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Build property software that connects directly with Quardlyn.

Synchronise properties through the production CRM API, manage listings, upload media, track lifecycle changes and test outbound webhook simulations in sandbox. Available in minutes.

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Latest API Version
v1.0
API Status
Operational
Supported
Property CRM integrations
Changelog
CRM API v1 public baseline

Rate Limits

Open Console Limits

Rate-limit counters are tracked in the Developer Console usage screens. The API returns 429 rate_limited when a key/application exceeds its configured allowance.

Limit TypesBurst, daily and monthly counters are represented in usage summaries.
HeadersRetry-After is returned for rate-limited responses when available.
Best PracticeUse exponential backoff, avoid tight retry loops and send only changed fields for PATCH updates.