What Pennylane data does Well pull into Melio?

Pennylane streams supplier and customer invoices, contacts, and VAT detail read over Pennylane's MCP server to Well over its MCP server. After Well resolves the counterparty and assigns a confidence score, the matched record posts to Melio as bills via email-in at @invoicesmelio.com, with vendor, amount, and due date populated by Smart Bill Capture, with the Pennylane event ID preserved on the entry for audit.

How often does Pennylane data sync to Melio?

Pennylane pushes events to Well over its MCP server, so most records land within seconds of the underlying action. Each event is matched immediately and reaches Melio within a confidence window: above 85% it posts, 55-85% queues for review, below 55% is refused.

How does Well match Pennylane records to entries in Melio?

Well scores every candidate match between Pennylane records and existing Melio entries on counterparty name, amount, date proximity, currency, and reference. Above 85% the record links to the historical entry and Melio updates; between 55% and 85% the candidates are queued for sign-off; below 55% the record stays open with the candidate list available.

Does Well handle multi-currency records between Pennylane and Melio?

Pennylane carries the original transaction currency on every record, but Melio ledgers in a single base; Well preserves the source currency, attaches the FX rate at the timestamp of the event, and the converted figure and the source amount both travel on the document Well forwards to Melio, so both sides of the trade are visible when you post.

How does Well prevent duplicates when posting Pennylane records to Melio?

Pennylane sends each event with a stable resource ID that Well tracks against the Melio ledger. Webhook replays (which Pennylane can issue for delivery retries) are recognised by ID and either skipped or used to update the existing Melio entry. Distinct records that look similar are caught by Well before posting, with the candidates surfaced in the review queue when confidence is ambiguous.

How does Well authenticate with Pennylane and Melio?

Pennylane's MCP server handles authorisation directly; Well receives an access token through Dynamic Client Registration and never sees raw user credentials. For the delivery side, Well forwards the reconciled document to your Melio email-in address once it clears the matching threshold; Melio creates the draft record from it and you confirm and post it. Well holds no write credential to Melio. Tokens are encrypted at rest and in transit under TLS 1.3. Pennylane hosts in the EU and Melio hosts outside the EU; Well processes records per the storage region configured for your workspace.

Pennylane to Melio

AvailableNative · PennylaneNative · Melio

Connect Pennylane to Melio with Well

Move Pennylane invoices and contacts through Well and into Melio as bills, with the audit trail kept on every record.

Connect both toolsView all integrations

Pennylane

Source

The Pennylane integration creates a bidirectional bridge between Well and your accounting workspace.

Melio

Target

The Melio connection delivers extracted bills into Melio through its Pay Bills email address.

Why this pair

Connect Pennylane to Melio through Well so records flow without manual rework.

What Well does between Pennylane and Melio

One-way: Pennylane into Well into Melio
Sync mode: Real-time MCP push
Events arrive in seconds

Trigger from Pennylane

4 events · pick one

Well engine·recipe·When a Pennylane customer invoice is read

Source

from payment · live webhook

Sunrise Coffee Co.

via Pennylane

Invoice

When a Pennylane customer invoice is read

INV-1284 · 22 Apr 2026€1,284.00

Extract

5 fields read from Pennylane

5 fields read

CustomerSunrise Coffee Co.
Invoice numberINV-1284
Issue date22 Apr 2026
Total€1,284.00
CurrencyEUR

Enrich

against your historical record graph

4 fields added

Customer recordSunrise Coffee Co.
Domainsunrisecoffee.com
Tax idUS12-3456789
Sales journalVE · 2026

Confidence97%

<55% refused55–85% review≥85% auto-posts

Post

schedule as bills

Create a bill in your Melio inbox

auto-posted

posted

TypeBill
VendorSunrise Coffee Co.
Amount€1,284.00
LedgerVE · 2026
Source docattached
Confidence97%

audit linkto Melio

Action in Melio

1 compatible with this trigger

Create a bill in your Melio inbox

12 signals and actions across Pennylane and Melio

When a Pennylane bank account is read
Pulls the bank accounts linked in Pennylane with currency and holder detail.
Trigger·Account
When a Pennylane transaction is read
Captures the bank transactions Pennylane holds with amount, date, and counterparty.
Trigger·Transaction
When a Pennylane credit note is read
Captures Pennylane credit notes with the linked invoice, totals, and VAT so refunds reconcile correctly.
Trigger·Invoice
When a Pennylane invoice attachment is read
Picks up the source PDF attached to a Pennylane invoice as a document.
Trigger·Document
When a Pennylane payment is read
Reads the payment recorded against a Pennylane invoice with method and amount.
Trigger·Payment method
When a Pennylane customer is read
Pulls Pennylane company customers with name, registration number, and billing detail.
Trigger·Company
When a Pennylane supplier invoice is read
Pulls Pennylane supplier invoices with the supplier, amount, due date, and VAT.
Trigger·Invoice
When a Pennylane customer invoice is read
Pulls Pennylane customer invoices with line items, customer, totals, and VAT.
Trigger·Invoice
Create a bill in your Melio inbox
Well forwards the PDF to your @invoicesmelio.com address; Melio's Smart Bill Capture lifts the vendor, amount, and due date into a Bills Inbox entry that waits for you to schedule a payment date and funding method.
Action·Invoice

Reference

Field mapping for Pennylane → Melio

10 fields across 2 record types, open to see the full table.

