overlay-web: Instructions file for Codex

AGENTS.md

overlay-web AGENTS.md is an instructions file for Codex, OpenCode from LayerNorm/overlay-web. It costs 7,226 tokens per session, scanned A, original, AGPL-3.0.

A set of instructions in an AGENTS.md file for working on the LayerNorm/overlay-web project.

In plain words
What is it for?
Use it when an agent needs the project's working rules, including how to handle continual learning and self-updating documentation.
Why use it?
It tells coding agents about project-specific memory, user preferences, workspace facts, and documentation that must be kept up to date.

Instructions file for CodexOpenCode

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

This is LayerNorm/overlay-web's own configuration. It tells Codex and OpenCode how to work on overlay-web 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 overlay-web configures →

Reuse

Borrowing it

Nothing to install: this file belongs to LayerNorm/overlay-web. 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/LayerNorm/overlay-web/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/LayerNorm/overlay-web

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 overlay-web AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/layernorm/overlay-web/agents-md"><img src="https://agentmods.dev/badge/instructions/layernorm/overlay-web/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 7,226 This file is loaded in full into every session.
When invoked 7,226 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 $0.07226 $0.07226
Opus 5.5 $0.02890 $0.02890
Sonnet 5.5 $0.01445 $0.01445
Haiku 4.5 $0.00723 $0.00723

Measured today against content hash c638bf87fe61, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

overlay-web 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 today.

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 · 148 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, 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. today Changed · +1 lines · +33 tokens per session c638bf87fe61
  2. yesterday Changed · +1 lines · +181 tokens per session 7e4fcbb5f74f
  3. 2d ago Changed · +4 lines · +155 tokens per session 353b68089b3b
  4. 3d ago Changed · +1 lines · +103 tokens per session 1924b6f93deb
  5. 6d ago Changed · +2 lines · +28 tokens per session fdcacfb9f1a1
  6. 9d ago Changed · +1 lines · +37 tokens per session c4195f248297
  7. 13d ago Changed · +1 lines · +28 tokens per session 8ee602c8b063
  8. 15d ago Changed · +2 lines · +162 tokens per session 297aa2b58f44
  9. 16d ago Changed · +1 lines · +105 tokens per session 0d3c353d3281
  10. 17d ago First seen · 134 lines · 6,394 tokens per session scan A f8c04a1d9aa7

Subscribe to this mod's changes

overlay-web AGENTS.md is an instructions file published in the GitHub repository LayerNorm/overlay-web (193 stars, last pushed today), licensed AGPL-3.0. It adds 7,226 tokens to every session, about $0.0289 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 2026-08-30.

Related

overlay-web AGENTS.md compared with instructions from other repositories

overlay-web AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
overlay-web AGENTS.mdLayerNorm/overlay-webInstructions file193todayAGPL-3.0A7,226Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode