What is ledger CLAUDE.md?

A project reference document for Ledger, a macOS desktop app that manages Git repositories, branches, pull requests, and workspaces used by several coding agents. It describes the project, its technology, architecture, files, and main interfaces.

Use it when developing, reviewing, or debugging the Ledger application.

It gives an agent the project-specific context needed to understand how Ledger is organised and how its parts communicate.

How peterjthomson/ledger configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to peterjthomson/ledger. 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/peterjthomson/ledger/master/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/peterjthomson/ledger

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/peterjthomson/ledger/claude-md/github.svg)](https://agentmods.dev/instructions/peterjthomson/ledger/claude-md)

Your own site

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

Per session 4,324 This file is loaded in full into every session.

When invoked 4,324 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	$0.04324	$0.04324
Opus 5.5	$0.01730	$0.01730
Sonnet 5.5	$0.00865	$0.00865
Haiku 4.5	$0.00432	$0.00432

Measured 2mo ago against content hash 1dba5fe4b9db, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ledger 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 · 474 lines

How it starts

The opening of the file, as written. The whole thing — 474 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md - Ledger Project Reference

Project Overview

Ledger is a macOS Electron desktop application for managing Git repositories with first-class support for AI agent worktrees, Pull Requests, and Branches. It provides real-time visibility into multiple parallel coding agents (Cursor, Claude, Conductor, Gemini, Junie) working in Git worktrees.

Core Value Proposition: Traditional Git interfaces don't surface multi-worktree activity from AI agents. Ledger solves this by detecting agent workspaces, showing live diff stats, and providing unified branch/PR/worktree management.

Tech Stack: Electron 37 + React 19 + TypeScript 5 + Vite + simple-git

Architecture

┌─────────────────────────────────────────────────────────────┐
│                    Main Process (Node.js)                   │
│  lib/main/main.ts          - IPC handler registration       │
│  lib/main/git-service.ts   - All Git operations (3030 LOC)  │
│  lib/main/settings-service.ts - JSON persistence            │
│  lib/main/app.ts           - Window creation                │
└──────────────────────────┬──────────────────────────────────┘
                           │ ipcMain.handle() / ipcRenderer.invoke()
┌──────────────────────────┴──────────────────────────────────┐
│                   Preload Script (Bridge)                   │
│  lib/preload/preload.ts - contextBridge.exposeInMainWorld   │
└──────────────────────────┬──────────────────────────────────┘
                           │ window.electronAPI
┌──────────────────────────┴──────────────────────────────────┐
│                 Renderer Process (React)                    │
│  app/app.tsx              - Main component (~4000 LOC)      │
│  app/renderer.tsx         - React mount point               │
│  app/components/          - UI components                   │
│  app/styles/app.css       - Styling with CSS variables      │
└─────────────────────────────────────────────────────────────┘

IPC Pattern: All async via ipcMain.handle() ↔ ipcRenderer.invoke(). Kebab-case channels. Standard response: { success: boolean, message: string }.

Read the full file on GitHub · 474 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 · 474 lines · 4,324 tokens per session scan A 1dba5fe4b9db

Subscribe to this mod's changes

ledger CLAUDE.md is an instructions file published in the GitHub repository peterjthomson/ledger (327 stars, last pushed 1mo ago), licensed MIT. It adds 4,324 tokens to every session, about $0.0173 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.

Git and workflow Project management agent-collaboration version-control

ledger CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ledger CLAUDE.mdpeterjthomson/ledger	Instructions file	327	1mo ago	MIT	A	4,324	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	today	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

ledger: Instructions file for Claude Code