Use them when implementing features, fixing bugs, writing tests, updating the CSV-to-JSON data flow, or deploying the app to GitHub Pages.

They give a coding agent the project context and conventions needed to make changes that fit the existing application.

How Taka499/ss-assist configures Claude Code

Q: What is ss-assist CLAUDE.md?

Project instructions for working on ss-assist, a browser-based tool that helps players choose character combinations for commissions in the Stella Sora game. They describe its React, TypeScript, Vite, Tailwind CSS, Zustand, testing, routing, and deployment setup.

Reuse

Borrowing it

Nothing to install: this file belongs to Taka499/ss-assist. 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/Taka499/ss-assist/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Taka499/ss-assist

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/taka499/ss-assist/claude-md/github.svg)](https://agentmods.dev/instructions/taka499/ss-assist/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/taka499/ss-assist/claude-md"><img src="https://agentmods.dev/badge/instructions/taka499/ss-assist/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/taka499/ss-assist/claude-md"><img src="https://agentmods.dev/badge/instructions/taka499/ss-assist/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,291 This file is loaded in full into every session.

When invoked 3,291 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	$0.03291	$0.03291
Opus 5.5	$0.01316	$0.01316
Sonnet 5.5	$0.00658	$0.00658
Haiku 4.5	$0.00329	$0.00329

Measured 1mo ago against content hash 182f9c4d88f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ss-assist 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 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.

CLAUDE.md · 408 lines

How it starts

The opening of the file, as written. The whole thing — 408 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.

ExecPlans

When writing complex features or significant refactors, use an ExecPlan (as described in _docs/PLANS.md) from design to implementation.

Project Overview

ステラソラ依頼アシスト (Stella Sora Request Assistant) is a serverless SPA that helps players optimize character combinations for commissions in the Stella Sora game. The application runs entirely client-side with no backend, deployed to GitHub Pages.

Live: https://taka499.github.io/ss-assist/

Tech Stack

Frontend: Vite + React 18 + TypeScript 5 (strict mode)
Styling: Tailwind CSS
State: Zustand with localStorage persistence
Testing: Vitest with co-located test files
Deployment: GitHub Pages via GitHub Actions
Routing: Hash-based routing (no React Router)

Key Architecture Patterns

1. Data Pipeline (CSV → JSON → React)

The data flow is: Human-editable CSV → Generated JSON (gitignored) → React components

data-sources/*.csv  (source of truth, committed)
  ↓ npm run build:data
data/*.json         (generated, gitignored)
  ↓ src/lib/data.ts (singleton loader)
React components    (via useAppStore + lib functions)

Why JSON files are gitignored:

CSV files are owned by game designers, not developers
Prevents merge conflicts when multiple people edit game data
GitHub Actions regenerates JSON automatically during deployment
Treats generated data like compiled code (similar to dist/)

2. Bitmask System for O(1) Tag Matching

The most sophisticated optimization in the codebase. Each tag category (role, style, faction, element, rarity) uses a 32-bit integer where each bit represents a tag. This enables O(1) tag matching via bitwise AND operations.

Example:

// Character has: role-001 (bit 0) and role-003 (bit 2)
characterMask = 0b0101 = 5

// Mission needs: role-001 OR role-002
conditionMask = 0b0011 = 3

// Check satisfaction with bitwise AND
(characterMask & conditionMask) !== 0  // → true (satisfied)

Read the full file on GitHub · 408 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.

1mo ago Changed · +4 lines · +174 tokens per session 182f9c4d88f7
2mo ago First seen · 404 lines · 3,117 tokens per session scan A dc90d5a9f67e

Subscribe to this mod's changes

ss-assist CLAUDE.md is an instructions file published in the GitHub repository Taka499/ss-assist (3 stars, last pushed 23d ago), licensed MIT. It adds 3,291 tokens to every session, about $0.0132 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 2026-08-31.

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ss-assist: Instructions file for Claude Code