What is Codeck AGENTS.md?

Repository instructions for Codeck, a macOS application and Swift package with shared document logic and an MCP server. Swift Package Manager is Apple's tool for building Swift projects and managing their code targets.

Use them to build and test the Swift package, run the MCP server, format and lint code, and create or inspect the macOS app bundle.

They explain where source, tests, examples, resources, and generated build files belong, reducing confusion when changing or testing the project.

How lkuczborski/Codeck configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to lkuczborski/Codeck. 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/lkuczborski/Codeck/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/lkuczborski/Codeck

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/lkuczborski/codeck/agents-md/github.svg)](https://agentmods.dev/instructions/lkuczborski/codeck/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/lkuczborski/codeck/agents-md"><img src="https://agentmods.dev/badge/instructions/lkuczborski/codeck/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/lkuczborski/codeck/agents-md"><img src="https://agentmods.dev/badge/instructions/lkuczborski/codeck/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 612 This file is loaded in full into every session.

When invoked 612 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.

Model	Per session	Once invoked
Fable 5.1	$0.00612	$0.00612
Opus 5.5	$0.00245	$0.00245
Sonnet 5.5	$0.00122	$0.00122
Haiku 4.5	$0.00061	$0.00061

Measured 2mo ago against content hash 3eb8d17ab11a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Codeck 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 · 32 lines

How it starts

The opening of the file, as written. The whole thing — 32 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Project Structure & Module Organization

Codeck is a Swift Package Manager project for macOS 14+. Source code lives in Sources/ and is split into three targets: Codeck for the native macOS app, CodeckCore for shared document and model logic, and CodeckMCP for the codeck-mcp executable. Tests live in Tests/CodeckTests. App and document icons are in Resources/, sample .mdeck decks are in Examples/, and the static site is in docs/. Generated build products belong in .build/ or dist/ and should not be committed.

Build, Test, and Development Commands

brew bundle: install local tools (swiftformat, swiftlint).
swift build: compile all package targets.
swift test: run the XCTest suite.
swift run codeck-mcp: run the file-based MCP server from the repository root.
script/format.sh: format Package.swift, Sources, and Tests.
script/lint.sh: run SwiftFormat lint mode and SwiftLint.
script/build_and_run.sh [run|--debug|--logs|--telemetry|--verify]: build an app bundle in dist/ and launch or inspect it.

Coding Style & Naming Conventions

Use Swift 6 conventions and keep code formatted by SwiftFormat. The root .swiftformat uses 4-space indentation, --maxwidth 160, preserved argument and collection wrapping, trimmed whitespace, and no semicolons. SwiftLint covers Package.swift, Sources, and Tests; notable rules include sorted imports, closure spacing, first(where:)/contains preferences, and line length warnings at 160 characters. Prefer clear Swift type names in UpperCamelCase and methods/properties in lowerCamelCase. Keep target-specific code inside its target directory.

Testing Guidelines

Tests use XCTest and are grouped by feature in Tests/CodeckTests, usually with filenames ending in Tests.swift. Name test methods descriptively, for example testParsesThemeAndSlideSeparatorsOutsideFences. Run swift test before submitting changes; add or update tests for parser behavior, document mutations, MCP protocol handling, and user-visible model logic.

Read the full file on GitHub · 32 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.

2mo ago First seen · 32 lines · 612 tokens per session scan A 3eb8d17ab11a

Subscribe to this mod's changes

Codeck AGENTS.md is an instructions file published in the GitHub repository lkuczborski/Codeck (40 stars, last pushed yesterday), licensed MIT. It adds 612 tokens to every session, about $0.0024 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.

codex codex-cli markdown presentation-slides

Codeck AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
Codeck AGENTS.mdlkuczborski/Codeck	Instructions file	40	yesterday	MIT	A	612	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

Codeck: Instructions file for Codex