Canonical double-entry bookkeeping, rebuilt from scratch — the storytold way: an engine verified against oracles, with automated parity tracking, on its way to becoming a self-hosted bookkeeping app that never charges rent.

Private while it cooks.

Status

Phase 1: the semantics engine. ledger-core implements the accounting laws in Rust — exact decimal money, five account types, balanced journal entries, immutable posted log with reversing entries, trial balance, P&L, and balance sheet — with 14 invariant tests and golden-file report snapshots.

See plan/STATUS.md for where things stand and plan/roadmap.md for where they're going.

Quickstart

cargo test

That's the whole test suite: validation rejections, immutability, the accounting equation on a fixture company, a 300-entry randomized invariant test, and the golden oracle test.

Layout

crates/ledger-core/   # the engine: money, accounts, journal, ledger, reports
docs/                 # requirements, architecture, oracle design, parity, glossary
plan/                 # STATUS.md, roadmap.md
AGENTS.md             # operating manual for agents working here

The idea, briefly

storytold/ArtCraft showed that agents can clone full applications with the right machinery: screenshot-in-the-loop verification, render oracles, and automated parity floors. wanderbooks adapts that pipeline to bookkeeping, where the oracle is semantic instead of visual — GnuCash (open source, open formats) is both the spec and the reference implementation we diff against, and two engines fed the same books must produce byte-identical reports. Details in docs/oracle.md.

License

MIT OR Apache-2.0. See LICENSE-MIT and LICENSE-APACHE.