Integration
Connect OnceHub to Resend
When Booking Completed fires in OnceHub, your agent runs Add Contact to Segment in Resend. Describe the whole flow 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 OnceHub and Resend to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any 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 OnceHub can start in Resend
When Booking Completed in OnceHub
then Add Contact to Segment in Resend
When Contact Updated in OnceHub
then Create Contact in Resend
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 OnceHub and Resend
Triggers and actions 15 triggers · 45 actions
Trigger
Booking CanceledTriggers when a OnceHub booking is canceled by the customer or by someone on your team.
Trigger
Booking Cancelled and RescheduledTriggers when a customer cancels a OnceHub booking and then reschedules it on a different booking page.
Trigger
Booking CompletedTriggers when a OnceHub booking's end time has passed and the meeting is marked completed.
Trigger
Booking Lifecycle EventTriggers on any OnceHub booking event — scheduled, rescheduled, reassigned, canceled, completed or no-show — with the event name included so you can branch on it.
Trigger
Booking No-ShowTriggers when a OnceHub booking is marked as a no-show.
Trigger
Booking RescheduledTriggers when a OnceHub booking is rescheduled to a new time.
Trigger
Booking ScheduledTriggers when a new OnceHub booking is scheduled.
Trigger
Contact CapturedTriggers when a new contact is captured in OnceHub.
Trigger
Contact Lifecycle EventTriggers whenever a OnceHub contact is created or changed, so you catch the whole contact lifecycle in one place.
Trigger
Contact UpdatedTriggers when an existing OnceHub contact is updated.
Trigger
Conversation AbandonedTriggers when a website visitor stops replying to a OnceHub chatbot for more than ten minutes and the conversation is abandoned.
Trigger
Conversation ClosedTriggers when a OnceHub chatbot conversation is closed.
Trigger
Conversation Lifecycle EventTriggers on any OnceHub conversation event — started, closed or abandoned — with the event name included so you can branch on it.
Trigger
Conversation StartedTriggers when a website visitor sends their first message to a OnceHub chatbot and a conversation starts.
Trigger
Reassigned BookingTriggers when a OnceHub booking is reassigned to a different host.
Action
Cancel BookingCancels a OnceHub booking, optionally with a reason and without emailing the customer.
Action
Create ContactCreates a new contact in OnceHub. Give at least an email address or a mobile number.
Action
Create One-Time Booking LinkCreates a one-time booking link for a published OnceHub booking calendar, optionally prefilling the booking form and pinning the host or duration.
Action
Delete ContactDeletes a contact from OnceHub.
Action
Find ContactFinds a OnceHub contact by email address.
Action
Get Available Time SlotsReturns the open meeting times on a OnceHub booking calendar for the window you choose.
Action
Get Booking CalendarReturns one OnceHub booking calendar with its host, public link and meeting length.
Action
Get Booking DetailsReturns one OnceHub booking with its time, customer details and booking form answers.
Action
Get ContactReturns one OnceHub contact with its details and custom fields.
Action
Get Contact's Future MeetingsReturns a contact's upcoming OnceHub meetings — the bookings that start after the time you give.
Action
List Booking CalendarsLists the booking calendars in your OnceHub account.
Action
List BookingsLists OnceHub bookings, with optional filters for status, contact, host, calendar and date range.
Action
List ContactsLists the contacts in your OnceHub account, with optional email and date filters.
Action
Mark Booking as No-ShowMarks a OnceHub booking as a no-show.
Action
Reassign BookingReassigns a OnceHub booking to a different host, optionally naming the video conferencing service to use.
Action
Request RescheduleAsks the customer to pick a new time for a OnceHub booking, optionally telling them why.
Action
Update ContactUpdates an existing OnceHub contact. Only the fields you fill in are changed; anything left blank keeps its current value.
Action
Add Contact to SegmentAdds a contact to a Resend segment. You can identify the contact by its ID or email address.
