If you have been using WindSurf’s AI rules configuration and want to switch to Cursor, or if you need to use both editors in your workflow, migrating your custom AI rules is essential for maintaining consistent coding assistance. This guide walks you through the complete migration process, explains the key differences between the two formats, and provides practical code examples to help you adapt your rules quickly.

Understanding the Two Rule Systems

Before diving into the migration process, it helps to understand how WindSurf and Cursor handle AI rules differently. WindSurf uses a JSON-based configuration system that defines AI behavior through rules files, while Cursor employs a YAML-based approach called.cursorrules that offers more flexibility and readability.

WindSurf rules typically live in a .windsurfrules file at your project root and define behavior through a structured JSON format. These rules control how the AI assistant interacts with your code, what context it considers, and what constraints it should follow. Cursor’s approach, on the other hand, uses .cursorrules files that can include YAML front matter followed by Markdown content, allowing for more natural language explanations alongside structured configuration.

The good news is that both systems aim to achieve similar goals: guiding the AI to understand your coding standards, project structure, and preferred patterns. With a systematic approach, you can convert your WindSurf rules to Cursor’s format without losing the nuanced behavior you have established.

Converting WindSurf Rule Structure to Cursor Format

The first step in migration involves mapping WindSurf’s JSON structure to Cursor’s YAML format. WindSurf rules typically include sections for preferences, context, constraints, and actions. Each of these needs to be translated to the appropriate Cursor equivalent.

Here is a practical example of how this conversion works. Suppose your WindSurf rules file contains preferences for code style and context settings:

{
  "preferences": {
    "indentation": "spaces",
    "indentSize": 2,
    "quoteStyle": "single",
    "trailingComma": true
  },
  "context": {
    "includeTests": true,
    "includeDocs": true,
    "maxFiles": 10
  },
  "constraints": {
    "maxLineLength": 100,
    "noConsoleLogs": true
  }
}

The equivalent Cursor.cursorrules format would look like this:

---
version: 1.0
preferences:
  indentation: spaces
  indentSize: 2
  quoteStyle: single
  trailingComma: true
  maxLineLength: 100
context:
  includeTests: true
  includeDocs: true
  maxFiles: 10
---

# Project Rules

## Code Style
- Use 2 spaces for indentation
- Use single quotes for strings
- Always include trailing commas in objects and arrays
- Keep lines under 100 characters
- Remove console.log statements before committing

## Context Guidelines
- Include test files when providing context
- Consider documentation files for understanding
- Limit context to 10 files maximum per request

Notice how Cursor allows you to add natural language explanations after the YAML front matter. This is a powerful feature that helps the AI understand not just what rules to follow, but why they exist.

Handling WindSurf Action Rules

WindSurf action rules define specific behaviors the AI should take in response to certain code patterns or commands. These are particularly important to migrate carefully because they control your workflow automation. In Cursor, these map to custom instructions and rule definitions within the.cursorrules file.

Consider a WindSurf action rule that automatically adds documentation comments:

{
  "actions": [
    {
      "trigger": "functionDeclaration",
      "condition": "visibility === 'public'",
      "action": "addJsdoc",
      "template": "standard"
    },
    {
      "trigger": "onSave",
      "condition": "fileType === 'typescript'",
      "action": "runLinter"
    }
  ]
}

In Cursor, you would express these as instructions:

---
version: 1.0
---

# Action Rules

## Auto-Documentation
When you encounter a public function, automatically generate JSDoc comments using the standard template. Include parameter types, return types, and a brief description of what the function does.

## Pre-Save Actions
For TypeScript files, run the linter automatically before saving. Fix any linting errors that can be fixed automatically, and flag the ones requiring manual intervention.

## Import Organization
On file save, organize imports using the following priority:
1. External libraries (React, Vue, etc.)
2. Internal modules
3. Relative imports
4. Type imports

The Cursor format allows you to be more descriptive about the intent behind each rule, which helps the AI make better decisions when it encounters situations you did not explicitly anticipate.

Migrating WindSurf Context Rules

Context rules determine what information the AI considers when generating code or suggestions. WindSurf uses explicit file lists and pattern matching, while Cursor takes a more holistic approach combining file patterns with natural language instructions.

A WindSurf context configuration might look like this:

{
  "context": {
    "alwaysInclude": [
      "src/config/*",
      "src/types/*"
    ],
    "exclude": [
      "node_modules/**",
      "dist/**",
      "*.test.js"
    ],
    "priorityFiles": [
      "src/index.ts",
      "src/App.tsx"
    ]
  }
}

In Cursor, you would express this as part of your.cursorrules:

---
version: 1.0
---

# Context Configuration

## Always Include
The following directories contain critical configuration and type definitions that should always be included in context:
- `src/config/*` - Application configuration
- `src/types/*` - TypeScript type definitions

## Exclude Patterns
Do not include the following in context calculations:
- `node_modules/` - Dependencies
- `dist/` - Build output
- `*.test.js` - Test files (unless specifically working on tests)

## Priority Files
These files contain core application logic and should be indexed first:
1. `src/index.ts` - Application entry point
2. `src/App.tsx` - Root component (for frontend projects)

The key difference is that Cursor’s format allows you to explain the purpose of each context rule, which helps the AI understand the relationships between files and make smarter decisions about what to include.

Step-by-Step Migration Process

Now that you understand the format differences, here is a systematic process to migrate your WindSurf rules:

First, locate your WindSurf rules file. It is typically named .windsurfrules and lives in your project root. Open this file and review each section systematically. Create a new file named .cursorrules in the same location, then begin translating each section one by one.

For each preference in your WindSurf rules, add a corresponding preference in the YAML front matter of your.cursorrules file. Map JSON boolean values directly (true stays true), and convert string values as needed.

For context rules, translate the file patterns to natural language descriptions. Be explicit about what should and should not be included, and explain why certain files are prioritized.

For action rules, describe each behavior in clear, instructional language. Think about how you would explain the rule to a human developer, and write those instructions accordingly.

After translating all rules, add a summary section at the end of your.cursorrules file. This serves as the “system prompt” for the AI and should capture the overall philosophy and goals of your coding standards.

Testing Your Migrated Rules

Once you have created your.cursorrules file, it is crucial to test that the migration was successful. Start by opening your project in Cursor and triggering a few common actions: generate a new component, refactor a function, or write a test.

Observe whether Cursor’s AI behaves similarly to how WindSurf behaved with your original rules. If something feels off, review the specific rule that should govern that behavior and refine the wording in your.cursorrules file.

Pay particular attention to code style enforcement. WindSurf and Cursor may have different default behaviors, so you might need to be more explicit in your rules than you were with WindSurf. Do not hesitate to iterate on your rules— Cursor’s.cursorrules format is designed to be easily editable as you refine your configuration.

Common Pitfalls to Avoid

Several common mistakes can derail your migration effort. One of the most frequent issues is being too verbose in.cursorrules files. While Cursor encourages detailed instructions, including too many rules or overly long explanations can actually reduce effectiveness. The AI may focus on the volume of rules rather than understanding the intent behind each one.

Another pitfall is not updating rules when project requirements change. Your.cursorrules file should evolve with your project, just like your WindSurf rules did. Schedule regular reviews to ensure your rules still accurately reflect your current coding standards.

Finally, remember that.cursorrules is project-specific. If you work on multiple projects with different coding standards, you will need separate.cursorrules files for each. Unlike some global settings, project-specific rules live in each project’s root directory.

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