Your agent reads tool descriptions the way it reads the prompt. One shop rewrote them. Here is the budget gate that does not.
A developer on dev.to, gramli, built a small Angular e-shop that exposes ten WebMCP tools, hid one instruction inside one of those tool descriptions, and ran a three-model agent through the checkout five times. The result that matters is scenario five. The instruction did not tell the agent to over…
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- 2026-11-10 12:46 · DEV Community — AI
Your agent reads tool descriptions the way it reads the prompt. One shop rewrote them. Here is the budget gate that does not.