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API

To invoke smart contracts on the NEAR blockchain, we use a JSON RPC 2.0 interface. This interface is used by near-api-js to call on two types of methods; view and change.

view methods:

View methods do not effect the blockchain state and use the RPC query method with a param of request_type : call_function.

[ Click here ] to see an example of a call_function request.

change methods:

Alternatively, you can modify state on the blockchain by invoking a change method. To perform this RPC call, a signed transaction is required. This can be done either synchronously using broadcast_tx_commit or asynchronously via broadcast_tx_async.

[ Click here ] to see an example of a broadcast_tx_async request.

[ Click here ] to see an example of a broadcast_tx_commit request.

See here for more information about view and change methods.