The latest articles on DEV Community by GEORGE KONNARIS (@george_konnaris_f9eb70683). https://dev.to/george_konnaris_f9eb70683 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3969553%2F650aad57-f002-42d5-857d-c9585a45a3fe.png https://dev.to/george_konnaris_f9eb70683 en GEORGE KONNARIS Fri, 05 Jun 2026 09:31:12 +0000 https://dev.to/george_konnaris_f9eb70683/i-built-a-circuit-breaker-for-ai-agents-after-hearing-about-a-400-overnight-api-bill-3hkk https://dev.to/george_konnaris_f9eb70683/i-built-a-circuit-breaker-for-ai-agents-after-hearing-about-a-400-overnight-api-bill-3hkk <p>A civil engineer showed me his API dashboard last month. His AI agent got stuck in an error loop overnight and burned $400 while he slept. No alerts. No kill switch. Just a bill in the morning.<br> That conversation stuck with me. So I built Taskora.<br> Here's how it works:</p> <p>You connect your OpenAI or Anthropic API key<br> Set a monthly spend limit in dollars<br> Get an email alert at 80%<br> Agents get hard-blocked at 100%</p> <p>The technical part was straightforward — a token ledger in Supabase, a middleware check before every agent execution, and a circuit breaker flag on the user profile that flips when the limit is hit.<br> The harder part was positioning. Is this a spend monitor? A kill switch? Cost protection? Still figuring that out.<br> If you run AI agents and have ever had a surprise bill, I'd love your feedback: taskora.eu<br> Building in public as an 18 year old. Happy to answer any questions about the technical implementation.</p> agents ai monitoring showdev