generated: '2026-07-18'
method: searched
source: https://docs.clusters.xyz/getting-started/api/v1/address-cluster-name + https://docs.clusters.xyz/resources/address-types
test_mode:
  mechanism: query-flag
  param: "testnet=true"
  description: >-
    Append ?testnet=true to query endpoints to resolve against testnet state
    instead of mainnet. Registration data endpoints accept testnet chain ids.
  network: Sepolia
testnet_networks:
  evm: ["11155111"]   # Sepolia (per registration network list)
  holesky: ["17000"]  # Holesky testnet (per registration network list)
notes:
  - Reads (resolution, availability, cluster lookups, events) require no credentials, so they can be exercised directly against production for integration testing.
  - No published test cards or magic test identifiers exist; Clusters is an on-chain naming protocol, so "test mode" means testnet chains, not synthetic fixtures.
  - Wallet-authenticated writes require a real EVM/Solana signature; there is no hosted sandbox signer.