · 141 lines · 2,461 tokens per session scan A 812959ad61f8

Subscribe to this mod's changes

agentnative AGENTS.md is an instructions file published in the GitHub repository brettdavies/agentnative (3 stars, last pushed 5d ago), with no licence file. It adds 2,469 tokens to every session, about $0.0099 per session on Opus 5.5. 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 2026-08-31.

Related

agentnative AGENTS.md compared with instructions from other repositories

agentnative AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
agentnative AGENTS.mdbrettdavies/agentnativeInstructions file35d agononeA2,469Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,649GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA1,907GitHub Copilot