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CalendarHero for AI agents

CalendarHero automates meeting scheduling, syncing with existing calendars so people can book, reschedule, and remind attendees without any email back-and-forth at all. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect CalendarHeroSee the 38 actions ↓
SchedulingAPI keyMCP + RESTcalendarhero.com
AUDIT LOG · CALENDARHEROPOLICY: acme-support
09:41:07 · claude · u_8f2read
calendarhero.list_meeting_types
List Meeting Types✓ allowed · 212ms
09:41:08 · claude · u_8f2read
calendarhero.get_webhook
Get Webhook Configuration✓ allowed · 164ms
09:41:09 · claude · u_8f2write
calendarhero.create_contact
Create Contact✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
calendarhero.delete_contact
Delete Contact✕ blocked · policy: deny
EVERY CALENDARHERO CALL, ON THE RECORD
01 · USE CASES

What agents do in CalendarHero.

01

Create a meeting request

Create a new meeting request from a template, ready to send to an invitee.

02

Look up a contact first

Look up a contact's stored details before scheduling a new meeting with them directly.

03

Confirm before deleting a meeting type

Confirm before deleting a meeting type, since any links already shared with it stop working.

02 · ACTIONS

38 CalendarHero actions, graded by risk.

Every CalendarHero action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

19

Look things up. Allowed by default.

  • calendarhero.get_webhook
    Get Webhook Configuration
  • calendarhero.search_contact
    Search Contact
  • calendarhero.get_user_savings
    Get User Savings
  • calendarhero.get_contact_count
    Get Contact Count
  • calendarhero.get_meeting_tasks
    Get Meeting Tasks
  • calendarhero.get_search_result
    Get Search Result
  • calendarhero.get_user_directory
    Get User Directory
  • calendarhero.get_webhook_sample
    Get Webhook Sample
  • calendarhero.list_meeting_types
    List Meeting Types
  • calendarhero.list_user_calendars
    List User Calendars
  • calendarhero.search_integrations
    Search Integrations
  • calendarhero.get_assistant_message
    Get Assistant Message
  • calendarhero.get_user_organization
    Get User Organization
  • calendarhero.list_user_directories
    List User Directories
  • calendarhero.get_meeting_categories
    Get Meeting Categories
  • calendarhero.list_meeting_templates
    List Meeting Templates
+ 3 MORE

write

14

Create and change things. Allow, or ask the user first.

  • calendarhero.update_user
    Update User
  • calendarhero.send_reminder
    Send Reminder
  • calendarhero.create_contact
    Create Contact
  • calendarhero.create_webhook
    Create Webhook
  • calendarhero.update_contact
    Update Contact
  • calendarhero.update_user_info
    Update User Info
  • calendarhero.update_user_address
    Update User Address
  • calendarhero.update_meeting_types
    Update Meeting Types
  • calendarhero.update_work_location
    Update Work Location
  • calendarhero.update_user_directory
    Update User Directory
  • calendarhero.send_assistant_message
    Send Assistant Message
  • calendarhero.update_restricted_apps
    Update Restricted Apps
  • calendarhero.add_calendar_connection
    Add Calendar Connection
  • calendarhero.create_meeting_request_v2
    Create Meeting Request V2

destructive

5

Delete, cancel or archive. Ask first, or deny outright.

  • calendarhero.delete_contact
    Delete Contact
  • calendarhero.delete_webhook
    Delete Webhook
  • calendarhero.delete_meeting_task
    Delete Meeting Task
  • calendarhero.delete_meeting_type
    Delete Meeting Type
  • calendarhero.delete_user_directory
    Delete User Directory
03 · HOW IT WORKS

CalendarHero in three steps.

  1. 01Your users connect CalendarHeroThey add their CalendarHero api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create Contact” can wait for the user, and “delete Contact” can be denied outright.
  3. 03Any agent can actYour agent calls CalendarHero through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('calendarhero', {
  read: 'allow',
  write: 'ask',        // create_contact
  destructive: 'deny',  // delete_contact
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How CalendarHero connects.

Users add their CalendarHero api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same CalendarHero connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use CalendarHero from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More scheduling apps.

Google Calendar50 actionsCalendly57 actionsApaleo29 actionsCal175 actionsBookingmood142 actionsEventbrite95 actionsEtermin78 actionsTicket Tailor77 actions
ALL SCHEDULING APPS →
07 · FAQ

CalendarHero and Arc0, answered.

Q01

Can I use CalendarHero with Claude, ChatGPT or Cursor?

Yes. Connect CalendarHero to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the CalendarHero actions you allow.

Q02

How do users connect CalendarHero?

Users add their CalendarHero api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which CalendarHero actions can my agent take?

38 in total: 19 read, 14 write and 5 destructive, such as “create Contact”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in CalendarHero?

Yes. Actions like “delete Contact” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call CalendarHero too?

Yes. The same CalendarHero connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug CalendarHero into your agent.

Your users connect CalendarHero once, under your brand. Your agent gets 38 actions behind your policies, with every call on the record.

Connect CalendarHeroBrowse all apps →

Free to build · MCP + REST · Audit log on every plan