Eth_newBlockFilter

Create a new block filter

post

Sends a JSON-RPC request to create a new filter that tracks new blocks. Returns a filter ID which can be used to query for new blocks using eth_getFilterChanges.

Authorizations

api-keyAuth

api-keystringRequired

Body

application/json

jsonrpcstringRequiredExample: 2.0

methodstringRequiredExample: eth_newBlockFilter

idintegerRequiredExample: 1

Responses

200

Filter ID created successfully

application/json

jsonrpcstringOptionalExample: 2.0

idintegerOptionalExample: 1

resultstringOptional

Filter identifier as a hex string

Example: 0x16

post/

HTTPcURLJavaScriptPython

POST / HTTP/1.1
Host: core.nownodes.io
api-key: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 66

{
  "jsonrpc": "2.0",
  "method": "eth_newBlockFilter",
  "params": [],
  "id": 1
}

200

Filter ID created successfully

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x16"
}