Integration
Connect CalendarLink to LettrLabs
When something happens in CalendarLink, your agent does the next thing in LettrLabs. Describe it and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want CalendarLink and LettrLabs to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiAny client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What CalendarLink can start in LettrLabs
When New Upcoming Event in CalendarLink
then Send Purchase Event in LettrLabs
When New Upcoming Event in CalendarLink
then Add Address Book Entry in LettrLabs
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with CalendarLink and LettrLabs
Triggers and actions 1 trigger · 13 actions
Trigger
New Upcoming EventTriggered when a new upcoming event is added to your CalendarLink organisation.
Action
Create New EventCreates an event in a CalendarLink collection and returns its add-to-calendar link. Times use the format 2026-09-01 09:00:00. Optionally turns on RSVP with a deadline, attendee limit and notification settings.
Action
Find EventSearches your CalendarLink events for one whose title contains the text you give, and returns the first match with its add-to-calendar link, times and RSVP counts.
Action
List ContactsReturns a page of the contacts in your CalendarLink organisation, 15 per page, along with how many pages there are.
Action
List Event CollectionsReturns every event collection in your CalendarLink organisation, with each collection's ID, name, description, public link and event count.
Action
List Event RegistrationsReturns a page of the people who signed up for one CalendarLink event, 15 per page. The event must have RSVP turned on.
Action
List Past EventsReturns a page of your CalendarLink events that have already finished, 15 per page, newest first.
Action
List Upcoming EventsReturns a page of your CalendarLink events that have not happened yet, 15 per page.
Action
Update Event CollectionChanges the settings of one CalendarLink event collection — its name, description, appearance, what visitors can add and whether sign-up is required. Only the fields you fill in are changed; the rest keep their current values.
Action
Add Address Book EntryAdd an entry to the account's address book.
Action
Delete ConversionDelete a recorded conversion by id.
Action
Get ConversionFetch the status of a single conversion by id.
Action
List ConversionsReturns all conversions recorded for this LettrLabs account, each with its processing status.
Action
Send Purchase EventRecords a purchase or lead with LettrLabs so it can be matched back to the mail you sent, and returns how LettrLabs parsed and typed it.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
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More into LettrLabs
Stripe to LettrLabsStripe is a payment processing platform for online businesses.
HubSpot to LettrLabsHubSpot is your all-in-one stop for all of your marketing software needs.
Salesforce to LettrLabsSalesforce is a leading enterprise customer relationship management (CRM) platform.
Slack to LettrLabsSlack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...
Google Sheets to LettrLabsGoogle Sheets
Gmail to LettrLabsGmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...
Questions
CalendarLink and LettrLabs, answered
What can start an automation from CalendarLink?
Any of CalendarLink's 1 trigger in the catalog, including New Upcoming Event. Describe the moment in plain language and your agent picks the right one.
What can your agent do in LettrLabs when something happens in CalendarLink?
Any of LettrLabs's 5 actions, including Send Purchase Event, Add Address Book Entry, Get Conversion and List Conversions. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from LettrLabs to CalendarLink?
LettrLabs has no triggers in the catalog today, so automations start in CalendarLink. If you need the other direction, ask: your agent reads LettrLabs's API documentation and adds it.
Do I have to build a connector for CalendarLink or LettrLabs?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.