Devin Cursorrules — Turn Cursor into an AI Engineer

Devin Cursorrules — How It Works

Core Capabilities

1. Automated Planning & Self-Evolution

The AI creates a structured plan before writing code, tracks progress in scratchpad.md, and updates its strategy as it learns from the codebase. Unlike vanilla Cursor, the agent thinks step-by-step and adapts its approach.

2. Extended Tools

The tools/ folder adds capabilities beyond basic code editing:

• Web browsing — Fetch and analyze web pages
• Search engine integration — Look up documentation and solutions
• Screenshot verification — Use Playwright to visually verify UI changes
• LLM analysis — Send data to external LLMs for deeper reasoning

3. Multi-Agent Collaboration

Optional setup where:

• o1/o1-pro handles high-level planning and strategy
• Claude/GPT-4o executes the plan and writes code
• Agents communicate through shared scratchpad files

4. Self-Correction

When you correct the AI ("no, use X instead"), it records the feedback and avoids the same mistake in future interactions within the session.

File Structure

.cursorrules           # Cursor AI configuration rules
.windsurfrules         # Windsurf equivalent
scratchpad.md          # Planning & progress tracking
.github/
  copilot-instructions.md  # GitHub Copilot config
tools/
  browser.py           # Web browsing capability
  search.py            # Search engine integration
  screenshot.py        # Playwright screenshot verification
requirements.txt       # Python dependencies

Supported Editors

FAQ

Q: What is devin.cursorrules? A: A configuration that gives Cursor/Windsurf Devin-like AI capabilities — automated planning, self-correction, web browsing, and multi-agent collaboration — for free.

Q: Is it free? A: Yes, MIT license. You only pay for the AI model tokens used by your editor (Cursor/Windsurf subscription).

Q: How is this different from vanilla Cursor? A: Vanilla Cursor responds to individual prompts. With devin.cursorrules, the AI plans multi-step tasks, tracks progress, browses the web for context, verifies UI changes with screenshots, and learns from corrections.