What is PowerScroll CLAUDE.md?

Project-specific instructions for developing PowerScroll, an offline-first note-taking, presentation, and whiteboard application. They describe its React and TypeScript setup, testing approach, and required process for handling feedback.

Use them when changing PowerScroll, especially after bug reports or feature requests, to update project records and assess whether new requirements and tests are needed.

They keep changes aligned with the project's architecture and require feedback to be tracked in the plan, task list, and software requirements documents.

How CynaCons/PowerScroll configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to CynaCons/PowerScroll. 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/CynaCons/PowerScroll/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/CynaCons/PowerScroll

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/cynacons/powerscroll/claude-md/github.svg)](https://agentmods.dev/instructions/cynacons/powerscroll/claude-md)

Your own site

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

Per session 1,696 This file is loaded in full into every session.

When invoked 1,696 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	$0.01696	$0.01696
Opus 5.5	$0.00678	$0.00678
Sonnet 5.5	$0.00339	$0.00339
Haiku 4.5	$0.00170	$0.00170

Measured 2mo ago against content hash f8c64b63f129, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

PowerScroll 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 · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PowerScroll — Claude Instructions

Project Overview

PowerScroll (formerly PowerNote) is an offline-first, file-based visual note-taking app combining OneNote structure, a presentation canvas, and whiteboard freedom. Built with React 18 + TypeScript + Vite + Konva.js + Zustand.

Tech Stack

Canvas: Konva.js (react-konva) — MIT license, chosen over tldraw ($6K/year)
State: 9 Zustand stores (workspace, canvas, draw, tool, group, bridge, diagram, editor, fileBinding)
Text: Markdown rendering via marked, raw editing in textarea overlay
Testing: Playwright E2E, ASPICE-style SRS docs with traceability

Critical Workflow: Handling User Feedback

When the user gives feedback, bug reports, or feature requests — ALWAYS do these 3 things before writing code:

Update PLAN.md — Add a task under the current iteration with - [ ] checkbox
Create a TodoWrite — Track the work item as in_progress
Assess SRS impact — Check if a new requirement (REQ-XXX-NNN) is needed in the relevant docs/SRS_*.md. If yes, add it with a test reference.

Only then proceed with implementation.

PLAN.md Format (STRICT)

Markdown checklists with - [ ] / - [x]
Version-numbered iterations: v0.1.0, v0.1.1, v0.2.0, etc.
Each iteration has a title and summary
Status table at the bottom
Update in real-time as tasks are completed

powerplan MCP (PLAN.md operations)

PowerNote vendors powerplan as a git submodule at powerplan/ and registers it in project .mcp.json.

Server: powerplan (stdio) — python powerplan/powerplan_server.py
Purpose: single-writer API over PLAN.md (create iterations, complete tasks, current-iteration queries) without freeform thrash
Default plan: walk-up from cwd finds this repo’s root PLAN.md

Setup after clone:

git submodule update --init --recursive
# optional: pip install -e ./powerplan

Prefer MCP tools (get_current_iteration, complete_task, …) over hand-editing PLAN checkboxes when the server is available. Restart the agent session after changing .mcp.json so tools load.

Read the full file on GitHub · 139 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 · 139 lines · 1,696 tokens per session scan A f8c64b63f129

Subscribe to this mod's changes

PowerScroll CLAUDE.md is an instructions file published in the GitHub repository CynaCons/PowerScroll (0 stars, last pushed 2d ago), licensed MIT. It adds 1,696 tokens to every session, about $0.0068 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.

Planning Productivity React ai-agents infinite-canvas local-first mcp offline-first

PowerScroll CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
PowerScroll CLAUDE.mdCynaCons/PowerScroll	Instructions file	0	2d ago	MIT	A	1,696	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

PowerScroll: Instructions file for Claude Code