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Buildyourowncodingagent

Teaches building a production-grade AI coding agent from scratch in pure Python, covering the brain, tools, memory, and loop.

A technical book that teaches developers to build a production-grade AI coding agent from scratch using pure Python and a single file, avoiding black-box frameworks. It targets software developers and engineering teams who want to understand and control AI agent internals. The book is positioned as a pragmatic, code-first alternative to complex frameworks, emphasizing debuggability and simplicity.

Key features

  • 12 chapters from Hello World to game-building AI
  • Covers Claude, DeepSeek, and Ollama providers
  • Includes full test suite with pytest
  • Builds a complete Snake game in Chapter 12
  • Provides FakeBrain test double for offline testing
  • Source code available on GitHub
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  • Software developers
  • Engineering teams
  • Startups