The Hidden Costs of Agent Tool Overload: Token Waste and Misfires
blaizedsouza · x · 2026-08-09
Developer @hanakoxbt highlights two hidden costs of giving an Agent too many tools:
- Token Rent: Tool schemas (descriptions, parameters, types, etc.) are sent with every request. Even unused tools consume thousands of tokens per call.
- Misfire Risk: When multiple tools have overlapping functionality (e.g., cancelorder vs. voidorder), the model chooses based solely on descriptions written months ago, highly increasing the chance of errors.
In the quoted article, he also shares a 6-step Eval Engineering course on building automated quality gates, allowing Agent code changes to merge securely without human review.
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