Part 3A: Advanced Context Engineering — Modular Cursor Rules & AGENTS.md
Answer-first: Advanced context engineering with path-scoped cursor rules structures repository knowledge into targeted hierarchical instructions matching glob patterns, preventing token window exhaustion and instruction shadowing by feeding coding agents only domain-specific constraints, architectural rules, and anti-corruption interfaces relevant to the active source file rather than flooding the prompt buffer with irrelevant monorepo files. Prerequisite: Familiarity with Cursor IDE configuration, glob pattern matching, and directory structure design in monorepos. 1. The Death of the Monolithic Prompt File In early AI coding setups, teams placed a massive 2,000-line .cursorrules file at the root of their repository containing every guideline imaginable: React component standards, Go concurrency patterns, SQL migration rules, and CSS styling guides. ...