Readandwriteeventdatainreal-time
Launch 104+ pre-built Calendar integrations today and access normalized event data with zero maintenance — all through a unified API.

One request. Every calendar.
Swap the connection_id and the same code reads events from Google Calendar, Microsoft Outlook, Calendly or any of 104 calendar integrations, in one normalized shape. Every call is live against the source API.
curl --get \
'https://api.unified.to/calendar/{connection_id}/event' \
--data 'limit=1' \
--header "authorization: bearer $UNIFIED_API_KEY"[
{
"id": "7g2kq1o9b0v8m3n4p5r6s7t8u9",
"created_at": "2026-10-19T10:14:03.000Z",
"updated_at": "2026-10-22T16:40:51.000Z",
"calendar_id": "primary",
"subject": "Quarterly business review",
"start_at": "2026-10-28T14:00:00.000Z",
"end_at": "2026-10-28T15:00:00.000Z",
"timezone": "America/New_York",
"is_all_day": false,
"status": "CONFIRMED",
"organizer": { "name": "Mary Jones", "email": "mary@foobar.com" },
"attendees": [
{
"name": "Daniel Kim",
"email": "daniel.kim@foobar.com",
"status": "ACCEPTED"
}
],
"has_conference": true
}
]No credit card required. Get your API key, connect real accounts, and make live calls like this one in minutes.
The modern Unified API+MCP platform, built differently
Real-time, pass-through
Every request hits the source API live. No caching or sync jobs: reads and writes go to the source API, and native and virtual webhooks report changes on supported integrations.
No customer records at rest
No customer records at rest; connection credentials and operational metadata are encrypted at rest. Each workspace runs in one region: US on every plan, EU or AU on Pro and Scale.
Common objects across every category
Unified objects, endpoints, scopes and errors across every category, plus raw payloads when you need vendor-specific fields.
Custom fields & objects
Read and write custom fields through the Metadata API; reach custom objects through raw fields and the Passthrough API.
AI-ready integrations
Built for AI products: Unified MCP gives LLMs scoped access to integration tools, with options to limit permissions and hide sensitive fields.
Predictable pricing, no lock-in
Usage-based pricing that scales with API volume, not with the number of customers you connect. Own your credentials and export them anytime; tokens issued to your own OAuth app keep refreshing after you leave.
Get integrations from backlog to production in days
1. Activate integrations
Enable integrations across 38 API categories, from Generative AI to Calendar and Verification

2. Launch integrations
Build, test, and launch multiple integrations simultaneously with only a few lines of code.

3. Authorize integrations
Embed our authorization component to let customers easily link their accounts.

Authorization handled for you
A pre-built authorization component and API handle each vendor's sign-in, so your code works with a connection ID.
See documentationBusiness Login
Sign users in with the software their company already runs on. Redirect them to one Unified URL and get back their verified email and name. No OAuth flows to build, no tokens to store.
Built on OpenID Connect (OIDC), OAuth2, and SAML specifications.
Unified supports 323+ sign-in integrations.
Trusted by developers and product teams worldwide










Seamless Scheduling, no extra work
Unified.to removes the complexity of scheduling meetings in your application, so you can focus on building your product, not managing scheduling.
Just use our pre-built VueJS or React components, and we will handle the rest. Using our Unified Calendar API to fetch FreeBusy times and to schedule meetings is a breeze, so you don't have to build your own scheduling solution.
See example
Fresh data to fuel countless use cases
Power AI copilots, insights, predictive analysis, and automation with a modern integration infrastructure that scales alongside you.
Schedule appointments
Use pre-built components or the FreeBusy API to schedule meetings.
Train AI models on meeting transcripts
Use our Recording object from the Unified Calendar API to get detailed meeting transcripts.
Display Calendar Events
Use our Unified Calendar API to fetch the user's calendar events.
Check Availability
Access free/busy availability across calendar platforms.
Build with a unified Calendar API
Read and write data from multiple Calendar integrations
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