flutter_flutter/docs/rules

AI rules for Flutter

This directory contains the default set of AI rules for building Flutter apps, following best practices.

• rules.md: The comprehensive master rule set.
• rules_10k.md: A condensed version (<10k chars) for tools with stricter context limits.
• rules_4k.md: A highly concise version (<4k chars) for limited contexts.
• rules_1k.md: An ultra-compact version (<1k chars) for very strict limits.

Device & Editor Specific Limits

Different AI coding assistants and tools have varying limits for their "rules" or "custom instructions" files. Last updated: 2026-01-05.

| Tool / Product | Rules File / Feature | Soft / Hard Limit | Notes & Sources |

Tool / Product	Limit	Source	Notes
Aider	No Hard Limit	Aider Conventions	Limited by model context window.
Antigravity (Google)	12,000 characters (Hard)	Internal Source	Validated via client-side error message.
Claude Code	No Hard Limit	Claude Code Docs	Uses CLAUDE.md. Context limited.
CodeRabbit	1,000 characters (Hard)	CodeRabbit Docs	Applied to "Instructions" field.
Cursor	No Hard Limit	Cursor Docs	Keep rules under 500 lines
Gemini CLI	1M+ Tokens (Context)	Vertex AI Docs	Pactical limit is model context window.
GitHub Copilot	~2 Pages (Soft) / 4k chars	Copilot Docs	Chat: ~2 pages context. Code Review: 4000 char hard limit.
Goose	No Hard Limit	Goose Docs	Uses "summarize" or "truncate" context strategies.
JetBrains AI	No Hard Limit	JetBrains AI Docs	Context managed by AI Assistant; no fixed file size limit.
OpenAI (ChatGPT)	1,500 characters	OpenAI Help	Is there a character limit for custom instructions?