create-rule
Create Rule
Guide for creating effective .claude/rules files with contrastive examples that improve agent accuracy.
Overview
Core principle: Effective rules use contrastive examples (Incorrect vs Correct) to eliminate ambiguity.
REQUIRED BACKGROUND: Rules are behavioral guardrails, that load into every session and shapes how agents behave across all tasks. Skills load on-demand. If guidance is task-specific, create a skill instead.
About Rules
Rules are modular, always-loaded instructions placed in .claude/rules/ that enforce consistent behavior. They act as "standing orders" — every agent session inherits them automatically.
What Rules Provide
- Behavioral constraints — What to do and what NOT to do
- Code standards — Formatting, patterns, architecture decisions
- Quality gates — Conditions that must be met before proceeding
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