Changelog

Stay up to date with the latest API changes, new features, and deprecations.

New Feature4.3.0February 15, 2026

AI Caller API Beta

New API endpoints for managing AI-powered customer calling.

  • Added POST /api/v2/business/{id}/ai-calls to initiate AI calls
  • Added GET /api/v2/business/{id}/ai-calls for call history
  • New webhook event: ai_call.completed
  • Call transcripts available via GET /api/v2/ai-calls/{id}/transcript
Bug Fix4.2.1February 9, 2026

Fixed phoneNumber in createRequestV4

The phoneNumber field was not being populated in the response body.

  • Fixed: POST /api/v4/requests now returns customer.phone in the response
  • Applies to both new and existing requests
New Feature4.2.0January 28, 2026

Booking Confirmation Webhooks

New webhook events for real-time booking status updates.

  • New event: booking.confirmed — fired when customer confirms appointment
  • New event: booking.cancelled — fired on cancellation by either party
  • New event: booking.rescheduled — includes old and new timestamps
  • Booking events include full appointment details and customer contact info
Improvement4.1.1January 16, 2026

ProblemDetails Error Format

Error responses now follow RFC 7807 ProblemDetails standard.

  • All error responses include traceID for debugging
  • Structured errors array for validation failures
  • Consistent error format across all endpoints
  • Legacy error format still supported via Accept header (deprecated Q3 2026)
Improvement4.1.0January 13, 2026

Requests API Documentation Refresh

Major update to Requests API documentation with new examples.

  • Updated all code examples to use v4 endpoints
  • Added targeting-specific-businesses guide
  • New request lifecycle documentation
  • Added rate limiting details for high-volume partners
Breaking Change4.0.0December 15, 2025

Requests API v4

Major version update for the Requests API with breaking changes.

  • BREAKING: Requests API moved from v3 to v4 — update all endpoints
  • New required field: customer.phone in POST /api/v4/requests
  • Response format updated: matchedBusinesses is now a count, not array
  • v3 endpoints deprecated — sunset date: March 15, 2026
  • New: utmData field for attribution tracking
New Feature3.8.0November 20, 2025

Widget Theming Support

Embeddable widgets now support custom theming.

  • New URL parameters: theme, accent, border_radius, font
  • Light and dark mode support
  • Custom accent colors via hex codes
  • Google Fonts integration for typography
New Feature3.7.0October 5, 2025

Reviews API Enhancements

New endpoints for review management and responses.

  • New: POST /api/v2/business/{id}/reviews/{id}/response
  • New: Review summary with rating distribution
  • Sort options: recent, highest, lowest
  • Pagination support added
Deprecation3.6.0September 1, 2025

Deprecation: Legacy Pro API

The legacy pro-api.thumbtack.com endpoints are officially deprecated.

  • All partners must migrate to developers.tasknation.com APIs
  • Legacy endpoints will return 301 redirects starting Jan 2026
  • Full shutdown: April 1, 2026
  • Migration guide available in docs