Build with calsync

calsync is headless: manage calendars, events and feeds entirely through the REST API and the MCP server. Your subscribers keep using the same one-tap ICS links.

Let an agent manage your calendars

Point Claude, Cursor or any MCP client at calsync. It can create calendars, add events, and read your ICS feed without you touching the dashboard.

Connect an agent

Publish schedules from code

Script your content workflow. Create events from a CSV, CMS, or a nightly cron job — the ICS feeds your subscribers use update automatically.

REST API reference

Scope keys to teams and orgs

Issue scoped API keys per app or organization. Usage bills to the org's plan and shows up in your billing dashboard.

Manage API keys

Real-world example

Your website, CMS, or an AI agent posts events to the API. The ICS feed — the same one fans subscribe to — rebuilds automatically, so the change lands on their devices with no manual work.

Node.js / fetch

const key = process.env.calsync_API_KEY; // cs_live_…
const res = await fetch("https://calsync.cc/api/v1/events", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    Authorization: `Bearer ${key}`,
  },
  body: JSON.stringify({
    calendarId: "your-calendar-id",
    title: "Live stream: Season 2 premiere",
    startDate: "2026-10-01T19:00:00Z",
    endDate: "2026-10-01T20:30:00Z",
  }),
});
// Subscribers' calendars update instantly.