Please I want to ask if there is a documented REST API endpoints for web based voice call

Yes, Vapi has documented REST API endpoints for web-based voice calls. According to the information I found, Vapi provides several call-related endpoints including:

GET /api-reference/calls/list
POST /api-reference/calls/create
GET /api-reference/calls/get
DEL /api-reference/calls/delete
PATCH /api-reference/calls/update

These endpoints allow you to manage voice calls through Vapi's REST API [Vapi documentation](https://docs.vapi.ai/api-reference/blocks/create). Source: - [Vapi documentation](https://docs.vapi.ai/api-reference/blocks/create)

Yes, Vapi provides REST API endpoints for web-based voice calls, including creating calls (POST /call), retrieving call details (GET /call/:id), controlling live calls (POST /call/:id/control), and client-side web integration via the Web SDK.