When Your Tool Returns Garbage, Agents Loop Forever. Here's the 30-Line Guard.

📰 Dev.to · Gabriel Anhaia

Learn to prevent infinite loops in agents caused by malformed data with a simple Python guard

intermediate Published 24 May 2026
Action Steps
  1. Identify potential sources of malformed data in your system
  2. Implement a try-except block to catch JSON decoding errors
  3. Add a retry limit to prevent infinite loops
  4. Configure your agent to return an error when the retry limit is exceeded
  5. Test your guard with sample malformed data to ensure it works as expected
Who Needs to Know This

Developers and DevOps teams can benefit from this to prevent budget burns and improve system reliability

Key Insight

💡 Malformed data can cause agents to loop forever, but a small guard can prevent this and save your budget

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🚨 Prevent infinite loops in agents with a simple Python guard! 🚨

Key Takeaways

Learn to prevent infinite loops in agents caused by malformed data with a simple Python guard

Full Article

A tool returns malformed JSON. Your agent retries, retries, retries, and burns your budget. A tiny Python guard catches it before the model spirals.
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