Open-source ERP. Agent first. MCP native.
TILL is an ERP an AI agent can run end to end. The MCP server is the interface, not a chat window bolted on. MIT licensed, your books in one local file, Swiss compliance built in.
Pre-alpha, built in the open. Source opens when the ledger is real.
Day one
What your agent does, in plain sentences
No workflow builder, no macro language. You tell it what happened; it works in the same ledger you do.
It posts the entries
Tell it what happened and it books it, against the Kontenrahmen KMU, in the same ledger you work in yourself.
It drafts the invoices
From a sentence to a QR-bill, held for your approval before anything goes out.
It prepares the MWST return
And shows you which entries every single figure came from.
You review and approve. Posted entries stay immutable: a correction is a reversing entry, never a silent edit. That holds for you and for the agent, and it is why you can trust an entry a machine made at all.
Why MCP native
Bolted on, or built in
Most vendors put a chat window on top of the GUI and call it AI. The difference shows the moment an agent actually has to do something.
Tool count: QuickBooks' official MCP server, as of July 2026. No Swiss or German-speaking SME accounting vendor has shipped an official MCP server at all.
Local first
Every path ends in one local file
The agent over MCP, you in the Studio, the bank statement in camt.053: every path writes to the same ledger, with the same provenance and the same audit trail.
Your books are a file you own, not a tenant in someone's cloud. Back it up, put it in git, hand it to your Treuhänder, leave any time. The MIT licence is the same promise about the code.
Go deeper
The three claims, argued properly
Built in the open
The build log records what got built, what broke, and what changed because of it. The running commentary lives on the channels.
Latest entry The site is live