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costrict: Instructions file for Codex

AGENTS.md

costrict AGENTS.md is an instructions file for Codex, OpenCode from zgsm-ai/costrict. It costs 127 tokens per session, scanned A, a copy of Roo-Code AGENTS.md, Apache-2.0.

Repository-specific instructions for coding agents working on a code project. They explain how a settings screen should keep user edits separate until the user saves them.

In plain words
What is it for?
Use it when changing the settings view or other code in this repository. It helps the agent follow the project’s expected behavior and structure.
Why use it?
They help prevent race conditions, where edits can conflict with live application data. They also give the agent rules that apply only to this repository.

Instructions file for CodexOpenCode

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

This is zgsm-ai/costrict's own configuration. It tells Codex and OpenCode how to work on costrict 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 costrict configures →

not rated 4.5krepo +3 changed 1mo ago A scan 127 tokens copy · 100% Apache-2.0
View source ↗ zgsm-ai/costrict costrict.ai
Reuse

Borrowing it

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

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 costrict AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/zgsm-ai/costrict/agents-md"><img src="https://agentmods.dev/badge/instructions/zgsm-ai/costrict/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 127 This file is loaded in full into every session.
When invoked 127 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 100% copy Near-identical to another mod 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 $0.00127 $0.00127
Opus 5.5 $0.00051 $0.00051
Sonnet 5.5 $0.00025 $0.00025
Haiku 4.5 $0.00013 $0.00013

Measured 1mo ago against content hash c514de8a36af, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

costrict 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 1mo 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.

Origin

This is a copy

100% identical to Roo-Code AGENTS.md — 1 line differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

AGENTS.md · 7 lines

What it actually says

AGENTS.md

This file provides guidance to agents when working with code in this repository.

  • Settings View Pattern: When working on SettingsView, inputs must bind to the local cachedState, NOT the live useExtensionState(). The cachedState acts as a buffer for user edits, isolating them from the ContextProxy source-of-truth until the user explicitly clicks "Save". Wiring inputs directly to the live state causes race conditions.
  • Commit messages must be written in English and follow Conventional Commits (type(scope): summary). Never use Chinese in commit messages, even for local-only commits.
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. 1mo ago Changed · +1 lines · +32 tokens per session c514de8a36af
  2. 2mo ago First seen · 6 lines · 95 tokens per session scan A 0050c55acd56

Subscribe to this mod's changes

costrict AGENTS.md is an instructions file published in the GitHub repository zgsm-ai/costrict (4,462 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 127 tokens to every session, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to Roo-Code AGENTS.md, differing in 1 line, and is treated as a copy.

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Related

costrict AGENTS.md compared with instructions from other repositories

costrict AGENTS.md next to 6 instructions from other repositories
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costrict AGENTS.mdzgsm-ai/costrictInstructions file4.5k1mo agoApache-2.0A127Codex, 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