70 lines
2.8 KiB
Markdown
70 lines
2.8 KiB
Markdown
# wanderbooks
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Canonical double-entry bookkeeping, rebuilt from scratch. The engine is
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verified against oracles, parity is tracked automatically, and the primary
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interface is AI-first: you talk to an agent, the agent drives the books
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through MCP. Self-hosted, no rent.
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## What it is
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- **`ledger-core`** — the semantics engine. Exact decimal money, five
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account types, balanced journal entries, immutable posted log with
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reversing entries, trial balance, P&L, balance sheet, indirect-method
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cash flow, fixed-asset register with straight-line depreciation.
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- **`ledger-store`** — durable storage. The source of truth is an
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append-only, hash-chained JSONL journal; SQLite is a disposable
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projection rebuilt from it; receipts live in a content-addressed blob
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store. Drafts are durable, corrupt projections self-heal.
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- **`ledger-mcp`** — the AI-first interface. 27 MCP tools over stdio or
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Streamable HTTP: draft → preview → post workflow, server-side receipt
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policy (>$25), anti-splitting detection, asset management, digest for
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human review, plus read-only resources for dashboards.
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- **`ledger-import`** — QuickBooks interop. Import bank/credit-card CSVs
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and chart-of-accounts CSVs; export IIF journal entries (for QuickBooks
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Desktop) and XLSX reports.
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## Verification
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This is the storytold way applied to accounting: agents verify against
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oracles, never ship what they haven't demonstrated.
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- 70 workspace tests: invariant tests encoding accounting law, golden-file
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report snapshots, property tests (proptest), end-to-end MCP stdio tests.
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- Mutation testing via cargo-mutants; fuzzing via cargo-fuzz (11.5M+
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executions, zero crashes).
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- GnuCash is the behavioral oracle (never a code source — clean room,
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MIT OR Apache-2.0).
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## Status
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Parity is 12 of 12 against the spreadsheet workflow it replaces
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(`docs/capability-parity.md`). The parallel-run plan
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(`docs/parallel-run.md`) is written; the Google Sheet stays the system of
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record until a clean month and explicit cutover approval.
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See [`plan/STATUS.md`](plan/STATUS.md) for where things stand and
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[`plan/roadmap.md`](plan/roadmap.md) for where it's going.
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## Quickstart
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```bash
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cargo test # whole suite
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cargo run -p ledger-mcp -- --data-dir /tmp/books # MCP server over stdio
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```
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## Layout
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```
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crates/ledger-core/ # engine: money, accounts, journal, ledger, reports
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crates/ledger-store/ # journal + SQLite projection + blob store
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crates/ledger-mcp/ # MCP server: 27 tools, resources, receipt policy
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crates/ledger-import/ # QBO CSV import, IIF/XLSX export
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docs/ # requirements, architecture, oracle, parity, glossary
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plan/ # STATUS.md, roadmap.md
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AGENTS.md # operating manual for agents working here
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```
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## License
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MIT OR Apache-2.0. See `LICENSE-MIT` and `LICENSE-APACHE`.
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