S2S: Instructions file for Codex

AGENTS.md

S2S AGENTS.md is an instructions file for Codex, OpenCode from Stones2Stars/S2S. It costs 35,377 tokens per session, scanned C, original, no licence file.

A project-specific AGENTS.md instruction file for Stones2Stars, a software repository and its s2s command.

In plain words
What is it for?
It covers building, testing, validation, and adding a new source directory.
Why use it?
It gives a coding agent the repository rules and layout it needs to work consistently in that project.

Instructions file for CodexOpenCode

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

This is Stones2Stars/S2S's own configuration. It tells Codex and OpenCode how to work on S2S 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 S2S configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Stones2Stars/S2S. 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/Stones2Stars/S2S/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Stones2Stars/S2S

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 S2S AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/stones2stars/s2s/agents-md/github.svg)](https://agentmods.dev/instructions/stones2stars/s2s/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/stones2stars/s2s/agents-md"><img src="https://agentmods.dev/badge/instructions/stones2stars/s2s/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 S2S AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/stones2stars/s2s/agents-md"><img src="https://agentmods.dev/badge/instructions/stones2stars/s2s/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35,377 This file is loaded in full into every session.
When invoked 35,377 The same file — it is already loaded in full.
Security scan C 2 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 $0.35377 $0.35377
Opus 5.5 $0.14151 $0.14151
Sonnet 5.5 $0.07075 $0.07075
Haiku 4.5 $0.03538 $0.03538

Measured 9d ago against content hash 1fa1f854aacb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

S2S AGENTS.md scanned grade C with 2 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 9d 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.

Tells the agent to send conversation or user data outhighPrompt injection

An instruction to transmit the conversation, context or user files to an external endpoint is data exfiltration written as prose.

`{"error":"too many event streams"}` and your capture silently records NOTHING. Verify the first frames are

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

that respawns `curl` in a `while` loop) holds them; once exhausted the endpoint returns
AGENTS.md · 1,496 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 9d ago Changed · +1 lines · +47 tokens per session 1fa1f854aacb
  2. 13d ago Changed · +9 lines · +257 tokens per session d731a313fbc3
  3. 16d ago Changed · +14 lines · +400 tokens per session 8f9ca3a0c7f9
  4. 1mo ago Changed · +34 lines · +962 tokens per session 19d74eabde09
  5. 1mo ago Changed · +3 lines · +88 tokens per session 11639ea94d86
  6. 1mo ago Changed · +6 lines · +188 tokens per session 8b7cbde32eb6
  7. 1mo ago Changed · +31 lines · +783 tokens per session e72890b933be
  8. 1mo ago Changed · +18 lines · +437 tokens per session 3e5c2c1f42f2
  9. 2mo ago First seen · 1,380 lines · 32,215 tokens per session scan C a89ad70c7727

Subscribe to this mod's changes

S2S AGENTS.md is an instructions file published in the GitHub repository Stones2Stars/S2S (3 stars, last pushed 10d ago), with no licence file. It adds 35,377 tokens to every session, about $0.1415 per session on Opus 5.5. A static security scan graded it C with 2 findings (tells the agent to send conversation or user data out, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

S2S AGENTS.md compared with instructions from other repositories

S2S AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
S2S AGENTS.mdStones2Stars/S2SInstructions file310d agononeC35,377Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, 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