API Overview
This API lets you manage your data in the system from your own application. Connect your backend so your tools stay in step with your workspace without doing every task in the web UI.
Quickstart by area
Contacts
Paginated lists, filters, single and bulk create, update, and delete.
Contact groups
List and manage groups, then add or remove members in bulk.
Authentication
Use API keys from the GUI as Bearer tokens on each request.
Rate limits & errors
JSON response shape and sample error bodies.
Authentication
Send an API key from the GUI as a Bearer token on each call. See Authentication & Bearer Token for setup and samples.
Authorization header
Authorization: Bearer {API_TOKEN}