Invoice fields

5 fields flow from Pennylane into Melio.

Pennylane field	Label		Melio field	Label
invoice.amount.total	Total amount	→	amount	Amount
invoice.currency	Currency	→	currency	Currency
invoice.deadline.due_date	Due date	→	due_date	Due date
invoice.invoice_number	Reference	→	bill_number	Bill number
invoice.id	Pennylane id	→	bill_id	Bill id

Transaction fields

5 fields flow from Pennylane into Melio.

Pennylane field	Label		Melio field	Label
transaction.amount	Amount	→	amount	Amount
transaction.currency	Currency	→	currency	Currency
transaction.date.created	Execution date	→	scheduled_for	Payment date
transaction.label.description	Label	→	reference	Reference
transaction.id	Transaction id	→	payment_id	Payment id

Connect Pennylane and Melio in three steps.

1
Connect Pennylane
Click Connect with Pennylane; Well's OAuth proxy handles Pennylane authorisation through Dynamic Client Registration. Pennylane's MCP server registers a read-scoped Well client through DCR; no credential paste, no shared secret.
- AuthOAuth 2.0
2
Map your accounts
Well discovers Pennylane's supplier and customer invoices, contacts, and VAT detail read over Pennylane's MCP server and the the Melio Bills Inbox awaiting payment scheduling. Match candidates are scored on counterparty, amount, date, and reference; above 85% confidence the link posts automatically, below it the candidate set queues for sign-off.
- Auto-post above85% confidence
- Overridemanual anytime
3
Connect Melio
In Melio, open Settings > Integrations and generate an API token with payment-write scope. Paste the key into Well; Melio's discovery endpoints are reached over TLS 1.3 and the secret is never echoed in the UI.
- AuthConnect
- First sync~10 min

How Pennylane and Melio stay secure with Well

Well connects to Pennylane through its MCP server, which issues short-lived access tokens via Dynamic Client Registration. Well never holds a long-lived Pennylane secret; the server refreshes its own tokens on each session. Well processes records per the storage region configured for your workspace; only fields strictly required by the write surface are ferried across regions.

MCP server authEU residency optionGDPR-aligned

Scopes Well requestswellapp.ai/v1/mcps/pennylane/mcp

Read Pennylane records
Scoped to supplier and customer invoices, contacts, and VAT detail read over Pennylane's MCP server. No access to anything else in your Pennylane account.
granted
Deliver documents to your Melio inbox
Well forwards the extracted document to your Melio email-in address; Melio reads bills via email-in at @invoicesmelio.com, with vendor, amount, and due date populated by Smart Bill Capture from it and you review and post. No write credential to Melio is requested.
granted
Modify or delete Pennylane records
Not granted. Pennylane is read-only on Well's side; the source of truth never moves.
refused
Read other workspaces' data
Encryption keys are per-workspace; another tenant's records are inaccessible by design.
refused

Disconnect any time from Well settings or Pennylane’s admin panel.

Frequently asked questions about Pennylane and Melio on Well

01What Pennylane data does Well pull into Melio?: Pennylane streams supplier and customer invoices, contacts, and VAT detail read over Pennylane's MCP server to Well over its MCP server. After Well resolves the counterparty and assigns a confidence score, the matched record posts to Melio as bills via email-in at @invoicesmelio.com, with vendor, amount, and due date populated by Smart Bill Capture, with the Pennylane event ID preserved on the entry for audit.
02How often does Pennylane data sync to Melio?: Pennylane pushes events to Well over its MCP server, so most records land within seconds of the underlying action. Each event is matched immediately and reaches Melio within a confidence window: above 85% it posts, 55-85% queues for review, below 55% is refused.
03How does Well match Pennylane records to entries in Melio?: Well scores every candidate match between Pennylane records and existing Melio entries on counterparty name, amount, date proximity, currency, and reference. Above 85% the record links to the historical entry and Melio updates; between 55% and 85% the candidates are queued for sign-off; below 55% the record stays open with the candidate list available.
04Does Well handle multi-currency records between Pennylane and Melio?: Pennylane carries the original transaction currency on every record, but Melio ledgers in a single base; Well preserves the source currency, attaches the FX rate at the timestamp of the event, and the converted figure and the source amount both travel on the document Well forwards to Melio, so both sides of the trade are visible when you post.
05How does Well prevent duplicates when posting Pennylane records to Melio?: Pennylane sends each event with a stable resource ID that Well tracks against the Melio ledger. Webhook replays (which Pennylane can issue for delivery retries) are recognised by ID and either skipped or used to update the existing Melio entry. Distinct records that look similar are caught by Well before posting, with the candidates surfaced in the review queue when confidence is ambiguous.
06How does Well authenticate with Pennylane and Melio?: Pennylane's MCP server handles authorisation directly; Well receives an access token through Dynamic Client Registration and never sees raw user credentials. For the delivery side, Well forwards the reconciled document to your Melio email-in address once it clears the matching threshold; Melio creates the draft record from it and you confirm and post it. Well holds no write credential to Melio. Tokens are encrypted at rest and in transit under TLS 1.3. Pennylane hosts in the EU and Melio hosts outside the EU; Well processes records per the storage region configured for your workspace.