Setting agent spend limits is mostly about matching the cap to the provider's pricing and the use case's risk profile. These pages give concrete starting-point limits for OpenAI and Anthropic agents and a use-case matrix so you don't start from a blank page.
Anthropic Claude agents using tool use need spend limits on tool-call transactions. This guide covers recommended limits per tool type.
OpenAI agents using the Responses API or function calling need spend limits configured externally. This guide covers recommended limits and how to enforce
Recommended per-transaction, daily, and velocity limits for common AI agent use cases: coding agents, research agents, support bots, trading bots, shopping
A per-agent limit is the agent's own budget — a ceiling it can't exceed regardless of what it's doing.
A monthly limit is the budget envelope for the month — best used as the outer layer above daily caps.