Show HN: AgentGuard – Auto-kill AI agents before they burn through your budget https://ift.tt/vqfKSI8

Show HN: AgentGuard – Auto-kill AI agents before they burn through your budget Your AI agent hits an infinite loop and racks up $2000 in API charges overnight. This happens weekly to AI developers. AgentGuard monitors API calls in real-time and automatically kills your process when it hits your budget limit. How it works: Add 2 lines to any AI project: const agentGuard = require('agent-guard'); await agentGuard.init({ limit: 50 }); // $50 budget // Your existing code runs unchanged const response = await openai.chat.completions.create({...}); // AgentGuard tracks costs automatically When your code hits $50 in API costs, AgentGuard stops execution and shows you exactly what happened. Why I built this: I got tired of seeing "I accidentally spent $500 on OpenAI" posts. Existing tools like tokencost help you measure costs after the fact, but nothing prevents runaway spending in real-time. AgentGuard is essentially a circuit breaker for AI API costs. It's saved me from several costly bugs during development. Limitations: Only works with OpenAI and Anthropic APIs currently. Cost calculations are estimates based on documented pricing. Source: https://ift.tt/1aNCKqw Install: npm i agent-guard https://ift.tt/1aNCKqw July 30, 2025 at 10:54PM