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Building with AI

A builder’s path through APIs, prompting, retrieval, agents, and deployment choices including local models.

Developers and technical founders Reviewed:

Goal

Design an AI feature with APIs or local models, grounded retrieval, tool use, and basic safety controls.

Lessons

  1. 1 AI APIs Integration fundamentals.
  2. 2 Prompt systems Instructions as product code.
  3. 3 System prompts Developer steering layers.
  4. 4 Function calling Structured tool interfaces.
  5. 5 RAG systems Document-grounded answers.
  6. 6 Vector databases Indexing embeddings at scale.
  7. 7 Agents Multi-step tool use.
  8. 8 Injection defenses Secure untrusted content paths.
  9. 9 Local & open weights When to self-host.
  10. 10 Ship responsibly Lightweight governance for builders.

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