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Getting Started

API Changelog

As we make changes to our API, we’ll publish below. Changes to the product itself will be published on Product Updates.

June 25, 2025
June 25, 2025
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Field Enrichment API

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lead_id is now optional when creating a Contact or Opportunity

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WhatsApp Messages API

We have added support for WhatsApp Messages as a new activity type. This allows integration partners to sync WhatsApp messages into Close, enabling viewing of ongoing WhatsApp conversations within the CRM.

Important: WhatsApp messages can only be synced into Close for viewing and tracking purposes. Close does not send WhatsApp messages directly - actual sending must be done through WhatsApp apps or other third-party WhatsApp platforms.

The new API includes:

  • Support for syncing inbound and outbound WhatsApp messages
  • File attachment capabilities (up to 25MB total per message)
  • Integration links to connect back to external systems
  • Thread support via the response_to_id field to track message replies

We also introduced new events activity.whatsapp_message.created, activity.whatsapp_message.updated, and activity.whatsapp_message.deleted, which you can subscribe to using webhooks.