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Peter Belcak

Agent Design Patterns by Peter Belcak is about moving beyond one-off prompts and treating agents as systems that can be designed, tested, and improved. It introduces reusable patterns for common challenges in agent development, particularly around capability, reliability, and robustness.

The book takes a practical approach. Peter builds a mortgage advisor to demonstrate how the patterns work together, then explores individual patterns such as:

• Errand, for breaking complex workflows into manageable units
• Guardrail, for gating actions and improving reliability
• Resampler, for using repeated sampling to produce more dependable results

Five chapters are currently available through Manning’s Early Access Program. Readers can follow the book as Peter writes it, receive new chapters when they’re released, and send feedback that may help shape the finished book.

If you’re already experimenting with agents, I’d be interested to hear which design problems have caused you the most trouble. For me, the gap between an impressive demo and an agent you can actually depend on is where this topic gets particularly useful.

• Full details: Agent Design Patterns - Peter Belcak

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