| Workflow | API |
| Discover connected inboxes and capabilities | Connections |
| Create, find, and update contacts | Contacts |
| Associate channel addresses | Contact identities |
| Start, list, read, resolve, and snooze conversations | Conversations |
| Send text, images, documents, audio, and video | Messages and media |
| Read delivery state and existing attachments | Messages and media |
| Transfer response ownership | Handoffs |
| Read and create internal notes | Notes |
| Start, read, control, and record voice calls | Calling |
| Authenticate customer chat | Contact sessions and customer messages |
| Subscribe to signed events, inspect attempts, replay failures, rotate secrets | Webhook endpoints and deliveries |
| Issue narrower credentials and revoke access | Applications and API keys |
/api/v2; the support app continues using its existing endpoints.