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.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? |