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Integration guide

Base44 Xero integration

If you’ve built a business application on Base44 and need to send invoices, quotes, or accounting data to Xero, Ping Ledger provides the integration bridge — so you don’t have to build and maintain a complete Xero API integration yourself.

The integration problem

Base44 apps can generate invoices, quotes, and financial records. But getting that data into Xero means dealing with OAuth 2.0, token refresh logic, contact lookups, tax type mapping, rate limiting, and error handling — a full integration project that needs ongoing maintenance as the Xero API evolves. For most app builders, that’s a distraction from the core product.

How Ping Ledger fits

Ping Ledger sits between your Base44 app and Xero. Your app sends invoice data to Ping Ledger’s secure bridge endpoint, and Ping Ledger handles everything on the Xero side.

Your Base44 app

A backend function sends invoice data as JSON or CSV to the Ping Ledger bridge endpoint.

Ping Ledger bridge

Authenticates with Xero, resolves contacts, maps tax types, and creates draft records.

Step by step

  1. 1Your Base44 backend function sends invoice data to the Ping Ledger bridge API.
  2. 2Ping Ledger authenticates with Xero using per-client OAuth credentials.
  3. 3Contacts are matched or created in Xero automatically.
  4. 4VAT labels and rates are mapped to valid Xero tax types.
  5. 5A draft invoice or quote is posted to Xero, with PDF attachments if provided.

Technical details

Ping Ledger itself is built on Base44, so the integration path is natural. A Base44 backend function can call the Ping Ledger bridge endpoint using standard HTTP requests, sending invoice data as structured JSON or CSV. Each request is authenticated with an HMAC signature, and Ping Ledger handles all Xero API calls server-side — tokens, refresh logic, and credentials never reach the client.

Server-to-server API with HMAC authentication
Per-client Xero OAuth 2.0 token management
Automatic contact resolution and creation
VAT rate and label to Xero tax type mapping
Rate-limit backoff and daily-limit detection
Full audit trail with processing job records

Use cases

  • Send invoices from a Base44 app to Xero as draft records for review.
  • Create quotes in Xero from your Base44 application data.
  • Attach PDF documents to Xero invoices automatically.
  • Automate accounting data flow without manual re-entry.
  • Sync line items, account codes, and tax types from your app to Xero.

Frequently asked questions

Can Base44 integrate with Xero?
Yes. A Base44 application can send invoice and quote data to Xero through Ping Ledger’s bridge API. Ping Ledger handles the Xero OAuth, API calls, contact resolution, and tax mapping — your Base44 app only needs to send the data.
How do I connect Base44 to Xero?
You send invoice data from your Base44 backend function to Ping Ledger’s secure endpoint. Ping Ledger then authenticates with Xero, resolves the contact, maps tax types, and creates a draft invoice or quote in Xero on your behalf.
Do I need to build my own Xero API integration?
No. Ping Ledger manages the Xero API end to end, including OAuth token management, rate limiting, contact lookup, and error handling. Your Base44 app sends data to the bridge and receives back the created Xero record ID.
What types of records can I send to Xero from Base44?
Ping Ledger currently supports invoices and quotes. Each can include line items, contact details, account codes, tax types, and PDF attachments. Records are created as drafts in Xero for review before approval.
Is Ping Ledger officially affiliated with Base44?
No. Ping Ledger is an independent product that happens to be built on the Base44 platform. It is not officially partnered with, endorsed by, or affiliated with Base44.
Is Ping Ledger affiliated with Xero?
No. Ping Ledger is an independent integration tool that uses Xero’s public API. It is not affiliated with, endorsed by, or officially partnered with Xero.

Ready to connect Base44 to Xero?

Request access and we’ll set up your Ping Ledger bridge — no Xero API integration to build or maintain.