Thumbtack Pro API
Supply-side ("Supply Partner") integration surface launched 2021 (first partner GoSite) letting business-workflow platforms manage a pro's Thumbtack leads and messages alongside their other customer communications - two-way lead messaging, business profile and targeting-preference management, review notifications, business phone numbers for call attribution, and job status signals. Thumbtack calls partner-implemented webhook-style endpoints (lead, message, lead update, review) and partners call Thumbtack's OAuth 2.0-protected endpoints with a bearer token obtained via the partner-connect authorization code flow. Approval required.