Backbone for startups

Focus on building. Let Backbone handle the boring stuff.

Backbone writes the invoices, chases the late ones, matches the receipts and hands your bookkeeper one tidy file. From the first invoice to the first hires, in one workspace. You get back to building.

Start free trialSee the five challenges

Solo from €19 per month. 7 days free, card required. €0.00 due today.

  1. Copy hours from a spreadsheet into an invoice.Your tracked hours turn into invoice lines at the client's rate, in a few clicks.
  2. Look up what an invoice has to show.Every invoice is checked for Austria and Germany as you write, with a one-click fix.
  3. Chase the client who still hasn't paid.Overdue invoices are flagged, and the reminder is written from the invoice in your wording.
  4. Dig through your inbox for receipts.Drop in photos and PDFs, and each receipt is matched to its payment on your bank statement.
  5. Rename and zip every PDF for the bookkeeper.One ZIP at month end with invoices, receipts and statements, named the same way every time.
  6. Add up everyone's hours on a Friday.One timesheet for the whole team, next to each person's weekly target.

Ease of mind. Always. Get some rest.

Five challenges, one workspace

Every startup hits these. We take them off your plate.

Challenge 01 · Invoices by the book

Invoicing law without the homework.

  • Checked as you write. Backbone names what an invoice in Austria or Germany is missing, with a fix. It warns, it never blocks.
  • Set up once. Address, VAT number and bank details go into settings; every invoice and quote uses them.
  • Numbers handled. The next number in the series, every time. Mistakes get a credit note and a corrected copy.
Invoices & quotes

Challenge 02 · Month end

Month end without the shoebox.

  • Receipts find their payment. Drop in photos and PDFs. Sure matches are made against your statement; unsure ones wait for your yes.
  • Statements in, months covered. Upload the statement your bank gives you, as PDF or CSV, and see which months are covered. Connecting your bank accounts Coming soon
  • Gaps show up early. A payment without a receipt is marked missing, so you know what to look for before the month closes.
  • One file for your bookkeeper. A ZIP with invoices, receipts and statements at month end. Or a login of their own.
Receipts & matching

Challenge 03 · First hires

First hire. Track the billables.

  • A role for everyone. Owner, Admin, Member or Bookkeeper. You decide who sees rates and the team's numbers.
  • Everyone tracks time. A timer in the top bar, a line by hand, or just tell your AI tool. Every entry lands on a client and a project.
  • One timesheet. Switch to Team and see who booked what, next to each person's weekly target.
  • Billables become invoice lines. Add hours from Time, tick them, and the lines appear at the client's rate.
Time tracking

Challenge 04 · Getting paid

Getting paid. Just a bit faster.

  • Know who owes you. Overdue invoices stand out, with what is open per client. No spreadsheet to keep.
  • Reminders in your wording. A reminder or a notice straight from the invoice. Ask Billy and he drafts it; he asks before anything is sent.
  • Hours never slip through. Billy tells you which hours aren't invoiced yet, so nothing is left on the table at month end.
Dunning
BillyYour workspace

Who hasn't paid yet, and how many hours are not invoiced?

  • Overdue RE-2026-0118 · Nordlicht GmbH · €4,280.00 · RE-2026-0117 · Fernweh Reisen · €1,178.00
  • Not invoiced 12.50 h

Shall I send a reminder for both invoices?

Ask Billy

Challenge 05 · The AI way of working

Work where you already work.

  • Just ask Billy. Our friendly AI ghost lives in Backbone. Ask in plain words and he drafts the invoice, the reminder or the month-end list. He asks before anything is sent.
  • Or stay in your own AI. Claude, ChatGPT, Gemini and Grok reach your workspace through the AI Connector (MCP). Sign in once, then ask. No tab switching, no copy and paste.
  • Almost everything, one ask away. Billy and the AI Connector can do almost everything you can do in the app: invoices, clients, time, reminders, receipts and reports.
  • Right in your editor. One command adds Backbone to Claude Code. Check who owes you or draft the invoice between two commits.

AI Connector & MCPMeet Billy

ClaudeBackbone connector

Who still owes me money? Send Lumen a friendly reminder.

  • Backbone · Overdue 2 invoices · €3,120.00
  • Backbone · Reminder draft RE-2026-0105 · Lumen Kosmetik · €1,240.00

Two invoices are overdue: Lumen Kosmetik (€1,240.00, 18 days) and Nordlicht GmbH (€1,880.00, 6 days). I've drafted a friendly reminder for Lumen — send it now?

Works in

  • Claude
  • ChatGPT
  • Gemini
  • Grok
  • Claude Code
  • Cursor

In Claude Code

claude mcp add --transport http backbone https://back-bone.io/api/mcp

Everything you need from day one

Everything included in Backbone

Checked for Austria and Germany. Mandatory details named as you write.

A bookkeeper login. One per workspace, without using a paid seat.

Roles from the start. Owner, Admin, Member, Bookkeeper.

Questions founders ask.

If your startup writes invoices, collects receipts and works with a bookkeeper or tax advisor, yes. Backbone covers time, invoices and quotes, reminders, receipts, bank statements and the export for your bookkeeper, in one workspace.

Start on Solo. When the first people join, move up to Studio for a small team, and to Agency when the whole company works in Backbone. Your clients, invoices and receipts stay where they are.

Every person gets a role: Owner, Admin, Member or Bookkeeper. Members work on their own hours and receipts; you decide who sees rates and the team's numbers.

No. One bookkeeper per workspace gets their own login without using up a paid seat. They can read everything and work on bookkeeping and exports, but cannot change sales documents or settings.

Yes, through the AI Connector & MCP: Claude, ChatGPT, Claude Code, Cursor and other MCP clients sign in once with OAuth and use the same functions as the app. A public API is coming soon.

No. Backbone checks the mandatory details for Austria and Germany as you write and names what is missing. Tax questions, such as whether the small-business exemption applies to you, are for your tax advisor.

Yes: 7 days, with a card on file. €0.00 is due today, and you can cancel any time.

Go build. We've got the back office.

Start free trialSee pricing

Solo €19, Studio €29, Agency €49 per month. 7 days free, card required. €0.00 due today.

Backbone for …