Show HN: AgentFuse – A local circuit breaker to prevent $500 OpenAI bills

3 pointsposted 12 hours ago
by abdulbasitali

3 Comments

dmarwicke

11 hours ago

had this happen with a retry loop. hit $80 on anthropic before i caught it. how does this handle retries? seems like an agent could just keep retrying and blow past the limit

abdulbasitali

11 hours ago

That is exactly why we enforce a hard budget cap (default is $1.00).

The system runs a pre-flight check before every LLM call. If you're about to go over budget, it kills the process immediately (SentinelBudgetExceeded).

We don't have a specific "max retries" counter wired up yet, but I'll likely add that soon based on your feedback. For now, the budget cap would have caught it at $1.

abdulbasitali

9 hours ago

I just added loop detection based on your comment. It fingerprints tool actions (tool name + args) and kills the agent if it tries the exact same thing 5 times in a row.