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What do you want Square and Resend to do together?
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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 Square can start in Resend
When New order in Square
then Add Contact to Segment in Resend
When New or updated customer in Square
then Add Suppression 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 Square and Resend
Triggers and actions 3 triggers · 47 actions
Trigger
New orderTriggered when a new order is created at the specified location.
Trigger
New or updated customerTriggered when a customer is created or updated.
Trigger
New paymentTriggered when a new payment is received.
Action
Add catalog objectCreates a catalog object (item, variation, category, tax, discount, modifier list and more) in the Square catalog.
Action
Add orderCreates a new Square order at a location, with optional line items, taxes, discounts, service charges and a fulfillment.
Action
Add paymentCreates a payment: charges a card or payment token, or records a cash or external payment the seller received outside Square.
Action
Add refundRefund a payment.
Action
Cancel paymentCancels (voids) a Square payment that is still in the APPROVED status, i.e. a delayed-capture payment that has not been completed.
Action
Create customerCreates a new customer profile.
Action
Delete catalog objectDeletes a Square catalog object by ID, along with any objects that depend on it (for example an item's variations).
Action
Delete customerDeletes a customer profile by ID.
Action
Find catalog objectRetrieves a catalog object (item, variation, etc.) by ID.
Action
Find customerReturns customer details for the specified customer ID.
Action
Find orderRetrieves an order by ID.
Action
Find paymentRetrieves a payment by ID.
Action
List locationsLists all business locations for the connected Square account.
Action
List paymentsLists payments for the connected merchant, newest first.
Action
Search catalog objectsSearches catalog objects by type (ITEM, CATEGORY, etc.).
Action
Search customersSearches customer profiles by email, phone, or reference ID.
Action
Search ordersSearches orders for the specified location(s).
Action
Update customerUpdates an existing customer profile.
Action
Update orderUpdates an open Square order by adding or replacing fields, or clearing them. Completed or canceled orders cannot be updated.
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
Reviews
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Questions
Square and Resend, answered
What can start an automation from Square?
Any of Square's 3 triggers in the catalog, including New order, New or updated customer and New payment. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Resend when something happens in Square?
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 Square?
Resend has no triggers in the catalog today, so automations start in Square. 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 Square 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.
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.