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Context Engineering vs Prompt Engineering: How to Diagnose Agent Failures

An agent fails to integrate your API. Someone rewrites the prompt, reruns it, and it passes. A week later it fails the same way, and nobody can say whether the cause was the instruction, an outdated docs page, a noisy tool result, or a tool the agent did not know how to use. Prompt engineering is w…

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  1. 2026-11-11 17:53 · DEV Community — AI
    Context Engineering vs Prompt Engineering: How to Diagnose Agent Failures

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