What is .gitignores AGENTS.md?

Repository instructions for maintaining a collection of .gitignore files, which tell Git which files not to track. They define two separate organization systems and rules for combining templates.

Use them when creating or editing language, framework, tool, IDE, operating-system, or platform templates. They also specify when to add security rules and when to combine files with duplicate removal.

They prevent incompatible templates from being mixed and ensure generated .gitignore files include required security exclusions and have consistent ordering.

How ronald2wing/.gitignores configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to ronald2wing/.gitignores. 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/ronald2wing/.gitignores/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/ronald2wing/.gitignores

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/ronald2wing/.gitignores/agents-md/github.svg)](https://agentmods.dev/instructions/ronald2wing/.gitignores/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/ronald2wing/.gitignores/agents-md"><img src="https://agentmods.dev/badge/instructions/ronald2wing/.gitignores/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/ronald2wing/.gitignores/agents-md"><img src="https://agentmods.dev/badge/instructions/ronald2wing/.gitignores/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 641 This file is loaded in full into every session.

When invoked 641 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 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 5.1	$0.00641	$0.00641
Opus 5.5	$0.00256	$0.00256
Sonnet 5.5	$0.00128	$0.00128
Haiku 4.5	$0.00064	$0.00064

Measured 2mo ago against content hash 15297d3cd0ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

.gitignores 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 2mo 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 · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Audience: AI agents operating on this repository.
Authoritative reference: TEMPLATE_STANDARDS.md

Architecture

Template factory — no build, lint, test, or package manager. Every template is a standalone .gitignore file.

Two Systems — pick one, never mix

	Framework	Modular
Start	`frameworks/<name>.gitignore`	`languages/<name>.gitignore`
Security	Built-in (first section)	Must add `common/security.gitignore`
Extras	IDEs, OS only	common/, tools/, ides/, os/

Hard Constraints

Framework + Language = NEVER — frameworks already contain language patterns.
Language without Security = NEVER — add common/security.gitignore.
Combine with sort -u = ALWAYS — cat a b c | sort -u > .gitignore.

Creating or Editing

Language?    → languages/<name>.gitignore     (no security section)
Framework?   → frameworks/<name>.gitignore    (security section FIRST)
Tool/CI?     → tools/<name>.gitignore
IDE?         → ides/<name>.gitignore
OS?          → os/<name>.gitignore
Platform?    → platforms/<name>.gitignore

Naming, section ordering, header/metadata format → TEMPLATE_STANDARDS.md.
Section ordering gotcha: some existing templates (e.g. languages/rust.gitignore) have non-standard sections — new templates must follow the canonical order.

Combining Templates

Pick core — Framework OR language, never both.
Add security — common/security.gitignore for language templates.
Layer extras — Tools, IDEs, OS as needed.
Deduplicate — pipe through sort -u.
Validate — git status --ignored in a test repo.

Verification

# Dedup check (must produce no output)
sort template.gitignore | uniq -d

# Smoke test (adapt touch files to template patterns)
mkdir /tmp/gitignore-test && cd /tmp/gitignore-test && git init
cp /path/to/template.gitignore .gitignore
touch .env .env.local credentials.json secret.key
git status --ignored   # All four should appear under "Ignored files"

Read the full file on GitHub · 78 lines

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.

2mo ago First seen · 78 lines · 641 tokens per session scan A 15297d3cd0ff

Subscribe to this mod's changes

.gitignores AGENTS.md is an instructions file published in the GitHub repository ronald2wing/.gitignores (6 stars, last pushed 6mo ago), licensed MIT. It adds 641 tokens to every session, about $0.0026 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.

Git and workflow github gitignore

.gitignores AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
.gitignores AGENTS.mdronald2wing/.gitignores	Instructions file	6	6mo ago	MIT	A	641	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

.gitignores: Instructions file for Codex