NetworksResource

Access via urblock.networks.

Query supported blockchain networks, including chain IDs, explorer URLs, and fhEVM capability metadata.

Methods

list()

List all supported networks (mainnet and testnet).

const networks = await urblock.networks.list();

for (const net of networks.data) {
  console.log(`${net.name} (chain ${net.chain_id}) — ${net.is_testnet ? "testnet" : "mainnet"}`);
}

Returns: ListResponse<NetworkResponse>

---

retrieve(id)

Get a single network by ID.

const network = await urblock.networks.retrieve("net_polygon_amoy");
console.log(network.name);         // "Polygon Amoy"
console.log(network.chain_id);     // 80002
console.log(network.explorer_url); // "https://amoy.polygonscan.com"
console.log(network.is_testnet);   // true
console.log(network.is_fhevm);     // false

Returns: NetworkResponse

Field	Type	Description
id	string	Network ID (net_...)
name	string	Human-readable network name
chain_id	number	EVM chain ID
explorer_url	string	Block explorer base URL
is_testnet	boolean	Whether this is a test network
is_active	boolean	Whether the network is currently enabled
is_fhevm	boolean	Whether confidential fhEVM deploys are supported
gateway_url	string | null	fhEVM gateway URL when available
fhe_public_key	string | null	Optional network FHE public key metadata
coprocessor_url	string | null	Optional coprocessor service URL
confidential_factory_address	string | null	Confidential factory contract address
acl_address	string | null	fhEVM ACL contract address
coprocessor_address	string | null	fhEVM executor/coprocessor contract address
kms_verifier_address	string | null	fhEVM KMS verifier contract address

See Also

• Networks API — full endpoint reference
• Testnet Onboarding Guide — get started on testnet