## What integrations and the API make possible Integrations connect Lucanto to the tools you already use. Instead of retyping, the invoice is triggered by your own system — an online shop, an internal app, a script. Through the REST API you issue an invoice from your own environment, keep clients in sync and pull documents along with their status. Invoicing becomes part of your workflow rather than a separate step. What the API does in practice: - **Issue an invoice from your own system.** Turn a shop order into an invoice without typing anything by hand. - **Keep clients in sync.** Hold the same contacts and company details in Lucanto and in your app. - **See your documents.** Pull invoices, their status and whatever else you need in your own system. Endpoints, formats and credentials change over time and differ by plan, so we keep them in the documentation inside the app. If you are not sure what your case needs, use the [contact form](/contact) and we will help you connect. ## The REST API is on the Free plan already The REST API is not reserved for large companies. In Lucanto it is available on the Free plan, with 100 requests a month — enough to try an integration and run a small flow of invoices. When you need a higher limit, you raise it by moving to a paid plan. Exact limits and prices are in the [pricing and plans overview](/pricing); all prices exclude VAT. ## Integrations and API by plan The API request limit grows with the plan — from 100 a month on Free to 20,000 on Business. Technical support for the API is available from Starter upwards. The table below shows what you get for integrations on each plan. Add-on prices exclude VAT.

## Export to accounting and connecting your bank Integrations do not stop at invoices. On PRO and Business you switch on **automatic export to accounting**, so documents reach your accountant without attachments going back and forth. Accounting records generally have to be kept for a number of years, and on PRO and Business they sit in the digital archive for that whole time, so you can always go back to them. ### Bank connection (PSD2) On PRO and Business you connect a bank account via PSD2 and create payment orders straight from Lucanto. Automatic bank transaction sync is still in progress. ## Automatic look-up from public registers (SK, CZ) The most useful integration is the one you never have to configure. Enter a company name or registration number and Lucanto fills in the address and the rest of the client's details from the public registers of Slovakia and Czechia, and shows immediately whether that client is VAT-registered. It works on every plan including Free, and saves you both the retyping and the typos. You can see it at work on the [free invoicing](/free-invoicing) page. ## AI agents, and what else is coming **MCP** — how you connect Lucanto to AI agents such as Claude or ChatGPT — is already available on every plan. What that means in practice, and what you can ask for, is on the [AI agents](/agents) page. We are still working on some other integrations: automatic bank transaction sync, and e-invoices in the European Peppol format. Until those are finished we mark them "in progress" — until then, count only on what is available today. How we treat the data flowing through the API is covered on the [data security](/data-security) page.