Yes
No
x-api-key: ********************
curl --location --request GET 'https://api-testnet.predict.fun/v1/markets//orderbook' \ --header 'x-api-key: <api-key>'
{ "success": true, "data": { "marketId": 0, "updateTimestampMs": 0, "asks": [ [ 0 ] ], "bids": [ [ 0 ] ] } }