A practical guide to building a resilient multi-tool AI agent using Gemma 4 and Python, focusing on error recovery patterns. Covers structuring an iterative agent loop with a safety cap, handling four categories of tool failures (domain errors, malformed tool calls, type drift, and unavailable services), and designing informative error messages that help the model self-correct. Demonstrates graceful degradation with cached fallbacks and shows how the message history serves as the agent's state across iterations.

12m read timeFrom machinelearningmastery.com
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Table of contents
IntroductionRethinking the Tool LoopBuilding the Tool RegistryPutting It All TogetherConclusion

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