What you can do with the Chronock MCP server
Connect the Chronock MCP server to Claude or ChatGPT to find available times, use saved booking slot settings, prepare candidate time text, and inspect booking URLs and calendars.
The Chronock MCP server lets AI assistants such as Claude and ChatGPT use your Chronock scheduling data.
For example, you can ask an assistant to “find three 60-minute openings next week” or “format these candidate times so I can paste them into an email.” Instead of opening calendars, comparing events, and rewriting times by hand, you can handle more of the scheduling flow inside the conversation.
This article explains what the Chronock MCP server can do, how to add it to Claude or ChatGPT, and where it is useful.
What the Chronock MCP server can do
The Chronock MCP server is a connection point that lets AI assistants read Chronock scheduling context.
The first version focuses on these capabilities.
| Capability | Why it helps |
|---|---|
| Find available times | Generate meeting candidates across connected calendars |
| Find times from a booking slot | Use a saved slot’s participants, duration, buffers, time windows, and off calendars |
| Prepare candidate time text | Format available times for email or chat |
| Inspect connected calendars | Decide which calendars should count for availability |
| Inspect booking slots | Choose the right booking page or meeting type and use its booking URL |
| Inspect workspaces | Pick the right workspace when you manage multiple teams or businesses |
The goal is not to replace Chronock booking pages.
When a booking page is the right experience, you can still send a booking page. When you want to propose candidate times in text or check availability inside an AI assistant, the MCP server gives you another entry point.
How to add the MCP server
To use the Chronock MCP server, you need a Chronock account and connected Google calendars. A paid Chronock plan is not required.
Add the Chronock MCP server URL in Claude or ChatGPT, then authorize access from Chronock’s OAuth consent screen. You do not need a separate developer account or API key.
Chronock Free plan users can use MCP for the workspace, connected calendar, booking slot, and availability features included in the Free plan. Pro-only features and plan limits still follow the normal Chronock plan rules.
The production MCP server URL is:
https://api.chronock.ai/mcpUse it with Claude
Claude supports custom connectors backed by remote MCP servers. Claude’s help center says custom connectors are available on Free, Pro, Max, Team, and Enterprise plans, with Free users limited to one custom connector.
For an individual plan, the basic flow is:
- Open
Customize > Connectorsin Claude - Click
+and chooseAdd custom connector - Enter a connector name and the Chronock MCP server URL
- Click
Add, then follow the connection flow to authorize Chronock - In a chat, use the
+button, openConnectors, and enable Chronock
On Team and Enterprise plans, an Owner or Primary Owner first adds the custom connector for the organization. Members then connect individually.
For current details, see Claude’s official help articles: Use connectors to extend Claude’s capabilities and Get started with custom connectors using remote MCP.
Use it with ChatGPT
In ChatGPT, add the Chronock MCP server in an environment that supports custom MCP apps through developer mode or workspace settings. Availability depends on your ChatGPT plan, workspace settings, and admin policy.
OpenAI’s Apps SDK documentation describes this basic flow:
- Enable developer mode from
Settings > Apps & Connectors > Advanced settings - Open
Settings > Connectors > Create - Enter the connector name, description, and Chronock MCP server URL
- Create the connector and review the advertised tools
- In a new chat, use the
+button to choose the connector for the conversation
The Chronock MCP server is a remote HTTPS MCP server, so local tunneling is not required for the production URL. If ChatGPT does not show the Create button or connector settings, check whether your plan or workspace admin settings allow custom MCP apps.
For current details, see OpenAI’s official Connect from ChatGPT guide and the Help Center article Developer mode and MCP apps in ChatGPT.
Authorization when you connect
When Claude or ChatGPT connects to the Chronock MCP server, Chronock shows an OAuth consent screen.
The consent screen shows the client ID and requested permissions. If you approve, the MCP client receives a token and uses it to access the Chronock MCP server.
Chronock separates permissions by tool.
| Permission | Used for |
|---|---|
workspaces:read |
Reading workspace lists |
calendars:read |
Reading connected calendar lists |
slots:read |
Reading booking slot lists |
availability:read |
Searching available time candidates |
Tool calls run as the user who authorized the token. If that user does not belong to a requested workspace, Chronock does not allow access to that workspace.
