This XBID contract endpoint will return all the active contracts for XBID. Even though you can’t create orders with the contractId it will give you an indication when the contracts will be opened for trading.
Security
api-key
GET
curl -i -X GET \
'https://acc-trading.etpa.nl/public-api/1.0/xbid/active-contracts?deliveryArea=NL%20-%20TTN&product=QUARTER' \
-H 'api_key: YOUR_API_KEY_HERE'OK
Array [
]
Response
[ { "product": "string", "contractId": 0, "deliveryArea": { … }, "startTimeDeliveryPeriod": 1517406300000, "endTimeDeliveryPeriod": 1517406300000, "startTrading": 1517406300000, "endTrading": 1517406300000 } ]