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  1. Home
  3. User guide
  5. Settings
  7. API

API

Overview

Open Settings → API to connect outside services to your workspace. Right now you will see two cards: Apple Calendar (for your personal appointment sync) and Peppol (Peppyrus) (for electronic invoices at company level).

This is not where you connect Stripe payments or your email mailbox: those live under Payments and Emails.

Apple Calendar

Use this if you want bookings from Pages → Appointments to land on your Apple calendar.

Click Connect, enter your Apple ID email, and paste an app-specific password from appleid.apple.com, never your normal Apple password. The app checks the details, then asks you to pick which calendar to use.

After connecting, the card shows Connected and the calendar name. Use Calendar to change your pick, or the trash icon to disconnect. If no calendar is chosen yet, the card warns you until you select one.

Peppol (Peppyrus)

Peppol is a European network for sending invoices electronically between businesses. Instead of emailing a PDF, you send structured invoice data that the recipient’s accounting software can read directly. From 2026, this is required for business-to-business invoicing in Belgium.

Peppyrus is the service that connects your Okinta account to Peppol. Create a free account at customer.peppyrus.be, copy your API key from there, then click Connect on the Peppol card and paste it in.

Once connected, you can send invoices and credit notes electronically from Finances, and import supplier invoices directly into Expenses using the Sync Peppol button.

Keeping connections safe

If someone leaves your team or a key may have leaked, revoke the old Peppyrus key or Apple app password at the provider, then connect again here with a new one.

Never share these keys in chat, email, or public places.

Note
Apple Calendar is linked to your personal user account. Peppol is linked to the whole company, who can change it depends on your role.

These actions open inside Okinta in a new tab. Sign up or log in to use them.

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