The AI Bug Taxonomy: Hallucinations & Phantom APIs

Prerequisite: Familiarity with the concepts introduced in Part 2 — Context Engineering Codebase. Review it first if the terminology in this part is unfamiliar. Part 3 — The AI Bug Taxonomy: Hallucinations & Phantom APIs Answer-first: AI-generated code introduces a unique class of subtle defects distinct from traditional human coding errors. Understanding the AI Bug Taxonomy—encompassing Phantom API methods, Typosquatted Package Imports, Silent Type Coercions, and Logical Edge-Case Hallucinations—allows engineering teams to construct targeted AST static analysis filters that catch 95% of AI defects before code reaches production. ...

May 26, 2026 · 7 min · Lê Tuấn Anh