Integration
Connect Quaderno and Returnless
When New Contact fires in Quaderno, your agent runs Find customers in Returnless, or Request Created in Returnless to Add invoice payment in Quaderno. 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 Quaderno and Returnless to do together?
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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 Quaderno and Returnless can do together
From Quaderno to Returnless
When New Contact in Quaderno
then Find customers in Returnless
When New Invoice in Quaderno
then Add note in Returnless
From Returnless to Quaderno
When Request Created in Returnless
then Add invoice payment in Quaderno
When Return Created in Returnless
then Create Contact in Quaderno
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 Quaderno and Returnless
Triggers and actions 5 triggers · 40 actions
Trigger
New ContactTriggers when a new contact is created in Quaderno.
Trigger
New InvoiceTriggers when a new invoice is created in Quaderno.
Trigger
New SaleTriggers when a new sale is recorded in Quaderno, i.e. a new invoice or receipt is created.
Action
Add invoice paymentRecords a payment against a Quaderno invoice. When total payments reach the invoice amount, the invoice is marked as paid.
Action
Add productCreates a new product in Quaderno that can be used as a line item on invoices, credit notes and expenses.
Action
Add receiptCreates a paid receipt in Quaderno for a completed sale, with its customer, line items and payment method.
Action
Calculate tax rateCalculates the tax rate and tax amount that applies to a sale for a given customer location and product type.
Action
Create ContactCreates a new contact (customer or vendor) in Quaderno and returns the created contact.
Action
Create EstimateCreates an estimate (proforma) in Quaderno for a customer, with line items, dates and notes.
Action
Create ExpenseCreates an expense in Quaderno for a vendor, with its line items, and returns the new expense.
Action
Create InvoiceCreates an invoice for a customer with line items; optionally records full payment so the invoice is marked paid.
Action
Create Paid InvoiceCreates an invoice for a customer and records a full payment against it, so the invoice is marked paid.
Action
Create SaleRecords a sale in Quaderno, which calculates taxes and issues the matching invoice or receipt for the customer.
Action
Delete contactPermanently deletes a contact (customer or vendor) from your Quaderno account.
Action
Find ContactFinds contacts whose name, email or tax ID matches the search text, or whose payment-processor ID matches.
Action
Find SaleFinds sales (invoices) by invoice number, customer name or PO number, payment processor transaction id, customer, state or issue date range, and returns the matches.
Action
Get contactReturns a single Quaderno contact (customer or vendor) by its ID.
Action
Get EstimateReturns a single estimate (proforma) by its id, including its number, customer, line items, taxes and totals.
Action
Get ExpenseReturns the details of an existing expense in your Quaderno account.
Action
Get invoiceReturns a single invoice by its id, including number, contact, line items, taxes, totals and payments.
Action
Get productReturns a single product (item) from your Quaderno account by its id, including its name, code, price and tax settings.
Action
Get ReceiptReturns a receipt by its id, including number, totals, taxes, contact and payment details.
Action
Update contactUpdates an existing Quaderno contact. Fields left blank keep their current values.
Action
Update invoiceUpdates the editable fields of an existing invoice: PO number, tags, payment details, notes, custom metadata and billing address.
Action
Update productUpdates an existing product in Quaderno. Only the fields you fill in are changed.
Action
Validate tax IDChecks whether a customer's tax ID (EU/UK VAT, ABN, NZBN, QST, Swiss UID) is valid and belongs to a real business.
Action
Void invoiceVoids an existing invoice in Quaderno and returns the voided invoice.
Trigger
Request CreatedTriggers when a customer creates a new return request that needs approval.
Trigger
Return CreatedTriggers when a new return is created, including a request once it is approved.
Action
Add noteAdds an internal note to a return or return request.
Action
Add RequestCreates a return request in Returnless for items from an existing sales order.
Action
Approve a RequestApproves a return request in Returnless so the customer can send the items back.
Action
Approve a Request Without ShipmentApproves a pending return request without a return shipment, so the customer keeps the items.
Action
Find customersReturns the customers in your Returnless account that match an email address.
Action
Find productsReturns the products in your Returnless account that match a SKU.
Action
Find RequestsFinds a Request in your Returnless account.
Action
Find ReturnsFinds returns (return orders) in Returnless by return number.
Action
Find sales ordersFinds sales orders in Returnless by order number.
Action
Get customerReturns a single Returnless customer by its id.
Action
Get Request (By Request ID)Returns a single return request (return order) from Returnless by its ID.
Action
Get Return (By Return ID)Returns a single return in Returnless, with all of its details, by its return ID.
Action
Get sales orderReturns a single sales order by its ID, including its customer, address and order details.
Action
List return reasonsReturns the return reasons configured in your Returnless account.
Action
Reject RequestRejects a pending return request in Returnless.
Action
Update returnChanges the status of a return, such as Checked, Approved or Resolved.
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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Questions
Quaderno and Returnless, answered
What can start an automation from Quaderno?
Any of Quaderno's 3 triggers in the catalog, including New Contact, New Invoice and New Sale. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Returnless when something happens in Quaderno?
Any of Returnless's 16 actions, including Update return, Add note, Add Request and Approve a Request. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Returnless to Quaderno?
Yes. When something happens in Returnless, your agent can act in Quaderno too. This page covers both directions: Returnless's triggers and Quaderno's actions are listed here as well.
Do I have to build a connector for Quaderno or Returnless?
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.