screenize: Instructions file for Codex

AGENTS.md

screenize AGENTS.md is an instructions file for Codex, OpenCode from syi0808/screenize. It costs 1,239 tokens per session, scanned A, original, Apache-2.0.

Project instructions for screenize, a macOS screen-recording and editing app built with SwiftUI. They describe the required agent workflow and the commands used to build, check, and test the app.

In plain words
What is it for?
Use them when changing screenize source code, running its Xcode build, checking lint, or running tests. They tell the agent to find prior context first and record the finished work afterward.
Why use it?
They make repository work more consistent and ensure related work is checked before changes begin. They also require logging completed work and provide the exact verification commands.

Instructions file for CodexOpenCode

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

This is syi0808/screenize's own configuration. It tells Codex and OpenCode how to work on screenize 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 screenize configures →

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /Users/sung-yein/Workspace/screenize.

Reuse

Borrowing it

Nothing to install: this file belongs to syi0808/screenize. 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/syi0808/screenize/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/syi0808/screenize

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 screenize AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/syi0808/screenize/agents-md/github.svg)](https://agentmods.dev/instructions/syi0808/screenize/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/syi0808/screenize/agents-md"><img src="https://agentmods.dev/badge/instructions/syi0808/screenize/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 screenize AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/syi0808/screenize/agents-md"><img src="https://agentmods.dev/badge/instructions/syi0808/screenize/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,239 This file is loaded in full into every session.
When invoked 1,239 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01239 $0.01239
Opus 5.5 $0.00496 $0.00496
Sonnet 5.5 $0.00248 $0.00248
Haiku 4.5 $0.00124 $0.00124

Measured 2mo ago against content hash 587e76e9792d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

screenize 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 · 146 lines

How it starts

The opening of the file, as written. The whole thing — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Guidance for autonomous coding agents working in this repository.

Repository Snapshot

  • Project: Screenize (macOS screen recording and editing app)
  • Language: Swift
  • UI framework: SwiftUI
  • Target platform: macOS 13+
  • Build system: Xcode project (Screenize.xcodeproj)
  • External dependency: Sparkle (via Swift Package Manager)

Mandatory Agent Workflow

Follow this sequence for each meaningful work unit:

  1. START: run the work-context-finder agent to check prior related work.
  2. WORK: implement the task.
  3. FINISH: execute /log-work using the work-logger skill.

Notes:

  • This workflow is defined in CLAUDE.md and should be treated as repository policy.
  • All generated logs/summaries/tags for vector DB workflows must be in English.

Build, Lint, and Test Commands

Run all commands from repository root (/Users/sung-yein/Workspace/screenize).

Build

xcodebuild -project Screenize.xcodeproj -scheme Screenize -configuration Debug build

Lint

./scripts/lint.sh

Auto-fix lint violations where possible:

./scripts/lint.sh --fix

Tests (Current Status + How To Run)

Current repository status:

  • There is currently no test target configured in Screenize.xcodeproj.
  • There are currently no *Tests* files/directories in the repo.
  • Primary verification today is successful build + lint.

When tests are added, use these command patterns:

Run all tests for a scheme:

xcodebuild -project Screenize.xcodeproj -scheme Screenize -destination 'platform=macOS' test

Run a single test class:

xcodebuild -project Screenize.xcodeproj -scheme Screenize -destination 'platform=macOS' -only-testing:ScreenizeTests/MyFeatureTests test

Run a single test method:

xcodebuild -project Screenize.xcodeproj -scheme Screenize -destination 'platform=macOS' -only-testing:ScreenizeTests/MyFeatureTests/testExample test

Tip: if scheme/target names differ, inspect with:

xcodebuild -list -project Screenize.xcodeproj

Read the full file on GitHub · 146 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.

  1. 2mo ago First seen · 146 lines · 1,239 tokens per session scan A 587e76e9792d

Subscribe to this mod's changes

screenize AGENTS.md is an instructions file published in the GitHub repository syi0808/screenize (619 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 1,239 tokens to every session, about $0.0050 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

screenize AGENTS.md compared with instructions from other repositories

screenize AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
screenize AGENTS.mdsyi0808/screenizeInstructions file6195mo agoApache-2.0A1,239Codex, 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