For Claude, ChatGPT and others
Tell your assistant what needs to go out. One yes, and it’s done.
Connect your own AI assistant to Zirko, such as Claude or ChatGPT — over MCP, the common language such assistants use to work with other programs. It looks things up and creates drafts; it issues, sends, sends reminders or cancels only after you say yes.
Zirko itself uses no AI. You choose your assistant and pay for it with its provider.
According to Anthropic, this works with Claude on every plan, including the free one; according to OpenAI, with ChatGPT currently in Business, Enterprise and Edu, in the browser. As of 11/10/2026.
- You
Send out the invoice for the plumbing job.
- Your assistant
Here are the details from Zirko:
Invoice — plumbing upgrade
- Number
- INV-00105
- Recipient
- Rathmines Lower Properties Ltd
- Amount payable
- EUR 2,471.88
Shall I send it?
- You
Yes.
- Your assistant
It’s sent.
- Sending
- Sent
How it looks
One sentence instead of an hour at the desk
The invoice needs to go out, and you are still on site: you tell your assistant “Send Smith the invoice”. It shows you the document, number, amount and recipient from Zirko, you say yes, and Zirko sends it.
In detail — One sentence instead of an hour at the desk
With the same checks as at the desk and an entry in the log — then you are done for the day.
What it does for you — and what it never does
It has exactly your permissions and those of your package: whatever you may not see or do in Zirko, it does not see or do either.
Look up
- Which invoices are open, and how much is that in total?
- What was the revenue last month?
Which invoices are open, overdue or have had a reminder, added up in your currency — as under “Money outstanding”. Revenue, invoiced and received, as under “Revenue this month”: revenue, not profit. Plus customers, projects, items, documents, hours and job costing.
Create and change
- Create a quote for Smith.
- Book two hours on the plumbing job for me today.
Drafts of quotes, invoices and every other document, with line items and prices from your master data; while it is still a draft, it changes, removes and reorders line items. Plus customers, projects, hours, absences such as leave, items, assignments, reports and project messages — and settings such as payment terms or opening and closing texts, as far as your role may change them. If you only give a duration for a time entry, it asks back: from when to when. Zirko stores the start and the end.
After your yes
- Tell me first what’s on the invoice.
- Send Smith the invoice.
It issues, sends, sends reminders and cancels only after your yes — and the same goes for inviting or deactivating an employee, changing their role and changing details that appear on your documents, such as your bank details. The same checks apply as in Zirko. It reads net, tax and gross from Zirko: Zirko worked them out, not the assistant.
Never
Record payments; delete anything — no customers, projects, documents, hours or assignments, not even a whole draft, only single line items in it; manage the subscription; allow or switch off AI assistants; see or store login details, such as those of your mailbox or the key of your phone service; open files — photos, document files, attachments.
How to connect it
Three steps, once. After that it works until you disconnect it.
An admin allows it
It is off by default. An Office – Admin turns on the “Allow AI assistants” switch in the settings under “AI assistants”.
You add Zirko
In your assistant, you add Zirko as a new connection. The app asks for the address of the MCP server — this is it:
https://app.zirko.io/api/mcpYou give your consent
You sign in to Zirko, see what it may do and what it never does, and tap “Connect”. From then on it works with your permissions.
Step by step in your app
Claude
In the browser and in the Claude app on your computer, then on your phone too — on every Claude plan.Connect Zirko to ClaudeChatGPT
On the Business, Enterprise and Edu plans, in the browser — set up through developer mode.Connect Zirko to ChatGPTCursor
For people who write software: one entry in a Cursor settings file.Connect Zirko to Cursor
This works with any assistant in which you can add your own connection over MCP, with sign-in — according to their makers, for example with Claude, ChatGPT, Cursor and Vibe (Mistral AI).
According to Anthropic, this works with Claude on every plan, including the free one; according to OpenAI, with ChatGPT currently in Business, Enterprise and Edu, in the browser. As of 11/10/2026.
Claude is a trademark of Anthropic, ChatGPT a trademark of OpenAI; the other names mentioned are trademarks of their owners. Zirko is an independent offering and is not offered, sponsored or endorsed by any of these providers.
What protects you
Enforced in the database, not just in the interface.
Your permissions, no more
It works with exactly the permissions of the person who connects it. Through their assistant, a field worker sees only what they see in the Zirko App.
Anything final only after your yes
Before it issues, sends, sends a reminder or cancels, Zirko gives it the document, customer, amount and recipient. Nothing is carried out until it passes on your yes to exactly these details; if anything has changed, Zirko turns it down. If your app can show a confirmation window, Zirko asks you there itself.
At most 20 an hour
Zirko does not accept more final actions through an assistant per person and hour — a brake in case a hidden instruction, for example in an email, gets your assistant to confirm by itself.
Every change in the log
Everything an assistant creates, changes or makes final is listed in the settings for 90 days, with person, assistant and time. Your overview also shows you what it has done.
Disconnecting takes effect at once
With “Disconnect” in Zirko, it is out: Zirko turns down every further request. Whatever it created stays.
The switch is with the admin
If an Office – Admin switches AI assistants off for the business, no assistant in the business gets through from then on — also at once.
What else it takes off your hands
Book hours, create a quote
Each person in the business connects their own assistant, with the permissions they have in Zirko. A field worker says “Book two hours on the plumbing job for me today”, the office “Create a quote for Smith”.
