Say it back

A human gives one instruction. The scheduler agent turns it into a typed line, the payer agent reads it back with the account it looked up, and a program checks every exchange before the money moves, then checks what the tool actually did. Plant a mistake and watch where it is caught.

On this page the two agents follow a script. Every check is a live call to this service: /check-ho, /check-rb, /digest and /check-dn, the same calls any agent can make. With the second switch on, the payment tool prepares the payment first and prints its own statement of what it will do; that statement, not the agent's intention, is what the checker checks, and the tool will not pay until the checker says yes. That is the window of study 7.