Action
Add SuppressionAdds an email address to your Resend suppression list so no further mail is sent to it.
Action
Cancel EmailCancels a scheduled Resend email that has not been sent yet.
Action
Create API KeyCreates a new Resend API key. The key itself is returned once, so store it right away.
Action
Create ContactCreates a contact in Resend. Returns the new contact's ID.
Action
Create DomainAdds a sending domain to Resend. Returns the DNS records you need to add at your domain host to verify it.
Action
Create SegmentCreates a new segment in Resend for grouping contacts.
Action
Delete API KeyDeletes a Resend API key so it can no longer be used.
Action
Delete ContactDeletes a contact from Resend. You can identify the contact by its ID or email address.
Action
Delete DomainRemoves a sending domain from Resend.
Action
Delete SegmentDeletes a segment from Resend. The contacts themselves are not deleted.
Action
List API KeysReturns the API keys on your Resend account, with each key's name and when it was last used. The key values themselves are never returned.
Action
List ContactsReturns the contacts in your Resend account, optionally limited to one segment.
Action
List DomainsReturns the sending domains on your Resend account and each one's verification status.
Action
List SegmentsReturns the contact segments in your Resend account.
Action
List Sent EmailsReturns the emails you have sent through Resend, newest first, with each email's id, sender, recipients, subject, send time and latest delivery event. Supports paging before or after a given email id.
Action
List SuppressionsReturns the email addresses on your Resend suppression list, showing for each one the address, why it was suppressed (bounce, complaint or added manually), the email that triggered it and when it was added.
Action
Remove Contact From SegmentRemoves a contact from one of your Resend segments. Identify the contact by its ID or by its email address, and name the segment to take it out of. The contact itself is not deleted.
Action
Remove SuppressionTakes an email address off your Resend suppression list so you can send to it again. Identify it by the suppression ID or by the email address itself.
Action
Retrieve ContactReturns one contact from your Resend audience, including their name, email address, whether they have unsubscribed, when they were added, and any custom properties stored on them. Look the contact up by its ID or by its email address.
Action
Retrieve DomainReturns one of your Resend sending domains, including its name, verification status, sending region, tracking settings and the DNS records it needs with each record's current status.
Action
Retrieve SegmentReturns one of your Resend segments by its ID, with the segment's name and when it was created.
Action
Retrieve Sent EmailReturns one email you sent through Resend, with its sender, recipients, subject, HTML and text body, tags, send time and latest delivery event.
Action
Send Batch EmailsSends up to 100 emails through Resend in a single call. Give it a list of emails, each with a sender, recipients, subject and body, and it returns the id of every email it created.
Action
Send EmailSends an email through Resend. Set the sender, recipients and subject, provide an HTML or plain text body, and optionally add CC/BCC, reply-to, attachments, tags or a send time.
Action
Update ContactUpdates a contact in your Resend audience. Identify the contact by ID or email address, then change the name, the subscribed/unsubscribed state, or the custom properties. Anything you leave blank stays as it is.
Action
Update EmailReschedules an email you already queued in Resend, moving it to a new send date and time. Only emails that have not gone out yet can be changed.
Action
Verify DomainAsks Resend to re-check the DNS records for one of your sending domains and start verifying it. Verification runs in the background, so the domain shows as pending until it finishes.
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
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Questions
OnceHub and Resend, answered
What can start an automation from OnceHub?
Any of OnceHub's 15 triggers in the catalog, including Booking Completed, Contact Updated, Booking Lifecycle Event and Booking No-Show. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Resend when something happens in OnceHub?
Any of Resend's 28 actions, including Create API Key, Create Contact, Create Domain and Create Segment. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Resend to OnceHub?
Resend has no triggers in the catalog today, so automations start in OnceHub. If you need the other direction, ask: your agent reads Resend's API documentation and adds it.
Do I have to build a connector for OnceHub or Resend?
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.
Can my AI client use OnceHub and Resend without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
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.