One file, one path: from x = 1 to shipping an async, typed, tested AI service that survives production.
Every example is drawn from the code AI engineers actually write β agent loops, tool registries, token streams, Pydantic schemas, FastAPI endpoints, pytest suites. No foo/bar filler.
Companion reads: πΉ Golang for AI Developers (the sibling to this guide), ποΈ Building High-Quality AI Agents, π The Agentic Loop Guide, π’ Enterprise-Ready AI Agents.
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