make_seismic_testnet

Factory function for testnet chain configs

Factory function that creates a ChainConfig for a Seismic testnet node.

Overview

make_seismic_testnet generates a chain configuration for a GCP testnet node or a custom host. This is useful when you need to connect to alternate testnet nodes beyond the default SEISMIC_TESTNET (which is GCP node 1).

Definition

def make_seismic_testnet(
    n: int = 1,
    *,
    host: str | None = None,
) -> ChainConfig:

Parameters

Parameter	Type	Required	Default	Description
n	int	No	1	GCP node number
host	str | None	No	None	Custom hostname. Mutually exclusive with n

Raises ValueError if both n and host are provided.

Returns

• ChainConfig - A chain configuration for the specified testnet

Examples

Connect to Alternate GCP Nodes

import os
from seismic_web3 import make_seismic_testnet, PrivateKey

pk = PrivateKey.from_hex_str(os.environ["PRIVATE_KEY"])

# GCP node 1 (same as SEISMIC_TESTNET)
testnet_1 = make_seismic_testnet(1)
w3_1 = testnet_1.wallet_client(pk)

# GCP node 2
testnet_2 = make_seismic_testnet(2)
w3_2 = testnet_2.wallet_client(pk)

Custom Host

from seismic_web3 import make_seismic_testnet

testnet = make_seismic_testnet(host="my-testnet.example.com")
print(testnet.rpc_url)  # "https://my-testnet.example.com/rpc"

Default Parameter

from seismic_web3 import make_seismic_testnet

# No argument defaults to GCP node 1
testnet = make_seismic_testnet()

print(testnet.rpc_url)  # "https://gcp-1.seismictest.net/rpc"

Relationship to SEISMIC_TESTNET

The default SEISMIC_TESTNET constant is defined as:

SEISMIC_TESTNET: ChainConfig = make_seismic_testnet(1)

See Also

• ChainConfig - Chain configuration dataclass

• SEISMIC_TESTNET - Pre-defined testnet (GCP node 1)

• PrivateKey - Private key type