The desktop view of a demo company. It leads with the answer, then the evidence.
+The viewer, on a demo company. You work by talking to Claude or Codex; the viewer is for looking.
The desktop view is read-only and live: whatever your bookkeeper posts appears in a fraction of a second. Click any amount on a statement for the transactions behind it. Click a transaction for its lines, the receipt itself, and every event in its history.
+Everything that changes your books happens in conversation with Claude or Codex. The viewer is the other half: a live, read-only window on the books for browsing, searching, and reports. Whatever your bookkeeper posts shows up there in a fraction of a second, and every number goes all the way down: click an amount on a statement for the transactions behind it, then a transaction for its lines, the receipt itself, and its history.
An AI is keeping your books, so the books have to be impossible to quietly get wrong.
Every entry balances exactly; money is exact decimal, never floating point. Posted entries are permanent; corrections are reversing entries. The receipt rule is enforced by the server, not left to the AI's judgment.
Every change is an event hash-chained to the one before. The database is checked against the journal table by table, and rebuilt if it ever drifts; every receipt is checked against its hash. The desktop view shows you the result.
The bookkeeper previews every posting before it happens and waits for you. The desktop view can't change anything at all.
Every change is an event hash-chained to the one before. The database is checked against the journal table by table, and rebuilt if it ever drifts; every receipt is checked against its hash. The viewer shows you the result.
The bookkeeper previews every posting before it happens and waits for you. The viewer can't change anything at all.
Needs a C compiler and git (build-essential on Debian and Ubuntu). The installer tells you if anything's missing.
Needs Apple's command line tools: xcode-select --install.
Run it inside WSL2 (wsl --install, then Ubuntu). On Windows 11 the desktop view opens as a normal window. Native Windows is on the way.
Run it inside WSL2 (wsl --install, then Ubuntu). On Windows 11 the viewer opens as a normal window. Native Windows is on the way.
Already installed? wanderbooks new ~/Books/AnotherCompany. In a books folder, just agent starts your bookkeeper and just gui opens the desktop view.
Already installed? wanderbooks new ~/Books/AnotherCompany. In a books folder, just agent (or just codex) starts your bookkeeper and just gui opens the viewer.
Nothing. wanderbooks is free and open source (MIT or Apache-2.0), with no account and no subscription. The bookkeeper is the AI you already use: Claude Code (included with Claude Pro and Max, or on API credits) or Codex (included with ChatGPT plans, or on API credits). There's nothing else to buy.
MCP is the standard way AI tools like Claude Code and Codex plug into other software. wanderbooks is an accounting engine that speaks it: your AI calls its tools to draft entries, attach receipts, and run reports, and the engine enforces the accounting rules. The one-line installer sets it up; you never have to touch it.
You need to paste one command into a terminal, once. After that you talk to your bookkeeper in plain English and read your books in the desktop app.
You need to paste one command into a terminal, once. After that you talk to your bookkeeper in plain English, in Claude Code or Codex, and look at your books in the viewer whenever you like.
Give your AI access to your email (in Claude, an email connector like Gmail's or the Claude browser extension with your mail open) and ask. It searches for the vendor and amount, files one clean PDF per receipt, and attaches it to the entry. It asks before downloading anything, and it never types passwords or account numbers.
Your books are files on your computer: a journal, your receipts, and a settings file, in a git repository you control. Nothing is uploaded to wanderbooks; there is no wanderbooks server. What your bookkeeper reads to help you goes to your AI provider (Anthropic or OpenAI), like any other conversation with it.
Every posting is previewed before it happens. If something slips through, it's corrected the way accountants do it, with a reversing entry, so the mistake and the fix are both on the record. The engine itself refuses anything that doesn't balance, anything without a required receipt, and anything in a closed period.