AI PAYMENT THREAT · AUTHORIZATION-TO-EXECUTION GAP
Mediate the AI-payment authorization-to-execution gap
A policy ALLOW is not enough when agent code, tools, workers or retries can change what reaches the payment provider afterward.
Where the failure appears
Between a detached preflight ALLOW and the provider call, another component can replace the payee, amount, resource or request body; concurrent workers can race; and an ambiguous provider response can cause a blind retry. A policy decision and post-hoc logs do not by themselves mediate that transition.
Who needs the control
Teams with existing Stripe PaymentIntent or supported x402 EIP-3009 execution code that can isolate credentials behind one exclusive executor.
Execution-time response
- Verify account-pinned signed authority for the final normalized purchase and reserve both mandate and attached shared-budget headroom.
- At a credential-isolated execution service, CONSUME the decision with the exact provider, payee, amount, resource and request binding.
- Redeem the short permit online; only the fresh atomic claimant receives MandateShield permission. The exclusive executor must still make one idempotent downstream operation.
- Report the stable submission and keep authority fail-closed until a configured Stripe lookup or canonical x402 chain check establishes the terminal outcome without trusting the caller assertion. If strong evidence never arrives, UNKNOWN can remain reserved.
Relevant controls
What changes
On the supported paths, the authorization remains linked to one exact provider attempt instead of becoming a reusable ALLOW that downstream code must interpret correctly.
Reproduce the failure safely
Change a sample amount, seller, consent field or instruction and inspect the structured decision before integrating.
Test the threat free →