swaitsandClaude Fable 5.1
af553a3706
The planning session read plan/served.md, every design document and the five branches the owner paused on 2026-10-27 against main (44ee4083), with dry-run merges touching no branch. plan/2026-10-28_DRIFT_REPORT.md lists every divergence and judges every recorded departure (all kept; three owed back; one needs a decision: P6 made ledger-store depend on ledger-import). The plan: section 0 "What changed on 2026-10-28"; 8.0.1 and the unit Status lines name S4.4, S5, S6, S7 and P6 as built but unmerged; 8.0.2 records the destination (D-56: the installed app, P11a starts now) and the resume order with the known conflicts (the shared documents.rs test file, the types.rs appends, P6 retaking schema 18, the law numbers 34 to 37); 8.0.3 lists the names the EM approved during the wave; P11a gains step 0 (the macOS and Windows keyring stores, the Windows data root and pipes, a cross-platform CI build: today the agent path runs on Linux alone); Q-5 is due and Q-8 asks whether D-47 to D-54 stand; the Landlock sentences in section 2 and server.toml are struck. STATUS.md and HANDOFF.md say where things stand and how to resume; roadmap.md and gui.md are rewritten to today. The docs lose their stale facts: 122 tools, 2,700 tests, the parity floor at 21 with the P4b notes the slices never wrote, the ten crates and their dependency graph (jiff added to the core's allowed list), the cutover of 2026-10-20 recorded in capability-parity.md and parallel-run.md, the P4b S1 law and its two Kani harnesses added to verification.md (law 34), the proof counts (51 and 9), and README, the site and install.sh honest about macOS (the viewer runs; connecting an agent waits for P11a's keyring store, and the installer now says so instead of failing). just check on main at44ee4083: exit 0 (167 suites, 2,871 passed, 0 failed, 7 ignored, the server-only build clean). No code changed. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01HS8WZziDnyxunC23MUxrLp
137 lines
6.5 KiB
Markdown
137 lines
6.5 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, the statement of
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cash flows (direct method, with the reconciliation and noncash
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schedules), 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. 122 MCP tools (2026-10-28), served by the
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books server (`wanderbooks server`) on the data root's local sockets and
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reached through the agents' bridge (`wanderbooks mcp --book ID`): draft →
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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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- **`ledger-config`** — the company settings in a books dir's
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`wanderbooks.toml`.
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- **`ledger-gui`** — the viewer: a read-only, live window on the books for owners and their
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accountant (egui). Answers first (cash, runway, profit, what needs
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attention), then every number drills down to its lines, its entry, the
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rendered receipt, and the journal history. Follows the journal live:
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a change the agent makes appears in milliseconds. `--demo` opens a
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realistic demo company.
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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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- About 2,700 tests across the two workspaces (2026-10-28): invariant tests encoding accounting law, golden-file
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report snapshots, property tests (proptest), end-to-end MCP tests through
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a real books server.
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- **Formal proofs of the accounting laws** (`just prove`,
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`docs/verification.md`). Kani model-checks the engine's arithmetic
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kernel exhaustively within bounds. Lean 4 proves that, after any
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sequence of commands, the trial balance balances, the accounting
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equation holds, posted entries are forever, closed periods stay
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frozen, and a close moves exactly the net income to equity. The first
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pass found three engine bugs that every test, fuzzer, and mutant had
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missed: negative amounts accepted, and two crashes on oversized
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amounts. It also caught a soundness bug in the model checker itself.
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- Mutation testing via cargo-mutants (paused for development until the
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P12 max-testing pass, D-33; CI's weekly shards still run); fuzzing via
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cargo-fuzz (11.5M+ executions, zero crashes).
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- GnuCash is *a* behavioral cross-check, never the authority and never
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a code source (clean room, MIT OR Apache-2.0). Accounting principles,
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proved, are the spec. Where any other program disagrees, we work out
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from principles who is right.
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## Status
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Parity is 12 of 12 against the spreadsheet workflow it replaced
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(`docs/capability-parity.md`); the books cut over on 2026-10-20 and the
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Sheet is frozen as of 2026-10-11. The remaining work, its order and its
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hand-off are `plan/served.md` section 8.0; the destination is one
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installed app for Mac, Windows and Linux (P11), then the hosted service
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the plan describes and does not build. Today the agent path runs on
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Linux: tokens live in the OS keyring and only the Linux Secret Service
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store exists, so on macOS the viewer and server run but `wanderbooks
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connect` and the agent bridge wait for P11's keyring stores; Windows is
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WSL2 only.
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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-gui -- --demo # the viewer, on a demo company
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```
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New books, one command (installs Rust and wanderbooks if needed, makes the
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books' private folder, starts books called `acme` and lets Claude Code reach
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them; nothing needs sudo):
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```bash
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curl -fsSL https://wanderbooks.ai/install.sh | sh -s -- acme
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```
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(Linux today. On macOS the same line installs and sets up, and the
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viewer runs, but connecting an agent waits for P11's keyring store; on
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Windows run it inside WSL2.)
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Already installed, three commands: `wanderbooks setup`, `wanderbooks books
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create acme`, `wanderbooks connect claude --book acme` (or `connect codex`).
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Then talk to the agent; `wanderbooks gui acme` shows the books, and its
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Books menu backs them up, restores, starts new books and closes them.
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## Developing
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Every tool the recipes use (Rust, just, Kani, Lean, cargo-mutants,
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cargo-fuzz, Node for deploys) is pinned in `mise.toml`:
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```sh
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mise install
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just # lists the recipes: check, build, prove, demo, ...
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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: 122 tools, resources, handbook, receipt policy
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crates/ledger-import/ # QBO CSV import, IIF/XLSX export
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crates/ledger-config/ # wanderbooks.toml company settings
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crates/ledger-cli/ # `wanderbooks`: the one executable (every mode)
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crates/ledger-host/ # the host, the agents' bridge, the owner's commands
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crates/ledger-package/ # the shared read-only view: the CPA package, the invoice PDF, Needs attention
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crates/ledger-vault/ # the TIN vault (XChaCha20-Poly1305 under the book's key)
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crates/ledger-gui/ # the viewer: read-only, live (egui)
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verify/lean/ # the accounting laws as Lean theorems (`just prove`)
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bookspec/ # the formal accounting specification: checker, runner, examples (P13)
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fuzz/, oracle/ # fuzz targets; the GnuCash differential (`just oracle`)
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deploy/ # the self-host recipe and system unit (P9a)
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site/ # wanderbooks.ai and install.sh
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docs/ # requirements, architecture, oracle, parity, testing, verification, spec, glossary
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plan/ # served.md (the plan), STATUS.md, roadmap.md, HANDOFF.md, gui.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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