Google Calendar
via OAuth 2.0 · gated on verification
Real-time free/busy sync. Auto-create the booking event on the user's calendar.
Integrations · the protocols we speak
Slotsy speaks the same protocols
your stack already does.
No proprietary lock-in. iCal for calendars, HMAC-signed webhooks for automation, a single restricted Stripe key for payments. The boring choice on purpose — boring is interoperable.
CALENDAR
Calendars
Apple Calendar
via iCal feed URL · RFC 5545
Paste the public-feed URL from iCloud. No OAuth, no verification, no waiting on Google.
Outlook / Microsoft 365
via iCal feed URL today · native OAuth in v1.1
Works at v1 via iCal feed export from Outlook Web. Native Microsoft Graph OAuth ships in v1.1.
Fastmail · Proton · Any iCal
via iCal feed URL
Anything that exports an RFC 5545 feed will work. We don't gate the calendar by brand.
PAYMENT
Payments
Stripe
via Restricted API key · BYO
Paste a restricted Stripe key. Member payments go straight to your account. We never sit in the path.
AUTOMATION
Automation
Zapier
via HMAC-signed webhooks
Booking · reschedule · cancel · no-show events. Drop the URL, set the secret, done.
Make
via HMAC-signed webhooks
Same webhook stream as Zapier. Build the scenarios you actually want.
n8n
via HMAC-signed webhooks · self-hosted ok
Self-hosted automation works the same way. The signature header is documented at /docs#webhooks.
WEB BUILDER
Web builders
Webflow
via <script> embed · under 12 KB
One script tag. Inherits your Webflow typography. No iframe ceremony.
Framer
via <script> embed · under 12 KB
Code-component-friendly. Drop it into any Framer page; styles cascade from your design system.
WordPress · Carrd · others
via <script> embed
Same script tag works in any page builder that allows raw HTML embeds.
DON'T SEE YOURS?
If it speaks iCal or accepts webhooks, it works.
Slotsy doesn't keep an integration catalog the way some tools do — there's no "Zapier required" tier, no per-integration fees. If your tool exports an iCal feed or has a webhook endpoint, the wire is already in place.
Ask about a specific tool