Scheduling & Booking · Integration
Calendly
Add Calendly to your product for your customers, and give your AI agents governed access to it.
Embed a Calendly integration so your customers can schedule and manage meetings from inside your product, working their own event types, scheduled events, invitees, and availability. Each customer connects their own Calendly account, so booking links and availability are theirs rather than proxied through a shared account, and event types and custom questions are mapped per tenant as configuration. fastn handles per-customer OAuth and API upkeep, so a new booking setup does not need code from you.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let customers surface their own Calendly event types and booking links inside your product.
Read scheduled events and invitee details so meetings appear against the right record in your app.
Read availability so your product can show open slots without sending users elsewhere.
Trigger your product when a meeting is booked, rescheduled, or cancelled.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent checks a rep's availability before proposing times to a customer.
An agent cancels or reschedules a scheduled event within governed permissions.
An agent reacts to a new booking and prepares a brief for the meeting owner.
Example prompt
List meetings booked for next week and flag any invitee who has not answered the qualifying question.
Set up Calendly in 4 steps
- 01Open the Calendly connector from your fastn dashboard.
- 02Have each customer authenticate their Calendly account with OAuth.
- 03Map the event types and invitee questions your product uses, then enable actions and triggers.
- 04Call them from your product, or expose them to an agent through the MCP server.
Why teams use the Calendly integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Calendly integration without building it. Your customers connect their own Calendly account inside your product and work their bookings, events and availability there, with no per-customer code on your side.
- Handle the part that actually costs time: availability is only true at the moment you read it, so a stale free/busy picture becomes a double booking somebody has to apologise for. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Calendly update is not your on-call problem.
- One integration serves your product and your agents. The same governed Calendly connection powers in-product features and gives AI agents scoped, audited access, so you let people book and reschedule without leaving your product without wiring it twice.
Used by these teams
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GongCalendly integration FAQ
How do I add a Calendly integration to my product?
Enable the Calendly connector in your fastn dashboard, then let each customer authenticate their own Calendly account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Calendly client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Calendly account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Calendly account and only ever sees their own bookings, events and availability. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this Calendly integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent checks a rep's availability before proposing times to a customer.
Who maintains the Calendly integration?
fastn does. When Calendly changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Can my product create, reschedule or cancel bookings in Calendly automatically?
Yes, in each customer's own account. Your product reads live availability, places a booking, moves it or cancels it, and reacts when someone books or cancels on the other side.
Does it respect each team's own availability rules in Calendly?
Yes. Working hours, buffers, lead times, resource capacity and routing rules are configured per customer and mapped rather than hard-coded, so an unusual setup works without code from you.
What can I build with the Calendly integration?
A common starting point: surface their own Calendly event types and booking links inside your product. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the Calendly integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Calendly does not change your per-connector cost. You can start free with 3 connected accounts.
Add Calendly to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.