IXRAILFIELD NOTES
Notes on agents, authority, and payment systems.
Technical essays about building useful autonomy without collapsing control.
The payment rail is the permission system
Why autonomous purchasing requires an authority boundary beyond wallet custody.
Treat HTTP 402 as a negotiation
A practical model for resolving price, asset, network, and policy before settlement.
Receipts are part of control
Decision evidence should be produced during execution—not reconstructed after it.