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Calendar sync, AI scheduling and resource management for teams and companies

With Ridian, teams sync their calendars, run them with AI agents and book meeting rooms. Compliant by design.

Try it free →Start with WhatsApp

7-day free trial · No credit card required

Claude
Plan kickoff
Ridian · Check availability
Ridian · Create event

Reply …↑
Microsoft Teams
SalesGeneral · 8 members
Alvin
New message➤
Recent activity
Today

  • Marius Müller synced Google ↔ Outlook

  • ChatGPT tried to edit “1:1” blocked

  • Meeting Room Berlin booked for 10 am

  • Jonas Becker connected his calendar

Permissions
Lena HoffmannAgent access for ChatGPT
Work calendar only ⌄
  • Read calendar
  • Create events
  • Edit events
  • Delete events
  • Book rooms
Save permissions
Works with all
major providers
GoogleMicrosoftApple iCloudNextcloudGMXWEB.DEmailbox.orgkSuitePosteoStrato

What Ridian does for your team. Scheduling, room booking, calendar sync and more, right inside the agent your team already works with.

Your employees keep
in sync with every other calendar.
No more double bookings. Availability is visible to everyone, across every system.

Full control over what gets shared.

Within the rules your admins set, employees decide which details each system actually needs.

Busy onlyTitle & timeEverything
BusyClient meetingClient meeting · Meyer & Co.Thu 4:00 to 5:00 PMThu 4:00 to 5:00 PMThu 4:00 to 5:00 PM · Hafenstraße 12

Syncing calendars has never been easier.

Control everything in Ridian through Alvin, the Ridian agent, or through your own agent via MCP. Or connect calendars visually on the canvas.

Mirror Lena's Google to Outlook, busy only.↑
GoogleLena
OutlookTeam
Busy only

Your employees run their workday with .
Schedule meetings, book rooms, answer invites, handle tasks and email, right inside the agent they already use.

The compliant way to give agents calendar access.

Every agent is fully bound by the settings your admins define for employees.

ChatGPTfor all employees
Read calendar
Create events
Edit events
Delete events

Everything is traceable.

Detailed logs show every action. If an agent ever gets something wrong, you undo it in one click.

Moved “Weekly” to 2:00 PMClaude · Lena Hoffmann · 9:42 AMUndo
Created “Product line kickoff”Copilot · Jonas Becker · 9:17 AMUndo
Deleted “1:1 Tim”ChatGPT · Sara Klein · 8:55 AMUndoRestored

Your team schedules in
right in the shared chat.
Alvin finds time across the team, schedules meetings, books rooms, answers invites, creates tasks and sends email, all in chat.

Coming soon

Give
its own mailbox.
Your agent sends and answers email without access to your own mailbox. Built into your workflows, with your team working alongside.

Your agent gets its own inbox.

It receives and sends mail, reads attachments and pulls out the data. So it really acts for you, without access to anyone's personal mailbox.

Invoice agentOwn inbox
↓ReceivedDelivery note 5531 · Kraus LogisticsInvoice 8812 · Bürobedarf WeberInvoice 2291.pdf · Hoffmann Druck123
⌗Data extracted€1,240due Oct 21Order 4471
↑SentThanks to Hoffmann Druck✓
No access to personal mailboxes

Your domain, your sender.Soon

Connect your company domain and the agent writes as [email protected]. Ridian checks the DNS records for you.

Custom domainnorthwind.com
SPFDNS recordCheckingVerified
DKIMDNS recordCheckingVerified
DMARCDNS recordCheckingVerified
Sender[email protected]OffLive

Control at company level which data flows into your organization and which data may leave it.

Visibility, agent permissions and licenses for your entire team.

Start 7-day free trial →

No credit card required

Admin-managed sync and agent policies

Decide which calendars get connected, how much syncs share externally and what agents may read, create or change. Set exceptions per team or person right in user management.

Lena HoffmannSales · inherits team rule
Connect calendarsTeam
Visible externallyBusy onlyTeam
Share with externalsTitle & timeTeam: offOverride
Agents canRead, create, editTeam
Private eventsNever syncLocked

SSO and roles

Sign in with your company account via Microsoft Entra ID or Google Workspace. Roles define who can change policies, licenses and billing.

Sign-in
Microsoft Entra IDnorthwind.de · 46 peopleConnected
Google WorkspaceAdditional domainConnect
Roles
OwnerBilling and all rules1
AdminTeam rules and overrides3
MemberOwn calendars and agents42

Central license management

All licenses in one place. Add employees, reassign seats, switch between Professional and Basic. One invoice for the whole workspace.

Licenses46 / 50+40
Professional 38Basic 84 available
Next invoiceNov 1 · €552.00
PaymentVISA•••• 4242
One invoice for the whole workspace

A log of every agent action, email and sync

See which agent or sync changed what and when, which emails left which Agent Mailbox and which data was extracted. Undo faulty changes one by one or for an entire time range.

AllPeopleAgentsSyncsMailboxesRevert time range
Email sent from inbox “Invoice agent”To Hoffmann Druck · thanks for invoice 2291View
Data extracted from invoice 2291€1,240 · due Oct 21 · order 4471View
Room Berlin bookedLena Hoffmann · Tue 10 to 11 amUndo
“Weekly” moved to 2 pmClaude for Jonas BeckerUndo
Sync Google to Outlook12 events synced · Marius WeberUndo
Agent access granted to ChatGPTTim Schröder · AdminUndo

Up and running in four steps.

Set everything up in the console yourself, or describe your setup to your agent.

Made in Germany. Secure for teams worldwide.

GDPR compliant
Hosted in Europe
ISO 27001 certified partners
Modern encryption
No training on your data
DPA for Team & Enterprise
Go to Compliance Center →

Common
questions

Ask the Agent
Answers from the Ridian docs
Online

Or go straight to the docs →

Ridian keeps your team's calendars in sync across every provider and connects them to the AI agents you already work with. As an admin, you decide centrally what gets shared and what agents may do.

Google Calendar and Workspace, Microsoft 365 and Outlook, Apple iCloud and CalDAV providers such as Nextcloud, GMX, WEB.DE, mailbox.org, kSuite, Posteo and Strato. Sign-in and features vary by provider.

No. Accounts belong to the person, and workspace membership grants no access to private calendars. Private events show up in the work calendar as “busy” at most. Your policies can make sure they're never synced.

In your policies you decide which agents are allowed and whether they may read, create or change events. Set exceptions for individual teams or people. Every action is logged and can be undone.

Assistants with MCP support such as Claude or ChatGPT. They only see the calendars and actions you allow, and you can revoke access at any time.

With their company account via Microsoft Entra ID or Google Workspace. Roles define who can change policies, licenses and billing.

Every event has one original that leads. Copies in other calendars are derived from it and kept up to date. No endless loops, no conflicting versions.

The application, database and backups run in the EU region Ireland. You'll find the DPA for your team and details on sub-processors in the Compliance Center.

Try Ridian free for 7 days, no credit card required. After that, pricing depends on team size and license type. See our pricing page for current plans.

Coming soon

Build with diff0.
Unified scheduling infrastructure for your software.

Access Beta →

Ready for calendar sync and AI scheduling across your team?

Start 7-day free trial →

No credit card required