SessionDeck: Instructions file for Claude Code

CLAUDE.md

SessionDeck CLAUDE.md is an instructions file for Claude Code from eyalBPM/SessionDeck. It costs 2,068 tokens per session, scanned A, original, MIT.

A project instruction file for Claude Code, describing how to build, run, test, version, and deploy SessionDeck, a Windows desktop app for managing Claude Code sessions.

In plain words
What is it for?
Use it as a working guide when developing, testing, deploying, or changing hooks and related tools in the SessionDeck project.
Why use it?
It gives the coding agent project-specific rules and commands, including how to avoid build failures while the app is running.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions Claude Code.

This is eyalBPM/SessionDeck's own configuration. It tells Claude Code how to work on SessionDeck 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 SessionDeck configures →

Reuse

Borrowing it

Nothing to install: this file belongs to eyalBPM/SessionDeck. 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/eyalBPM/SessionDeck/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/eyalBPM/SessionDeck

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.

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README.md
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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.

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Per session 2,068 This file is loaded in full into every session.
When invoked 2,068 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.02068 $0.02068
Opus 5.5 $0.00827 $0.00827
Sonnet 5.5 $0.00414 $0.00414
Haiku 4.5 $0.00207 $0.00207

Measured 2mo ago against content hash 1cac54dc0082, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

SessionDeck 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 · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SessionDeck — working notes for Claude Code

A WPF (.NET 10, Windows-only) control deck for Claude Code sessions. The UI and the CLI are the same exe: launched with no arguments it raises the window plus a named-pipe server (\\.\pipe\sessiondeck); launched with arguments it acts as a client against the running instance. A companion VSCode extension (vscode-extension/) reports tabs and the git branch over that pipe and opens sessions on request.

Public-facing overview: README.md. Hook wiring, the waiting-detection thresholds and the toggles: hooks/README.md — that file is the authoritative source Cli/HookInstaller.cs must match exactly.

Build, run, deploy

The running app locks its own exe. Building over a live instance fails with MSB3027. Always:

.\bin\Debug\net10.0-windows\SessionDeck.exe quit     # graceful — releases the AppBar
Start-Sleep -Milliseconds 1500
dotnet build -c Debug
Start-Process .\bin\Debug\net10.0-windows\SessionDeck.exe

Never Stop-Process -Force: the Reserved Zone is released in OnClosing only, and a forced kill leaves Windows' work area permanently shrunk with no way for the user to tell why.

To compile without touching a running instance (a syntax check that skips the copy step):

dotnet msbuild SessionDeck.csproj -t:Compile -p:Configuration=Debug -v:m

WinExe means CLI output only reaches a parent console through AttachConsole(ATTACH_PARENT_PROCESS) — expect no captured stdout from tooling.

Tests

powershell -NoProfile -ExecutionPolicy Bypass -File .\tests\install-hooks.tests.ps1 -Exe <path to SessionDeck.exe>

38 cases over the install-hooks / uninstall-hooks merge: a missing settings file, an empty one, hooks from an old path, another tool's hooks on the same event, malformed JSON, a second run in a row, dry-run, and a shared group where only our entry may be removed. Run it against the exe you actually built.

These tests passing does not mean the status lifecycle works. They cover the installer only. A card can stay blue, blink wrongly or go quiet while all 38 pass — see "Debugging status and blink" below.

Read the full file on GitHub · 148 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 · 148 lines · 2,068 tokens per session scan A 1cac54dc0082

Subscribe to this mod's changes

SessionDeck CLAUDE.md is an instructions file published in the GitHub repository eyalBPM/SessionDeck (1 stars, last pushed 2mo ago), licensed MIT. It adds 2,068 tokens to every session, about $0.0083 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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