Networks
Understand network-specific balances, permissions, and transaction status.
An account operates on a specific blockchain network for each transaction. The network determines which balances, contracts, permissions, and activity apply to that operation.
Supported Networks
Namera supports these EVM mainnets and testnets:
| Mainnet | Testnet |
|---|---|
| Ethereum | Ethereum Sepolia |
| Base | Base Sepolia |
| Arbitrum One | Arbitrum Sepolia |
| OP Mainnet | OP Sepolia |
All eight use ETH as their native gas currency. Testnet ETH is separate from mainnet ETH. Use a testnet, such as Base Sepolia, when trying a new integration.
For the exact identifiers used in code, see Supported Networks in the SDK.
Balances Belong to a Network
ETH held on Base is not an Ethereum balance. Selecting another network does not move or bridge assets, even if the account address looks the same.
A token's symbol is not enough to identify it. Check its network and contract address, and check the recipient's network before funding an account or sending assets. A contract address on one network does not imply the same contract exists on another.
Permissions Are Installed per Network
A session key needs owner-approved installation on every network where it will operate. An installation on Base does not authorize Ethereum or Base Sepolia.
Each installation has its own status and approved authorization. The key can be active because one installation succeeded while another is still pending. Check the requested network, not only the key's overall status.
Removing installed permissions is also network-specific. Revoking access through Namera starts the cutoff, but onchain removal must finish on each installed network. See Session Keys.
Transactions and Gas
Gas pays for execution on the selected network. Sponsorship, when available, covers gas; it does not supply the ETH or tokens you intend to transfer. Self-funded execution requires sufficient native currency for gas as well as any amount being sent.
Transactions have their own submission and confirmation state. Check activity and explorer links on the network used by the operation.
If Namera pauses a supported network, new operations can be rejected while status checks remain available. A pause is not cancellation of an operation already signed or submitted.