01Cap an agent at the purchasing authority of the person it acts for.
The tool list it receives is the intersection of its own grant and that requester’s permissions, so authority follows the person — not a single ceiling shared by the whole integration.
02Separate invoice entry from payment release.
The release action is left out of the agent’s grant, so no agent — and nobody acting through one — can carry a payment from entry to release alone.
03Restrict agents to approved accounts, entities, cost centers, and counterparties.
Allow-lists are enforced at the action layer; an unfamiliar counterparty or off-books entity fails before money moves.
04Require supporting documentation before an action can proceed.
Policy can demand the PO, contract, or receipt is attached and matched before the transaction posts.
05Prevent duplicate, unusual, or out-of-policy transactions.
Transaction-aware checks catch a second posting of the same invoice or an amount outside pattern before it executes.
06Keep the irreversible actions out of the grant altogether.
Releasing a payment and changing bank details are actions the agent is never given, so they never appear in its tool list and stay with a controller.
07Trace financial actions back to the request, the data, the agent, and the person it acted for.
Every posted transaction carries its full lineage, so reconciliation questions end at the record instead of an email thread.