An agent moves money using an amount pulled from context without re-checking it against the invoice or source of truth — so a stale, wrong, or manipulated figure gets paid.
This is exactly the class of action that’s cheap to prevent and expensive to undo — rollback, insurance, and observability all kick in after the damage is done. The only place to stop it is a check that runs before the action does.
An accounts-payable bot wires the figure from an old email thread instead of the current invoice, paying 10× the real total.
Black_Wall raises AMOUNT_UNVERIFIED when a payment amount isn’t backed by a fresh source-of-truth check, and gates the transfer for confirmation before it clears.
Black_Wall returns a risk score (0–100), a reversibility class, this named red flag, and a gate — proceed / confirm / human-required — in a few seconds, before the action runs.
Paste an action your agent might take and watch Black_Wall gate it — no signup.