Rex Real Estate CRM

Rex API Integration

Rex holds your listings, your agents and your enquiries. The website has to show all three, stay current when an agent changes a price from their phone, and not fall over on a Saturday morning. This is how we connect the two.

How the Rex API works

  • Authentication. Rex issues credentials per account and returns a session token you pass on each call. Tokens expire, so the integration has to refresh and retry rather than assume a long-lived key.
  • It is RPC, not REST. Calls are POSTed to service endpoints such as Listings::search and Contacts::search, with criteria and paging in the body. If your team is expecting plain REST resources, allow a day for the shape of it.
  • Paging and rate limits. Result sets are paged and throttled. A full portfolio sync belongs in a background job, never inside a page request.
  • Images. Listing images come back as URLs on Rex storage. We pull them at sync time and serve resized, modern formats from your own CDN, so a slow origin cannot drag down your Core Web Vitals.

How we build it

  • Sync, do not proxy. We mirror listings into the site's own data layer on a schedule, with a webhook or short-interval poll for changes. Pages render from your database, so the site stays fast and stays up when the CRM is slow.
  • Status rules that match how agents work. Withdrawn, under offer, sold and off-market each need a rule for what shows publicly and how long a sold listing keeps its page. Getting this wrong is the most common reason an agent rings you on a weekend.
  • Search that never touches the CRM. Suburb, price band, bedrooms, land size and map bounds run against your own index, so filtering is instant and unmetered.
  • Enquiries written back to Rex. Web forms create the contact and the enquiry against the right listing and agent, so nothing lives only in an inbox.
  • Agent and office profiles. Pulled from Rex so a new agent appears the day they are added, with a manual override for bio and photo.

Two things that catch most teams

Deletions are easy to miss. If you only sync changed records, a listing removed in Rex lingers on the website, so reconcile the full ID set on a daily pass. And keep environments apart deliberately: a staging account will happily publish dummy listings to a live site.

For a typical agency site, the feed, search, agent profiles and enquiry sync take two to three weeks, assuming Rex credentials are ready on day one.

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