The Developer Sandbox replicates core v2 API functionality with an automated system that uses test fund to simulate normal activities, including a few Sandbox-only endpoints.
To start using the Sandbox environment, create a Developer account.

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Sandbox Testnets and Devnets

When you use Create Sandbox Deposit to fund a Profile, the platform creates the asset on the testing network. The asset can then be transferred to any off-platform address that supports the test network. Similarly, when using create a deposit address in Sandbox, the generated address can be used to transfer test assets to the Paxos platform.
Crypto NetworkSupported Testnet/Devnet
Arbitrum OneSepolia
BitcoinTestnet3
Bitcoin CashTestnet
EthereumSepolia
LitecoinTestnet
Polygon POSSepolia
SolanaDevnet

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Sandbox Identity Testing

When testing the Identity APIs in Sandbox, you may be blocked by a verification process. If this is the case, use Sandbox Set Identity Status to change id_verification_status and sanctions_verification_status to “APPROVED”and enable an individual identity to transact during Sandbox testing. To enable the Institution to transact during Sandbox testing, set sanctions_verification_status to \"APPROVED".

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Sandbox Fiat Transfer Testing

To test Fiat Transfers API in Sandbox, the Initiate Sandbox Fiat Deposit endpoint starts test fiat deposit that will be processed based on the memo_id from a previous Fiat Deposit Instructions response. Learn more in the Fiat Transfer Guide.
When creating API credentials via the Dashboard, the transfer:write_sandbox_fiat_deposit scope may not appear in the UI. Including the scope when authenticating may result in an invalid_scope error. Contact Support if you run into any issues using this scope.