What is Confetti CLAUDE.md?

A repository-specific instruction file for Claude Code, an AI coding assistant. It describes Confetti’s SwiftUI package, development commands, architecture, and important files.

It helps with building, testing, linting, formatting, opening the project in Xcode, and preparing pull requests.

It gives the assistant the project context needed to make changes in line with the repository’s structure and checks.

How Koshimizu-Takehito/Confetti configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Koshimizu-Takehito/Confetti. 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/Koshimizu-Takehito/Confetti/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Koshimizu-Takehito/Confetti

Made for: Claude Code.

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/koshimizu-takehito/confetti/claude-md/github.svg)](https://agentmods.dev/instructions/koshimizu-takehito/confetti/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/koshimizu-takehito/confetti/claude-md"><img src="https://agentmods.dev/badge/instructions/koshimizu-takehito/confetti/claude-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/koshimizu-takehito/confetti/claude-md"><img src="https://agentmods.dev/badge/instructions/koshimizu-takehito/confetti/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 839 This file is loaded in full into every session.

When invoked 839 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	$0.00839	$0.00839
Opus 5.5	$0.00336	$0.00336
Sonnet 5.5	$0.00168	$0.00168
Haiku 4.5	$0.00084	$0.00084

Measured 2mo ago against content hash d902828fb1fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Confetti CLAUDE.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.

CLAUDE.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Confetti is a Swift package providing beautiful confetti particle animations for SwiftUI applications. It supports iOS 18+ and macOS 15+ with a clean, testable architecture.

Development Commands

Use these Make commands for development:

make setup     # Install Mint and dependencies  
make build     # Build the package
make test      # Run tests
make lint      # Run SwiftLint
make format    # Format code with SwiftFormat
make ci        # Run all CI checks (required before PRs)
make open      # Open package in Xcode
make open-example # Open example project

Always run make ci before submitting pull requests to ensure all checks pass.

Architecture

The project follows a 3-layer modular architecture with strict encapsulation:

ConfettiUI (SwiftUI Views & Components)
    ↓ Uses public API only
ConfettiPlayback (Playback Control & Rendering)
    ↓ Exposes minimal interface via computed properties
ConfettiCore (Internal Domain Models & Physics) - Hidden from external access

Key Modules:

/Sources/ConfettiCore/ - Internal module - Core physics engine, state machine, and domain models (not exposed publicly)
/Sources/ConfettiPlayback/ - Public API - ConfettiPlayer with encapsulated interface; hides ConfettiSimulation internals
/Sources/ConfettiUI/ - UI layer - SwiftUI views and components built on public API
/Example/ - Complete demo app for iOS/macOS
/Tests/ - Unit tests using Swift Testing framework

Encapsulation Strategy:

ConfettiPlayer exposes only: renderStates, currentTime, duration, state (all read-only computed properties)
Internal ConfettiSimulation is private, preventing external state manipulation
SSoT maintained through version-based cache invalidation (~180x speedup)

Key Files to Understand

/Sources/ConfettiPlayback/Playback/ConfettiPlayer.swift - Main public API with video-player-like controls; encapsulates internal ConfettiSimulation
/Sources/ConfettiCore/Simulation/ConfettiSimulation.swift - Internal SSoT state machine with @Observable pattern and version-based caching
/Sources/ConfettiCore/Config/ConfettiConfig.swift - Configuration system with presets
/Sources/ConfettiUI/Views/ConfettiScreen.swift - Primary SwiftUI component
/Sources/ConfettiCore/Documentation.docc/Articles/PublicAPIContract.md - v2.0.0 breaking changes and SSoT architecture documentation

Read the full file on GitHub · 87 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 · 87 lines · 839 tokens per session scan A d902828fb1fc

Subscribe to this mod's changes

Confetti CLAUDE.md is an instructions file published in the GitHub repository Koshimizu-Takehito/Confetti (13 stars, last pushed 6d ago), licensed MIT. It adds 839 tokens to every session, about $0.0034 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 2026-09-04.

Memory and context metal spritekit swift swift6 swiftui uikit

Confetti CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
Confetti CLAUDE.mdKoshimizu-Takehito/Confetti	Instructions file	13	6d ago	MIT	A	839	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

Confetti: Instructions file for Claude Code