Handling authorization state drift during agent-to-tool transitions (Architecture Lab)

[Yared Mengistu (yaredmengistu04-arch)]

Hi everyone,

While building agentic workflows using external tools, I’ve been looking into how we handle authorization state drift. Traditional authorization checks a policy at ingress, but if a model manipulates parameters or switches sinks during an agent-to-agent or agent-to-tool transition, the executed act no longer maps to the approved intent.

To explore a solution, I've put together an early-stage architectural framework called APC (Action • Proof • Control). It is designed to bind governing security contracts to exact acts and validate them right before the side-effect execution boundary.

Note: This is an early reference implementation and is NOT production-ready or commercial-grade. It is strictly a design validation lab right now.

I’ve hosted a local technical evaluation playground where you can test how signed protocol envelopes handle parameter mutations and transition ordering failures locally in the browser:
https://alephapc.com

I would value your thoughts on how this hooks into current tool invocation lifecycles. Does this capture the edge cases you are seeing with tool-mediated control-flow hijacking, or does it over-complicate the execution boundary?