Cal.com · Rate Limits

Cal Com Rate Limits

Cal.com API v2 returns 429 with a Retry-After header when rate-limit ceilings are exceeded. Limits are scoped per API key (or per OAuth client on Platform) and are not consistently published as exact per-second numbers. Self-hosted instances have no platform-imposed rate limit beyond the operator's infrastructure.

Cal Com Rate Limits is the machine-readable rate-limit profile for Cal.com on the APIs.io network, in the API Commons Rate Limits shape.

It captures 3 rate-limit definitions, measuring request and none.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 3 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Productivity, Scheduling, Calendar, Open Source, and Booking.

3 Limits Exhausted: HTTP 429
Method: generated, dated 2026-05-08.
Written by API Evangelist on 2026-05-08 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
ProductivitySchedulingCalendarOpen SourceBookingRate LimitingQuotasThrottling

Limits

Cloud API Key api_key
request · per-minute
published per-key
Per-key request rate; honor Retry-After on 429.
Platform OAuth Client oauth_client
request · per-minute
published per-client
Platform managed-user OAuth clients have their own ceilings; raised by contract.
Self-Hosted instance
none
-1
No platform-imposed limits when self-hosted; bounded by operator infrastructure.

Policies

Backoff Strategy
Exponential backoff with jitter on 429; honor Retry-After header.
Use Webhooks Not Polling
Subscribe to BOOKING_* events instead of polling the bookings endpoint.
Reserve Slots Before Confirmation
Use the Slots API to reserve a slot during the booking flow rather than re-querying availability multiple times.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

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This rate limit 
curl "https://apis.io/api/v1/rate-limits/cal-com-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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