Follow the effect.
Explore the boundary between preparation, authority, a monetary state transition and an external payment.
Make the transition explicit.
- Prepare
Identify the intent, transaction and selected preflight contract.
- Admit
Bind authority, budget, expected state and replay conditions.
- Verify the effect
Require the actual caller's receipt and a defined recovery path.
For wallet integrators, financial-platform engineers and operators defining one critical workflow.
Where the boundary sits
Wallet preflight, a checked monetary state transition, custody, signing, broadcast and external settlement are different operations. The public site does not process a customer payment. A pilot must select the actual writer and destination, with success, refusal, retry and interruption evidence.