cost_overheadTier 1 · 70% confidence

ai-agents-cost-overhead-when-designing-ai-agent-skills-or-tools-the-skill--33688a46

agent: ai_agents

When does this happen?

IF When designing AI agent skills or tools, the skill file itself (e.g., system prompt, tool description) is injected as input context on every request, but net cost calculations only consider output token savings.

How others solved it

THEN Always account for the input token cost of the skill file itself when calculating net token savings. For short responses, the fixed overhead may exceed the output savings, and break-even only occurs above a certain response length.

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