SnipKey: Instructions file for Codex

AGENTS.md

SnipKey AGENTS.md is an instructions file for Codex, OpenCode from jtvargas/SnipKey. It costs 7,751 tokens per session, scanned A, original, MIT.

Repository instructions for SnipKey, a native iOS app for saving and quickly accessing text, links, images, and PDFs through a custom keyboard. It explains the app targets, architecture, storage, sync, and development setup.

In plain words
What is it for?
It helps agents open and run the project in Xcode, understand its SwiftUI, SwiftData, MVVM, and CloudKit setup, and work with the app and keyboard targets.
Why use it?
It gives coding agents the project context they need before changing the main app or its keyboard extension. It also reduces mistakes involving shared app data, iCloud, and the required iOS versions.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

Made for: Codex, OpenCode.

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Per session 7,751 This file is loaded in full into every session.
When invoked 7,751 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.07751 $0.07751
Opus 5.5 $0.03100 $0.03100
Sonnet 5.5 $0.01550 $0.01550
Haiku 4.5 $0.00775 $0.00775

Measured 2mo ago against content hash dcae2fd6abf3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

SnipKey AGENTS.md scanned grade A with 1 finding 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.

Makes network callslowCapability

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

let snippets = try modelContext?.fetch(fetchDescriptor)
AGENTS.md · 685 lines

How it starts

The opening of the file, as written. The whole thing — 685 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — SnipKey iOS Application

Guidelines for AI coding agents working on this codebase. Read this before making any changes.


Project Overview

SnipKey is a native iOS app (SwiftUI + SwiftData) that lets users create, organize, and quickly access text snippets, URLs, images, and PDFs via a custom keyboard extension.

Version 5.5 (main app), 5.0 (keyboard extension)
Bundle ID jrtv-projects.SnipKey
Min Deployment iOS 17.0 (base), iOS 26.0 in latest build configs
Architecture MVVM with SwiftData
Sync iCloud via CloudKit
Monetization Free app with optional tips via RevenueCat
Privacy No analytics, no tracking, no third-party data sharing

Targets:

  • SnipKey — Main iOS application
  • SnipKeyboard — Custom keyboard extension (jrtv-projects.SnipKey.SnipKeyboard)

Shared infrastructure:

  • App Group: group.snipkey (shared data between app and keyboard extension)
  • iCloud Container: iCloud.SnipKeyCloud

Build & Run

Xcode (recommended)

Open SnipKey.xcodeproj, select the SnipKey scheme, pick a simulator or device, and press Cmd + R.

Command line

# Build the main app (debug)
xcodebuild -project SnipKey.xcodeproj -scheme SnipKey -configuration Debug build

# Build for a specific simulator
xcodebuild -project SnipKey.xcodeproj -scheme SnipKey \
  -destination 'platform=iOS Simulator,name=iPhone 16' build

# Clean build
xcodebuild -project SnipKey.xcodeproj -scheme SnipKey clean build

After building

The keyboard extension must be enabled manually:

  1. Go to Settings > General > Keyboard > Keyboards > Add New Keyboard
  2. Select SnipKey
  3. (Optional) Enable Allow Full Access for image/PDF clipboard operations

Testing

No tests currently exist. Test targets (SnipKeyTests, SnipKeyUITests) are defined in the Xcode scheme but contain no test files. Adding tests is a welcome contribution.

Read the full file on GitHub · 685 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 · 685 lines · 7,751 tokens per session scan A dcae2fd6abf3

Subscribe to this mod's changes

SnipKey AGENTS.md is an instructions file published in the GitHub repository jtvargas/SnipKey (23 stars, last pushed 21d ago), licensed MIT. It adds 7,751 tokens to every session, about $0.0310 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

SnipKey AGENTS.md compared with instructions from other repositories

SnipKey AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
SnipKey AGENTS.mdjtvargas/SnipKeyInstructions file2321d agoMITA7,751Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA2,022GitHub Copilot