Stop reconciling by hand: Mercury bank lines reach Xero as drafts with the counterparty resolved and the receipt attached. You confirm and post in seconds.
The Mercury integration connects your startup banking to Well via MCP, pulling transactions, balances, and counterparty data into your workspace.
The Xero integration connects Well to your accounting platform for bidirectional data flow.
Mercury runs on US banking rails in USD; Xero closes books in GBP, AUD, NZD, or EUR depending on where the entity is registered.
Connecting them through Well handles the currency conversion, the counterparty resolution, and the matching inside its own ledger. Every Mercury transaction is reconciled against your invoices with the FX rate of the booking date and the original Mercury reference preserved; the matched document is then forwarded to Xero's email-in. Hubdoc reads the PDF and creates a draft bill with contact, dates, totals, and tax type extracted.
Every Mercury debit is scored against your open invoices inside Well on counterparty, amount, scheduled date, and currency. Above the auto-link threshold the bank line is linked to the right invoice; the matched document is then forwarded to Xero's email-in inbox with the receipt attached for your one-click confirmation.
Mercury deposits are checked against your open sales invoices inside Well. The match runs on amount and date proximity inside the same customer, so a partial payment or an aggregated weekly deposit still resolves to the right invoices before the matched document reaches Xero.
Aggregated Mercury card statement lines from corporate cards are decomposed inside Well into per-employee, per-merchant documents. Each per-employee document is forwarded to Xero separately, so expense ownership stays attached to the underlying transaction in the target ledger.
Cross-currency Mercury transfers carry the source and converted amounts; Well records the FX rate at the timestamp of settlement and includes it in the document forwarded to Xero, so the FX delta is visible alongside the operational entry when you review the draft.
Pulls from the Mercury transactions API. Picks up cleared ACH credits and debits with the company id reference. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Pulls from the Mercury transactions API. Tracks check deposits with the payer, amount, and clearing date. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Pulls from the Mercury transactions API. Captures debit card transactions with merchant and MCC code. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Pulls from the Mercury transactions API. Resolves the account and routing numbers from the Mercury account so a payment instrument can be matched. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Pulls from the Mercury transactions API. Pulls each Mercury account the workspace holds with its balance, currency, and routing details. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Pulls from the Mercury transactions API. Triggers on every debit or credit posting in a Mercury account. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Pulls from the Mercury transactions API. Captures incoming wires with originator, reference, and value date. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Pulls from the Mercury transactions API. Tracks outbound wires with beneficiary detail and instruction. Forwarded to Xero's email-in via Hubdoc; Hubdoc extracts contact, dates, totals, and tax type into a draft bill.
Driven by Mercury transaction events. Well forwards the PDF to your Xero email-in address; Xero creates a draft bill via Hubdoc with contact, dates, totals, line items, and tax type pre-filled. You review and post.
5 fields flow from Mercury into Xero.
| Mercury field | Label | Xero field | Label | |
|---|---|---|---|---|
| transaction.amount | Amount | Total | Amount | |
| transaction.currency | Currency | CurrencyCode | Currency | |
| transaction.posted_at | Posted date | Date | Transaction date | |
| transaction.bank_description | Description | Reference | Reference | |
| transaction.id | Transaction id | BankTransactionID | Bank line id |
Click Connect with Mercury; Mercury's MCP server handles authorisation through Dynamic Client Registration. Mercury's MCP server registers a read-scoped Well client through DCR; no credential paste, no shared secret.
Well discovers Mercury's transactions, wires, ACH transfers, card payments, and counterparty records and the the Xero draft bills queue populated by Hubdoc. Counterparty proximity, amount, date, and reference drive the match score; lines above 85% post automatically and the rest queue for a one-click sign-off.
Click Connect with Xero; Well's OAuth proxy handles Xero authorisation through Dynamic Client Registration. Xero's MCP server registers a write-scoped Well client through DCR; no credential paste, no shared secret.
Each one answers a question from the data this pair brings in. The required ones return nothing until a source like it is connected.
Needs a source like these
Know how many months of cash you have at your current burn, with both sides of the division shown.
See how long your cash lasts if a customer pays late, leaves, or you hire.
Know how much cash you hold right now, with the accounts counted and the ones left out both stated.
See a company's or household's spend by category, supplier and trend; not for savings: use Subscription spend.
Find the double charges and price rises in your bank debits, each with the dates and amounts your bank shows.
Know if payroll is safe, and which vendor bills to push if it is not.
Find what payment settled an invoice, or catch every payment that never got one.