In detail — Book hours, create a quote
Zirko stores every time entry with a start and an end; if you only give a duration, your assistant asks back: from when to when. Line items and prices come from your own master data, and you check the draft before it goes out. Anything that is not final needs no separate confirmation.
Zirko works out the figures, not the assistant
If you ask about open invoices or last month’s revenue, your assistant reads the figures Zirko has worked out — as on your overview. Net, tax and gross on an invoice also arrive from Zirko already calculated.
In detail — Zirko works out the figures, not the assistant
Revenue is not profit, though: what is left over on a job is shown by job costing, from the Team package up. How far it can see is decided by your permissions.
No signal, no assistant — and no AI from Zirko
Your assistant works over the internet; in a dead spot it does not answer, and your hours in the Zirko App then wait on the device as always. Zirko itself uses no AI: you choose and pay for the assistant with its provider, and whatever it reads from Zirko is processed by that provider under your contract with them.
Tax, trades and guides — Ireland
This page exists in its own version for every country. Tax rates and trade names come from the same tables the app works with.
Tax on the invoice
An invoice here carries VAT, at a standard rate of 23%. Zirko ships with the country's rates — you don't enter any yourself.
Zirko also carries: 13.5% · 9% · 4.8%.
- Net
- €10,000.00
- VAT 23%
- €2,300.00
- Gross
- €12,300.00
In Ireland, ordinary businesses will have to issue electronic invoices from 01/11/2028.
What the trades are called here
How businesses in this country name their own trade — where there is a page for it, the name leads there.
- Main contractor
- Brick and Stonelaying
- Internal Completions
- Carpentry and Joinery
- Electrical
- Floor and Wall Tiling
- Mechanical Elements
- Site (External) Finishes
- Sheet Metalworking
- Painting and Decorating
- Metal Fabrication
- Plastering
- Plumbing
From the guides for this country
- Safe Pass: how long it lasts, renewal, and the contractor's duty
- Relevant Contracts Tax: pay nothing before Revenue has been told
- The VAT limit in Ireland is €42,500, not €85,000
- Pro forma invoice: harmless until somebody pays it
- RCT invoice: €10,000 billed, €8,000 paid, no VAT
- The payment claim notice: five days that decide if you get paid
Frequently asked questions
Does Zirko use AI?
No. Zirko itself calls no language model. You connect your own assistant, such as Claude or ChatGPT, and whatever it reads from Zirko is processed by its provider under your contract with them. Without that connection, nothing goes to a model.
What does the connection cost?
Nothing extra in Zirko: it is included in every package. You pay for the assistant itself with its provider, at their prices.
Which assistants work?
Any assistant in which you can add your own connection over MCP, with sign-in — according to their makers, for example Claude, ChatGPT, Cursor and Vibe (Mistral AI). According to Anthropic, Claude allows this on every plan, on the free one with one connection of your own; in Team and Enterprise the owner of your company account sets it up. According to OpenAI, ChatGPT currently allows connections of your own that can also create things in Business, Enterprise and Edu, in the browser. As of 11/10/2026.
Can it issue or send an invoice without my yes?
Not without a yes that reaches Zirko. Before it issues, sends, sends a reminder or cancels, Zirko gives it the exact details; the action is only carried out with a second call for exactly these details, with the same checks as in Zirko. If your app can show its own confirmation window, Zirko asks you there itself. Otherwise your yes comes through your assistant, and a planted text, for example in an email, could get a model to confirm by itself. That is why Zirko accepts at most 20 such actions per person and hour and records each one in the log.
Does a field worker see more through their assistant than in the app?
No. An assistant works with exactly the permissions of the person who connected it. What a field worker does not see in the Zirko App, such as prices and invoices, their assistant does not see either. The database enforces the limit.
What happens to my data at the assistant’s provider?
Whatever your assistant retrieves from Zirko goes to its provider. Where the provider processes the data and whether it trains models with it is governed by your contract with them. Zirko does not evaluate what an assistant queries, trains no model and sends nothing on its own. Files such as photos and attachments are out of an assistant’s reach altogether.
How do I disconnect it again?
In Zirko, with “Disconnect”: in the office under Settings → AI assistants, in the Zirko App under Profile. It takes effect at once, and whatever it created stays. If an admin switches assistants off for the business, that applies to everyone, also at once.
Does the assistant work out the amounts itself?
No. Zirko works out net, tax and gross, the total of open invoices and revenue, just as on your overview and on the invoice. Your assistant reads these figures from Zirko and passes them on to you. Revenue is not profit, though — what is left over on a job is shown by job costing.
What else you can get done
Answering calls
Your AI phone service answers, Zirko creates the inquiry, and it reports emergencies at once.More on thisZirko Automation
Eleven fixed rules instead of a model — with a dry run and a log going back thirty days.More on thisIntegrations
Claude, ChatGPT and Cursor over MCP, Excel, CSV, vCard and a full export of all your data.More on this
Before you decide
Hosting
Database and files are held in Frankfurt am Main — including for businesses outside Europe.
How to get started once we launch
No data migration project, no sales call in between: at launch you sign up yourself and get going.
Try the preview
Zirko launches at the end of 2026. Until then you can try an early test version — sign up, confirm your address and you're in straight away. One more email at launch, nothing more.
Available from late 2026