Show HN: SafeAgent – exactly-once execution guard for AI agent side effects

I built a small Python library called SafeAgent that protects real-world side effects when AI agents re calls. One issue we ran into while experimenting with agent workflows is that retries can trigger irreversible actions multiple times: agent calls tool network timeout agent retries side effect happens twice Examples: • duplicate payment • duplicate email • duplicate ticket • duplicate trade Most systems solve this ad-hoc using idempotency keys scattered around different services. SafeAgent centralizes this into a small execution guard. The idea is simple: 1.