5. eth_chainId

caution

This documentation is for using our Bundler API directly. If you are building with the Biconomy SDK you can follow the instructions on this page.

info

You can get your Bundler URL from the Biconomy Dashboard. This is the same endpoint URL used for all requests. All requests must follow the JSON RPC specifications.

This endpoint returns EIP-155 Chain ID

Parameters

Body

Param	Type	Description	Required
method	string	Name of method in this case: eth_chainId	Required
params	array	An empty array with no specific params	Required
id	string	id for request determined by client for JSON RPC requests	Required
jsonrpc	string	JSON RPC version in this case 2.0.0	Required

Request

{
    "method": "eth_chainId",
    "params": [],
    "id": 1693369916,
    "jsonrpc": "2.0"
}

Response

{
    "jsonrpc": "2.0",
    "id": 1693369916,
    "result": "0xa4b1"
}