Cron

Cron was a next-generation calendar application for professionals and teams, backed by Initialized Capital and later acquired by Notion, where it was rebranded and relaunched as Notion Calendar. The product offered a fast, keyboard-driven desktop and mobile calendar with multi-account scheduling, time-zone handling, team availability, and deep Notion workspace integration (calendar events linked to Notion pages and databases). Cron is an end-user consumer product and does not expose a public developer API, OpenAPI definition, SDKs, or developer portal; its public surface is a marketing site, a dated changelog (retired January 2024 at the Notion Calendar rebrand), a blog, and help documentation now hosted within Notion. This profile captures Cron's public identity and domain-security posture for the API Evangelist network.

Cron is profiled on the APIs.io network. Tagged areas include Company, Consumer, Calendar, Scheduling, and Productivity.

Cron’s developer surface includes documentation, engineering blog, changelog, signup flow, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

16.3/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

0 APIs

Company Consumer Calendar Scheduling Productivity Notion Calendaring

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 16.3/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.4 / 20

Access Clarity 6.8 / 20

Operational Transparency 2.1 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/cron: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: cron
name: Cron
description: Cron was a next-generation calendar application for professionals and teams, backed by Initialized Capital and
  later acquired by Notion, where it was rebranded and relaunched as Notion Calendar. The product offered a fast, keyboard-driven
  desktop and mobile calendar with multi-account scheduling, time-zone handling, team availability, and deep Notion workspace
  integration (calendar events linked to Notion pages and databases). Cron is an end-user consumer product and does not expose
  a public developer API, OpenAPI definition, SDKs, or developer portal; its public surface is a marketing site, a dated changelog
  (retired January 2024 at the Notion Calendar rebrand), a blog, and help documentation now hosted within Notion. This profile
  captures Cron's public identity and domain-security posture for the API Evangelist network.
url: https://raw.githubusercontent.com/api-evangelist/cron/refs/heads/main/apis.yml
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://calendar.cron.com/Cron-favicon-style1-31@2x.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- initialized-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Consumer
- Calendar
- Scheduling
- Productivity
- Notion
- Calendaring
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/cron-domain-security.yml
- type: Website
  url: https://cron.com/
- type: Documentation
  url: https://www.notion.so/help/category/notion-calendar
- type: Blog
  url: https://cron.com/blog
- type: ChangeLog
  url: https://cron.com/changelog
- type: ChangeLog
  name: Cron Changelog (captured)
  url: changelog/cron-changelog.yml
- type: SignUp
  url: https://calendar.notion.so/signup
- type: Login
  url: https://calendar.notion.so/login
- type: TermsOfService
  url: https://cron.com/terms
- type: PrivacyPolicy
  url: https://cron.com/privacy
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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