Bus is a modular, Git-native, CLI-first toolkit for running a business — built on open, long-lived formats and transparent, auditable workflows, designed for humans and AI agents.

A BusDK workspace is designed to live in a Git repository, where business data is stored as UTF-8 CSV datasets and validated using Frictionless Data Table Schema (JSON) as the authoritative source of typing and constraints. The focus is on simple primitives, deterministic behavior, and workflows that work equally well for humans and automated agents.

BusDK is currently pre-release and under active development: interfaces, schemas, and file conventions may still change, and not all modules are feature-complete. The long-term goal is a suite of focused subcommand binaries invoked through the core bus dispatcher (see also: https://github.com/busdk/bus). Specifications and documentation live in https://github.com/busdk/docs.

• bus-accounts — Chart of Accounts / account master data for BusDK workspaces.
• bus-assets — Fixed asset register in schema-validated CSV, including depreciation schedules, depreciation postings for bus-journal/bus-period, and audit-friendly acquisition/disposal reporting.
• bus-attachments — Document archive for receipts and supporting files, with Frictionless-schema CSV metadata so other modules can link records to verifiable, Git-friendly attachments.
• bus-bank — Bank statement import and reconciliation: parse bank CSVs, match transactions to invoices/accounts, and emit balanced journal entries into the append-only ledger.
• bus-budget — Budgeting: manage schema-validated CSV budgets and generate budget-vs-actual variance reporting from the ledger.
• bus-entities — Durable IDs for customers, vendors, banks, and authorities (CSV + Frictionless schemas), with validation and matching hints (e.g., names, IDs, IBAN) for reliable cross-module linking.
• bus-inventory — Inventory and stock records as schema-validated CSV: items, stock movements, stocktakes, and inventory valuation support that can produce deterministic postings for bus-journal/bus-period.
• bus-invoices — Sales and purchase invoices as Frictionless CSV datasets, with deterministic validation, CLI tooling, and optional auto-posting to bus-journal.
• bus-journal — Double-entry journal for recording and validating ledger transactions (CSV + Frictionless Table Schema).
• bus-payroll — Payroll runs as schema-validated datasets: earnings/deductions and employer liabilities, with deterministic journal postings and audit-friendly payroll summaries.
• bus-period — Open, close, and lock accounting periods; generate closing entries and next-period opening balances to keep closed periods immutable.
• bus-reconcile — Bank reconciliation: match imported bank transactions to invoices or journal entries, allocate payments (partials/splits/fees), and record reconciled state as append-only CSV with Frictionless schemas.
• bus-reports — Reporting: generate trial balance, general ledger, profit & loss, and balance sheet, with integrity checks and text/CSV/JSON outputs.
• bus-validate — Workspace validation: check each CSV against its Frictionless schema, verify cross-table integrity, and enforce core double-entry invariants.
• bus-vat — Finnish VAT (ALV): compute VAT from Bus workspaces, validate VAT code/rate mappings, reconcile invoice VAT vs ledger postings, and produce period summaries and export files for reporting and archiving.
• bus-filing — Filing target dispatcher invoked as bus filing …, discovering and executing bus-filing-<target> binaries.
• bus-filing-prh — PRH filing target for bus filing prh …, generating PRH-ready financial statement export bundles from a closed, validated workspace.
• bus-filing-vero — Vero filing target for bus filing vero …, generating Vero-ready tax filing export bundles from a closed, validated workspace.