Your AI agent needs a brake pedal: stopping loops and runaway cost at runtime

Description and use

SteerPlane’s runtime safety layer limits infinite loops, cost, and forbidden actions, preventing costly agent failures.

Problem

AI agents can repeat steps endlessly, incur high API costs, or perform unintended destructive actions.

Outcome

Agents are prevented from looping indefinitely, exceeding cost ceilings, or executing forbidden actions, reducing costly failures.

Workflow

• 1. Import SteerPlane guard decorator. 2. Decorate agent function with max_cost_usd and denied_actions. 3. Run the agent; SteerPlane monitors cost and actions. 4. If cost exceeds limit or a denied action is attempted, the run stops.
• 5. Optionally set max_steps to limit iterations.

Evidence

It stops an agent that keeps repeating the same steps.

Source

It sets a hard cost ceiling per run.

Source

It allows or denies tool calls by rule.

Source