twennyfour

>No API? No problem.

Twennyfour automates the software everyone else gave up on — QuickBooks Desktop, Sage 50, Citrix-hosted apps, old ERPs. A deterministic engine runs your workflow identically every single time, on your own machine. AI steps in only when the interface changes.

twennyfour engine — live run ●
$ twennyfour run ap_bill_entry
verify screen "Enter Bills" ····· OK
open Vendors ▸ Enter Bills
locate field "Vendor" ·········· OK
type "ACME FREIGHT CORP"
verify entry saved ············· OK
run #1,204 — identical to run #1
How it works

The engine doesn't guess. It learns, executes, and verifies.

01

Learn

The engine studies your application once and builds a private map of it. That map lives on your machine — it belongs to you, and it never leaves your premises.

02

Execute

Every run follows the exact same verified path, at the native speed of your machine. No screenshot sent to a cloud model before each click, no per-step AI cost, no surprises.

03

Verify

After every action, the engine visually confirms the expected result actually happened before moving on. When your software updates, the map is repaired once — then deterministic execution resumes.

Why it matters

Your books can't run on a coin flip.

Two generations of automation came before us. Both break — just in different ways.

Traditional RPA

Brittle by design

Tools like UiPath anchor to internal selectors that shatter on every software update — and can't see anything inside a Citrix or RDP session, where only pixels reach your screen. Maintenance never ends.

LLM computer-use agents

Impressive, but probabilistic

Cloud agents reason about a screenshot before every click — slow, costly per step, and never guaranteed to do the same thing twice. Great for demos. Not for payroll, invoices, or customs filings.

Twennyfour

Deterministic, local, verified

Once learned, your workflow executes the same way on run #1,000 as on run #1 — at native speed, on your machine, so your data never leaves the premises. AI is reserved for one job: repairing the map when the UI changes.

The vision

AI is the brain.
Twennyfour is the hands and the eyes.

We separate thinking from doing. A model may reason, hesitate, even change its mind — execution should never miss. Our engine gives AI a body that acts on any screen exactly as instructed, while you watch in real time and always keep the last word. It starts with business software. It doesn't end there.

Built for

The teams still typing data into software from another decade.

CPA & bookkeeping firmsQuickBooks Desktop · Sage 50

Bulk AP bill entry from vendor PDFs, client write-ups, month-end grunt work — automated directly inside QuickBooks Desktop Enterprise or Sage 50, including hosted sessions. No API exists for this software. We don't need one.

Freight forwarders & customs brokersTMS · ABI/ACE · legacy ERPs

Your team rekeys commercial invoices and packing lists into entry screens all day. The engine reads the documents and types them in — field by field, visually verified, with a full replay of every run for audit.

Citrix, RDP & virtual desktopsPixels are enough

When software is streamed to your screen, there is no DOM, no selectors, no integration surface — only pixels. That's exactly what the engine was built to see. If a human can operate it, Twennyfour can automate it.

Design partner program

Give us your team's most hated 30 minutes.

Send a screen recording of the daily task your team dreads most. Within 48 hours, you'll get back a video of the engine doing it — on a test file, no access to your data required. If it works, we build it with you, free, as a design partner.

Send us your task Or join the waitlist