Cal.com website screenshot

Cal.com

Open-source scheduling infrastructure with a public REST API for managing calendars, event types, bookings, teams, and availability, self-hostable or available as Cal.com Cloud.

Cal.com publishes 1 API on the APIs.io network. Tagged areas include Scheduling, Calendars, Bookings, Open Source, and Event Types.

Cal.com’s developer surface includes documentation, pricing, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
24.0/100 emerging ▲ 9.5 Agent 19/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
1 APIs
SchedulingCalendarsBookingsOpen SourceEvent Types

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 24.0/100 · emerging
Contract Quality 10.8 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 3.7 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 6.7 / 10
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/calcom: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Cal.com REST API v2

REST API providing full programmatic control over Cal.com resources including calendars, event types, bookings, schedules, teams, and organizations. Supports OAuth and API key a...

GraphQL 1

GraphQL schemas published by this provider.

Cal.com GraphQL API

Cal.com does not expose a native GraphQL endpoint. The platform's public-facing API is a REST API (v2, hosted at `https://api.cal.com/v2`), and its internal application layer us...

GRAPHQL

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Calcom Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Calcom Vulnerability Disclosure

security.txt · contact published

SECURITY

Calcom Trust Center

SOC 2, ISO 27001, HIPAA, GDPR

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Website
Website
 LinkedIn
LinkedIn
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: calcom
name: Cal.com
description: Open-source scheduling infrastructure with a public REST API for managing calendars, event types, bookings, teams,
  and availability, self-hostable or available as Cal.com Cloud.
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/calcom.png
url: https://cal.com
baseURL: https://api.cal.com/v2
created: 2026-06-14
modified: 2026-06-14
specificationVersion: '0.19'
tags:
- Scheduling
- Calendars
- Bookings
- Open Source
- Event Types
apis:
- aid: calcom:rest-api-v2
  name: Cal.com REST API v2
  description: REST API providing full programmatic control over Cal.com resources including calendars, event types, bookings,
    schedules, teams, and organizations. Supports OAuth and API key authentication with rate limits starting at 120 requests
    per minute.
  tags:
  - Scheduling
  - Bookings
  - Calendars
  - Event Types
  - Teams
  humanURL: https://cal.com/docs/api-reference/v2/introduction
  baseURL: https://api.cal.com/v2
  properties:
  - url: https://cal.com/docs/api-reference/v2/introduction
    type: Documentation
common:
- type: TrustCenter
  url: security/calcom-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/calcom-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/calcom-domain-security.yml
- url: https://cal.com
  type: Website
- url: https://cal.com/docs
  type: Documentation
- url: https://www.linkedin.com/company/cal-com
  type: LinkedIn
- url: https://github.com/calcom
  type: GitHubOrganization
- url: https://cal.com/pricing
  type: Pricing
- url: plans/calcom-plans.md
  type: Plans
- url: rate-limits/calcom-rate-limits.md
  type: RateLimits
- url: finops/calcom-finops.md
  type: FinOps
- url: https://cal.com/blog/category/all-categories
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com