Read-only contract check

Policy Check

Test a charge against the live Tab on NEAR testnet. No wallet, no signature, no transaction. The contract remains the source of truth.

no wallet
tab-vault.testnet
This is a read-only simulation using the vault's public view calls. It never signs or sends a transaction. Vault balance and token transfer are re-checked by the contract at execution.

Load a Tab

Simulate a charge

Leave as the Tab's next nonce for a valid charge.
A real charge must also be signed by the Tab spender key. This page assumes that spender as the caller and sends nothing.
The real charge also checks the vault ledger and the NEP-141 transfer. Use /merchant to see a real settlement or /lab for the committed evidence.
Why this is not a mock

The page calls get_tab, get_remaining and get_balance on tab-vault.testnet. It applies the same checks the contract applies before a token call. It does not sign, send or mutate anything.