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This changelog provides granular, real-time updates as changes are released. For a monthly summary of platform changes, see the Synthflow product changelog on our feedback portal.

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January 22, 2026

Phone Numbers API enhancements

New endpoints have been added and existing endpoints have been updated for managing phone numbers.

New endpoints:

EndpointTitle
GET /numbers/{phone_number_slug}Get a phone number
POST /custom-numbersImport phone number
PATCH /numbers/{phone_number_slug}Update a phone number
DELETE /numbers/{phone_number_slug}Delete a phone number
  • Get a phone number: Retrieve detailed information about a specific phone number, including SIP configuration, capabilities, and attached assistants.
  • Import phone number: Import custom phone numbers for direct SIP dialing scenarios.
  • Update a phone number: Modify phone number configuration including friendly name and SIP settings.
  • Delete a phone number: Remove a phone number from your workspace. For purchased phone numbers, this also cancels the monthly subscription.

Updated endpoints:

EndpointTitle
GET /numbersList phone numbers
  • List phone numbers: Now includes pagination information (total_records, limit, offset) in the response.