AI & Automation

AI Agents in Production: Handling Hallucination, Rogue Actions, and Prompt Injection

An agent that can act, not just answer, needs real guardrails. Here's what actually happens when it's wrong, and how prompt injection gets handled before it's a problem.

AEArchiom Engineering·July 2026·9 min read

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An Agent Is Not a Chatbot With Extra Steps

A chatbot answers one question at a time. An agent plans a sequence of actions across multiple tools — look something up, decide what it means, take an action, check the result — which is a genuinely different kind of system, and a genuinely different kind of risk, because a wrong step early in the chain can compound by the end of it.

What Happens When It's Wrong

⚠️“What happens when the AI gives out wrong information or promises something we can't deliver?” This is designed against, not hoped against. Anything with real business consequences — a commitment, a price, a promise — goes through an approval checkpoint before it reaches a customer. The agent proposes; a scoped rule or a person confirms before it's final.

⚠️“I'm scared of the AI going rogue and hallucinating.” Scoped permissions are the actual answer to this, not a promise that the model never makes mistakes — because it will, eventually, the same way any system does. The agent only has access to the specific tools and actions it's been explicitly granted, so a mistake stays contained to what it's actually allowed to touch, and nothing more.

Approval checkpoints on anything customer-facing or financially binding.
Scoped, explicit tool permissions — never blanket access to every system it could theoretically reach.
Logging on every action taken, so a mistake is traceable to exactly where it happened.

Prompt Injection Is a Real Attack, Not a Hypothetical

⚠️“How do you handle prompt injections?” Anything that reads external text — an email, a document, a webpage the agent fetches — is a potential injection vector, and it gets treated that way from the design stage, not patched in after an incident. Untrusted input is never given the same authority as an explicit instruction from an authenticated user.

Untrusted content (emails, documents, scraped pages) is treated as data, never as instructions the agent should follow.
Tool access stays scoped and permissioned regardless of what the agent reads.
High-impact actions require the approval checkpoints above, which also contain the blast radius of a successful injection attempt.

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