Guarding a support agent's tool calls: provenance, a customer's yes, written gates and a backend that teaches
An LLM agent with tools is a model whose outputs have side effects. "Cancel order #W9034102" is a fine thing to say and a bad thing to do when the order belongs to someone else and the instruction came from a note inside a tool result. This post puts solvi.Guard between a retail support agent and its tools, adds a written policy as hard gates and a knowledge store that learns what the backend…
An LLM agent with tools can propose actions, such as cancelling an order, but a guard decides whether to allow, deny, or escalate. The guard checks provenance, ensuring the order ID belongs to the customer, and executes a policy that the customer can cancel only their own orders. If the order is delivered, the guard denies the cancellation. The guard stores decisions for traceability.
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