Jakob Wennberg
67e878fb23
* fix(mcp): reject unparseable voucher lines and allocation kinds; already-booked and unlinkable say why; N:1 reconcile groups survive staging
Four MCP feedback reports about the same failure class: the server does no
runtime validation of inputSchema, so a shape mistake was coerced into a
wrong-but-well-formed call, and the error the agent finally saw pointed at
the wrong thing.
- create_voucher / correct_entry: a line naming neither debit_amount nor
credit_amount was `Number(undefined) || 0`-ed into 0/0, and the balance
check reported "debits 0 SEK, credits 0 SEK" for four perfectly balanced
formats ({debit}, {amount, side}, {debitAmount}, signed amount). The line
shape is now checked first, the error names the keys it got and shows a
valid line, and a non-numeric amount is rejected as such (seq 318571).
- match_batch_allocate: kind is the key every guard branches on (direction
vs sign, required id per kind, tenant pre-check on the invoices). With
kind absent none of them fired: an incoming +50 359 SEK payment against
three kundfakturor staged as allocations_kind "supplier_invoice" with zero
invoice checks. A missing or unknown kind is now rejected before any
query, with the id field that goes with each kind (seq 319919).
- categorize_transaction on an already-booked transaction returned the
core's success-shaped object, which fails STAGED_OPERATION_SCHEMA on
strict clients: the agent saw "Structured content does not match the
tool's output schema" and never the reason. It now throws, naming the
existing journal_entry_id (seq 288574).
- reconcile_match: the dry run flattens a pair into one link per outside
row, and the staging rebuild put each back as its own 1:1 pair, so an N:1
group (Skatteverket "Avdragen skatt" + "Arbetsgivaravgift" against one
1630 verifikat, sum exact) reached the executor as N pairs each asked to
settle the whole verifikat: PAIR_NOT_CLOSED on all 18. Links sharing a
verifikat now fold back into one pair, mirroring the existing 1:N fold,
and "No linkable pairs" carries the dry run's skip reasons (seq 292682).
No tools/list payload change: no schema text touched.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013yw62FMXGSzo6icFDiBwP3
* docs(decisions): N:1 reconcile fold at staging
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013yw62FMXGSzo6icFDiBwP3
---------
Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Accounted
Open-source Swedish accounting software for sole traders (enskild firma) and limited companies (aktiebolag). Double-entry bookkeeping that complies with Swedish accounting law, built to be operated by you or by your AI agent.
Website · Hosted app · Documentation
Why Accounted?
Compliant by construction. Accounted implements double-entry bookkeeping under Swedish accounting law (Bokföringslagen). Voucher immutability, sequential voucher numbering, period locks, and 7-year document retention are enforced by database triggers, not by convention. Corrections are made the legal way, with reversal entries (storno), never by editing history. See ARCHITECTURE.md for how.
Agent-native. The full bookkeeping engine is exposed as 150+ MCP (Model Context Protocol) tools with scoped API keys or OAuth, so an AI agent can do the books in Accounted: categorize transactions, draft vouchers, reconcile periods, and prepare declarations. Posting is staged for human approval, so the agent proposes and you decide.
Yours to run. AGPL-3.0 licensed and fully self-hostable with Docker and Supabase. Use the hosted version at app.gnubok.se or run your own.
Features
- Double-entry bookkeeping -- BAS 2026 chart of accounts, draft/commit workflow, sequential voucher numbering
- Invoicing -- Create, send, and track invoices with mixed VAT rates and PDF generation
- Bank reconciliation -- PSD2 bank connection via Enable Banking, 4-pass automatic matching
- VAT declaration -- SKV 4700 form mapping, per-rate breakdown, EU/export handling
- Tax reports -- NE-bilaga, INK2, SRU export for Skatteverket
- Payroll -- Salary runs, payslips, and AGI (arbetsgivardeklaration) employer declarations
- Supplier invoices -- Registration, payment tracking, input VAT deduction
- Supplier payment files (betalfil) -- Batch supplier payments into ISO 20022 pain.001 files for upload to the bank, rendered byte-identical on every download
- E-invoicing (Peppol) -- Send and receive Peppol BIS Billing 3 e-invoices through Qvalia, a certified Swedish Access Point; received documents land in the supplier invoice inbox
- Skattekonto -- Tax account transactions synced from Skatteverket or imported from statement files, linked to the booked 1630 movements for reconciliation
- Document archive -- SHA-256 integrity, 7-year retention enforcement, full archive ZIP export
- SIE import/export -- Standard Swedish accounting interchange format
- Agent access (MCP) -- 150+ bookkeeping tools over the Model Context Protocol, with scoped API keys and staged approvals; connects to Claude, ChatGPT and Grok over OAuth 2.1
- Claude connector and plugin -- Connect Claude.ai or Claude Code over OAuth 2.1 and install approval-gated workflow skills (
/accounted:bookkeep,/accounted:vat,/accounted:year-end, ...) from claude-plugin/ - Extension system -- Opt-in plugins for AI categorization, receipt OCR, email, calendar, and more
Self-Hosting
git clone https://github.com/erp-mafia/accounted.git
cd accounted
./setup.sh # Prompts for Supabase credentials, generates .env
docker compose up -d
You need a Supabase project and must apply the database migrations before first use. See docs/SELF-HOSTING.md for the full step-by-step guide, including Supabase setup, auth configuration, optional features (AI, email, push notifications), and troubleshooting. To run everything on Swedish infrastructure (your own Supabase stack, Swedish hosting, AI on Swedish GPUs), see docs/SOVEREIGN.md.
Development Setup
Prerequisites: Node.js 20 or newer (CI runs Node 20; the Docker image ships Node 22), a Supabase project.
npm install
npm run dev # Start dev server (auto-generates extension registry)
npm test # Run tests
npm run build # Production build
npm run lint # ESLint
See CONTRIBUTING.md for the full development workflow.
Tech Stack
- Framework: Next.js 16 (App Router), React 19, TypeScript (strict)
- Database: Supabase (PostgreSQL + Row Level Security + email/password auth + TOTP MFA)
- Styling: Tailwind CSS 4 + shadcn/ui
- Integrations: Enable Banking (PSD2), Qvalia (Peppol), Skatteverket, Anthropic SDK on Amazon Bedrock (eu-north-1; direct Anthropic or any OpenAI-compatible endpoint for self-hosted via the Vercel AI SDK), Resend, JSZip
Documentation
- User and API documentation -- Guides for using the product and the public API
- ARCHITECTURE.md -- How the system is built: bookkeeping engine, legal enforcement, tenancy, extensions, agent surface
- docs/SELF-HOSTING.md -- Full self-hosting guide (Docker, Supabase setup, migrations, optional features)
- docs/EXTENSIONS.md -- Extension development guide
- docs/DOCKER.md -- Docker deployment reference
- CONTRIBUTING.md -- Development workflow, code style, pull request process
- SECURITY.md -- Vulnerability reporting policy
Community
- Found a bug or have an idea? Open an issue
- Security vulnerabilities: see SECURITY.md, never a public issue
- Everyone interacting in the project is expected to follow the Code of Conduct
Contributing
Contributions are welcome. See CONTRIBUTING.md for the full guide.
All commits require a DCO sign-off (git commit -s).
License
AGPL-3.0-or-later with an extension exception: third-party extensions that interact solely through the documented Extension API may be licensed under any terms, including proprietary. See LICENSE for details and NOTICE for third-party attributions.