Candidate time emails become faster
A scheduling link is not always the best thing to send.
Depending on the relationship and context, it can feel more natural to write, “Would any of these times work for you?” In recruiting, sales, customer support, consulting, and freelance work, candidate times can feel more personal than a booking link.
The Chronock MCP server’s find_available_times tool searches connected calendars for available time candidates.
You can specify conditions such as:
| Condition | Example |
|---|---|
| Date range | July 13, 2026 through July 17, 2026 |
| Booking slot | Use the saved “Marketing Team” slot configuration |
| Duration | 30, 45, or 60 minutes |
| Time window | Weekdays, 10:00-17:00 |
| Timezone | Asia/Tokyo, America/Los_Angeles |
| Candidate count | Up to 3 candidates per day, across 3 candidate days |
| Buffers | Leave 15 minutes before and after |
When you provide a booking slot ID, Chronock uses that slot’s saved configuration instead of a manual duration or calendar list. That includes the slot’s participant calendars, duration, weekly time windows, buffers, and off calendars.
The result includes candidate times and paste-ready formatted text.
That means you can ask:
Find three 45-minute options next week between 10:00 and 17:00, and format them for an English email.
Or you can use a saved slot:
Use the Marketing Team booking slot and check whether there are any openings next week.
The same conversation can cover the availability search and the first draft of the message you send.
You spend less time comparing calendars
Availability gets harder when your schedule is split across work, personal, side-business, and project calendars.
One calendar may look open while another has an event. If you compare them manually, it is easy to miss a conflict.
Chronock’s MCP availability search can use explicitly selected calendars or the calendars already connected to Chronock.
That makes it easier to ask the assistant to treat multiple calendars as part of the same availability picture. It is useful for freelancers, consultants, side-business owners, and small teams that need to avoid double-booking across separate calendars.
You can use availability without exposing event details
Calendar access through an AI assistant raises an obvious concern: event details.
The Chronock MCP server’s availability search returns candidate times. It is not a tool for returning event titles or event descriptions.
If your calendar contains personal appointments, medical visits, family events, or side-business meetings, the useful output is not the private event content. The useful output is which meeting times are actually available.
You can inspect booking slots and calendars in the same conversation
The MCP server is not only for availability search.
It can also read workspaces, connected calendars, and booking slots.
| Information | When it helps |
|---|---|
| Workspaces | When you manage multiple teams or businesses in Chronock |
| Connected calendars | When you need to decide which calendars should count for availability |
| Booking slots | When you need to choose which booking page or meeting type to send, or copy the booking URL |
For example, you can ask the assistant to check which 30-minute consultation slots exist in a workspace and show the booking URL for the right one.
Slot results include the booking URL, title, duration, timezone, active state, buffers, room, weekly time windows, and participant names. After the assistant identifies the right slot, it can pass that slot ID to find_available_times to search openings with the slot’s saved availability rules. That makes it easier to confirm which booking slot fits the situation, check real openings, and paste the right booking page into a message without opening another screen.
It starts with read-only access
The first version of the Chronock MCP server is read-focused.
It does not let MCP clients create bookings, edit booking slots, or change calendar connections.
That is a limitation, but it also makes the first use case easier to reason about. You can start by letting the assistant help with checking, finding, and formatting scheduling information.
In the initial version, you can:
- Find available times from calendars or a saved booking slot
- Generate candidate time text
- Check connected calendars
- Check available booking slots and booking URLs
You cannot yet:
- Create a booking
- Create, edit, or delete a booking slot
- Add or remove calendar connections
- Review or revoke issued MCP tokens from the app UI
Write actions such as booking creation need confirmation flows, duplicate-prevention behavior, and separate write permissions. They are intentionally outside the initial scope.
Summary
The Chronock MCP server makes scheduling checks and candidate time creation easier.
When you add it to Claude or ChatGPT, your assistant can find available times, use saved booking slot settings, prepare candidate time text, inspect booking slots with booking URLs, and check connected calendars.
The initial version is read-only. That makes it a practical starting point for letting an AI assistant help with the steps before a booking is created: checking availability, choosing the right slot or booking page, and turning open times into a usable message.
