Starting next year, all UK firms using AI agents to move stablecoins will need to show that every payment was authorized and stayed within the limits the customer set. Unfortunately, that's not as easy as it sounds and introduces additional costs for these firms. Today's agent frameworks can log prompts, tool calls, and outputs. They cannot independently prove that an agent had permission to make a specific payment at the moment it happened. That requires a separate control layer to verify permissions, enforce limits, and preserve a reliable audit trail. It also adds compute, storage, latency, integration work, and ongoing compliance costs. The FCA already estimates its broader crypto regime will cost the average firm about £300,000 to implement and £100,000 a year to operate. Agent-specific controls would come on top of that. The model may end up being the cheapest part of deploying an AI agent in finance. Proving it acted within the rules could become the real cost. That is part of the core infrastructure @SaharaAI is building for its enterprise clients: a vendor-independent layer for policy enforcement and verifiable execution.