Proprietary billing portals, SaaS tools, and internal database systems hold crucial invoicing records. We write secure API sync daemons that watch database tables and replicate data into Xero as approved invoices, with fail-safe error queuing.
Database Event Invoicing
When your proprietary billing portal inserts a record into your transaction database, our secure synchronization daemon intercepts this event, validates the data, generates the corresponding invoice in Xero, and logs the Xero Invoice ID back to your database as a cross-reference.
Rate-Limit Queue Management
High volume platforms easily exceed Xero's API daily limits. Our middleware uses smart queuing and request buffering, grouping transactions together and throttling database calls so you never drop invoices during peak billing days.
Security & OAuth 2.0 Management
Sync scripts require secure connection tokens. We build robust token refresh handlers that manage Xero's OAuth 2.0 authentication process automatically, keeping the database bridge connected 24/7 without manual intervention.
Frequently Asked Questions
Which databases do you connect to Xero?
We connect MySQL, PostgreSQL, MS SQL, MongoDB, MariaDB, and Oracle databases to Xero. We write custom node/python middleware scripts that poll or push data based on database events.
Can you handle volume invoicing without hitting Xero API limits?
Yes. Xero has strict API rate limits (e.g. 5,000 requests per day). We build queuing engines and batch processing middleware that bundle invoices, saving API requests and ensuring no syncs are dropped.
Where is the sync software hosted?
We typically host the sync middleware on secure UK cloud servers (AWS, DigitalOcean, or Vercel). We monitor the script continuously and manage security upgrades to ensure 100% uptime.