Ekwo OS

Ekwo is open source accounting, ready to use on Ekwo Cloud: the web application for your invoices, your bank statements, your VAT returns and the electronic invoices your country uses, in your own instance, with an account opened in a minute. Ekwo OS is the free and open source core it runs on, under AGPL-3.0: install it on your own Supabase project and own your accounting data, forever.

Built and maintained by Ekwo. Ekwo OS is a schema, the rules of each country as data, and the tools — a command line and an MCP server — with which you, your accountant and the AI agent you choose work in the same books, each with their own access. Ekwo reads any supplier invoice, in any language, with the AI model you choose, and every entry is posted on your confirmation. What Ekwo is, and its limits: DISCLAIMER.md.

From an empty Supabase project to a prepared VAT return, for two countries side by side. How it was recorded: docs/demo/.

Try it on your own books. Already using Claude? Start with Claude goes from a free Supabase project to your own books taken over, questioned and your next VAT return prepared, in about twenty minutes. Or open the same books in the web application, Ekwo Cloud.

Why Ekwo

The long version — financial autonomy for every business, accounting as a commons, a network rather than a vendor — is in MANIFESTO.md.

The data belongs to the business, and the work of keeping the books can be done by software the business also owns. So the whole accounting core is open, the data sits in a Postgres database you control, and the interface is designed for machines as much as for people. Supabase gives the schema a REST API for free, and an MCP server sits on top of it, so an AI agent can book a purchase, match a payment or prepare a VAT return on your own data — as you, under your own row level security, without the data leaving your account.

What ships today:

• The core — schema, posting rules, taxes, reports, financial statements, as migrations you apply to a database you control.
• A country pack for every country listed below, each a versioned set of data with a year of books that proves it.
• ekwo, the command line — one command installs everything on your own Supabase project; the same tool then keeps books from a terminal.
• The MCP server, hosted at https://mcp.ekwo.ai/mcp or run locally with npx @ekwo-ai/mcp, so any AI agent can operate the books.
• Modules for fixed assets, budgets, corporate income tax and electronic invoicing.
• The compass of the company — financial_analysis() reads, from the posted entries, the aggregates a country pack defines (revenue, equity, cash, receivables, payables…), or, in a country whose pack defines none, thirteen of them read by account type through the generic framework, so that days of cash, net margin, current ratio, equity ratio, days of sales and of purchases outstanding and growth come from the books with nothing to set up. The Analysis screen of Ekwo Cloud and the financial_analysis tool of the MCP server read it; docs/analysis.md says how, and how a pack adds the section.
• Format libraries under MIT — the files administrations, banks and e-invoicing networks exchange, written and read.

Who it is for: a company that wants to keep its own books with an AI at the keyboard, and a founder who wants to know, from those books, how long the cash lasts and how fast customers pay; an accounting firm that runs several companies inside one installation; a developer who needs a real double-entry core with tax rules as data rather than as code; and

... View full README on GitHub