In order to use the Betting API, you need to have an Application Key. The Application Key identifies your API client. Two App Keys are assigned to a single Betfair account, one live App Key and one delayed App Key.
You must pass the Application Key with every HTTP request. You do this by setting the HTTP header with the value of the key assigned by Betfair.
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- The delayed App Key returns delayed price data and does not allow betting transactions to be performed (placeOrders,replaceOrders,updateOrders, cancelOrders)
- The delayed App Key should be used for development and any functional testing that doesn't require the use of live data and betting functionality.
- The delayed App Key should also be used in simulation/practice applications where the facility to bet into live Betfair markets is not available.
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