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What do you want Xero and fastbill to do together?
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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 Xero can start in fastbill
When New bill in Xero
then Add Payment for Invoice in fastbill
When New or updated contact in Xero
then Add Payment for Revenue in fastbill
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 Xero and fastbill
Triggers and actions 4 triggers · 44 actions
Trigger
New billTriggered when a new bill (ACCPAY) is added.
Trigger
New or updated contactTriggered when a contact is created or updated.
Trigger
New paymentTriggered when a new payment is received.
Trigger
New sales invoiceTriggered when a new sales invoice (ACCREC) is added.
Action
Add accountCreate a chart of accounts entry.
Action
Add credit noteCreate a credit note.
Action
Add itemCreate an inventory/sales item.
Action
Add purchase orderCreate a purchase order.
Action
Add quoteCreate a quote.
Action
Create bank transactionCreate a spend or receive money bank transaction.
Action
Create billCreate a new bill (Accounts Payable, Type=ACCPAY).
Action
Create or update contactCreate a new contact or update an existing one.
Action
Create paymentCreate a payment against an approved invoice.
Action
Create sales invoiceCreate a new sales invoice (Accounts Receivable, Type=ACCREC).
Action
Find contact by emailFind a contact by email address.
Action
Get contactRetrieve a single contact by ContactID.
Action
Get invoiceRetrieve a single invoice by InvoiceID.
Action
Get quoteReturns one quote by its id, with its contact, status, line items and totals.
Action
List accountsRetrieve the chart of accounts.
Action
List bank transactionsList bank transactions.
Action
List contactsRetrieve contacts from Xero.
Action
List credit notesList credit notes.
Action
List invoicesRetrieve sales invoices and bills.
Action
List itemsList items.
Action
List organisationsRetrieve organisation details for the connected Xero tenant.
Action
List paymentsRetrieve payments.
Action
List purchase ordersList purchase orders.
Action
List tax ratesList tax rates.
Action
Update contactUpdate a contact by id.
Action
Update invoiceUpdate a draft/submitted invoice.
Action
Add Payment for InvoiceAdds full payment for invoice
Action
Add Payment for RevenueAdds full payment for revenue
Action
Create CustomerCreates a new customer in FastBill
Action
Create InvoiceCreates a new invoice
Action
Create OfferCreates a new offer in FastBill
Action
Create RevenueCreates a revenue entry
Action
Delete CustomerDelete a FastBill customer by ID.
Action
Delete InvoiceDelete a FastBill invoice by ID.
Action
Delete OfferDelete a FastBill offer/estimate by ID.
Action
Finalize InvoiceConverts an invoice draft to a final invoice
Action
Get CustomerFetch a single FastBill customer by ID.
Action
Get InvoiceFetch a single FastBill invoice by ID.
Action
Get OfferFetch a single FastBill offer/estimate by ID.
Action
Search CustomerSearch for a Customer
Action
Search InvoiceFind an invoice
Action
Send Invoice by EmailSend an invoice by email
Action
Update CustomerUpdate fields on an existing FastBill customer.
Action
Update InvoiceUpdate fields on an existing (draft) FastBill invoice.
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
Xero and fastbill, answered
What can start an automation from Xero?
Any of Xero's 4 triggers in the catalog, including New bill, New or updated contact, New payment and New sales invoice. Describe the moment in plain language and your agent picks the right one.
What can your agent do in fastbill when something happens in Xero?
Any of fastbill's 18 actions, including Create Customer, Create Invoice, Create Offer and Create Revenue. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from fastbill to Xero?
fastbill has no triggers in the catalog today, so automations start in Xero. If you need the other direction, ask: your agent reads fastbill's API documentation and adds it.
Do I have to build a connector for Xero or fastbill?
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.