Six Bugs That Taught Me How to Build an AI Agent That Doesn't Fall Over

Automated excerpt

Building the demo version took a weekend. Two duplicate tool calls, two live sessions The model occasionally emits the same tool call twice in a single turn — once on a first pass, once on what looks like a retry. Once, it wasn't: two near-simultaneous calls to a "launch session" tool spun up two concurrent audio sessions on the same physical device. One shared API key, two features starving each other Two unrelated features shared a single provider API key. The fix: every paid call now sits behind a budget ceiling tracked per feature, not per account.

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