Coinvay’s merchant Sandbox provides an interactive checkout preview and separate Base Sepolia test payments. Preview states are simulated; real testnet payments are verified on-chain and stored separately from live invoices, revenue and plan usage.
Use preview for design and customer support
Open Sandbox in the merchant workspace and choose Checkout preview to explore the currency, payment-method, manual-instruction, waiting, success, expired and failure screens. The preview uses your merchant branding and sends no transaction. It is useful for checking terminology or explaining the flow to staff, but a simulated confirmation must not be used as evidence that a wallet or network integration works.
Use testnet mode for transaction verification
Save a Base Sepolia receiving address in the separate sandbox settings. Select test ETH or test USDC, choose a small token amount and confirm that you will use only testnet tokens. Coinvay creates a time-limited test checkout with an exact adjusted amount. A sender approves the transfer in their wallet, or pays manually and submits its hash. Verification checks the chain, successful receipt, canonical block, recipient, asset, exact quantity and required confirmations.
Know the isolation boundary
For example, a merchant can complete a test USDC checkout without consuming a live invoice allowance or creating a live sale. Optional sandbox webhooks use a different URL and signing secret, carry livemode false and are sent manually from test history. Keep the page open for polling or reopen it to verify a timely transfer by hash. Sandbox management requires an interactive session; live merchant API keys and the downloadable commerce kits are not automatically connected to these test endpoints.
Practical checklist
- Label test wallets and obtain free tokens for Base Sepolia, not a similarly named network.
- Verify the displayed exact amount, receiving address and three-confirmation requirement.
- Keep test webhooks and fulfillment effects outside the production order system.
Common questions
Can a preview success screen count as a test payment?+
No. It is an explicitly simulated visual state. A real testnet checkout must be confirmed using blockchain evidence.
Will test payments appear in live revenue or invoice usage?+
The new sandbox flow uses separate records and excludes them from live payment reporting and plan invoice usage.
Sources and further reading
Primary references and Coinvay product documentation. Check the linked pages for current details.
AI-assisted drafting, published by Coinvay. Examples are illustrative. Read our editorial approach.