Know what you spend in an average month over a window you can see, with the months that carried no spend counted.
See the settled month-end cash series and where the line goes from the last complete month.
See how the month moved from opening cash to closing cash, with whatever does not reconcile named as its own step.
See which suppliers owe you paperwork, in each of your files, for a month, a quarter or this week.
Put a name on every settled expense that still has no invoice.
Walk the whole month-end sweep in one prompt.
Drive the month-end close from open to sent to your accounting tool.
Work through your open accounting items by category.
Close the category gaps behind your spend before you close a month.
The board numbers in one pass, each with its scope and its window stated.
See what you paid a supplier, how its price moved, and get the negotiation email drafted.
See what each scheduled supplier costs a month and a year, how it moved, and where your workspaces can save.
Act on a subscription you name or pick by number from a list: cancel, renegotiate or contest a double debit.
See what you spent on one category, such as groceries, this month and how that compares to a usual month.
Get page 1 of your 1120 back as a PDF with your own book figures already in the boxes, and a list of every box left for your preparer.
Get one 1099-NEC per contractor back as a PDF with your own posted figures already in box 1, and the list of payees you cannot file for yet.
See what in a month has not reached the ledger, and which pile each item sits in.
Compare your bank with your books, list the gaps, and re-run what missed rows.
See the VAT position your data suggests for a quarter, and which invoices to fix first.
Read your profit and loss or balance sheet from QuickBooks, Xero or Pennylane.
Answers better with these connected
See which customers still owe you money: the unpaid and overdue invoices, how late each is, and the total.
See what you owe and when, ordered by due date with a running total.
Rank your most valuable customers by lifetime value, over a year you name or their whole life.
See how much of your cash and receivables sit outside your reporting currency.
Everything you know about one company, in one view.
Find the bills with no paperwork attached, before an auditor does.
See the monthly run-rate of live subscriptions, or an invoice average when no typed subscriptions are present.
See exactly which agents would run, before any of them does.
Turn mixed currencies into one number you can actually audit.
See what you owe your suppliers, and how long each bill has been past due.
The measures you name, arranged on one board that stores the question rather than the answer.
See how much each customer billed in a period, ranked by revenue, with the part you could not place named.
See what each supplier invoiced you over a year, ranked, with unplaced invoices counted.
Claim a refund or a compensation with the evidence in hand, and know what to say when you call.
Find money owed back to you: refunds, credit notes, VAT credits, double debits, then unpaid customer invoices.
Read a month of payslips, or each of several months, and state, per person, gross pay plus the employee deductions and the employer charges the payslip printed, then list the payroll related bills paid from the bank that no payslip carries.
For each supplier that looks like a freelancer, read the purchase invoices, the payment rail and any contract Well holds, and state the facts a requalification question turns on, next to the papers your country expects you to keep.
Uses them when they are there
Connects and checks them
See what is connected, what is syncing, and what is missing.
Connect your AI apps and your tools, then see your business as one context graph.
Get the bank feed in, and confirm it is really live.
The companies you deal with that carry no tax identifier, listed before year end.
Well connects to Mercury through its MCP server, which issues short-lived access tokens via Dynamic Client Registration. Well never holds a long-lived Mercury secret; the server refreshes its own tokens on each session. Anything Well holds between Mercury and Xero is encrypted at rest and handled in line with GDPR.
Read Mercury records
Scoped to transactions, wires, ACH transfers, card payments, and related records. No access to anything else in your Mercury account.
Deliver documents to your Xero inbox
Well forwards the extracted document to your Xero email-in address; Xero reads draft bills via email-in, with contact, dates, totals, and related records from it and you review and post. No write credential to Xero is requested.
Modify or delete Mercury records
Not granted. Mercury is read-only on Well's side; the source of truth never moves.
Read other workspaces' data
Not granted. A session resolves only to the workspaces your account belongs to, and Well checks that membership before it returns any record.
Connect both sides. Cash lines arrive in Xero with their source still attached.
Other ways to connect Mercury or Xero through Well.
Mercury
See the Mercury connector
Xero
See the Xero connector
Mercury → Pennylane
Reconcile Mercury USD transactions inside Well, then forward…
Mercury → Qonto
Reconcile Mercury USD activity against Qonto EUR balances wi…
Gmail → Xero
Capture invoices from Gmail, extract data with AI, and push…
iBanFirst
See the iBanFirst connector
Plaid
See the Plaid connector
Freshbooks
See the Freshbooks connector
