Alcor Exchange has HTTP and WebSocket api.
Alcor Exchange provides an API for the UI view reasons charts/lates deals/orderbook. etc.
But as Alcor is DEX any intereation with blockchain, such as new order or order cancel, requires work with blockchain node api directly. Some examples can be found in "None API" page.
HTTP API URL are separated by chains using following structute:
chain_name: Name of chaing api to interact with.
4. eos (default, no need chain_name to specify)
WebSocket endpoint uses the same structure but has /socket.io/ at the end, example: