Trae vs Windsurf | agentconfig.ing

Trae vs WindsurfComparisonUpdated 2026-03-16

SUMMARY

Trae (IDE) uses markdown configuration while Windsurf (IDE) uses markdown. They differ on 2 of 11 compared features. Both tools provide AI-assisted development but take different approaches to project configuration.

FEATURE COMPARISON

Feature	Trae	Windsurf	Notes
Config format	markdown	markdown
Hierarchy support	✓	✓	Whether config files can be placed at multiple directory levels
Global config	✓	✓	User-wide configuration outside any project
Project config	✓	✓
Subdirectory scoping	✗	✓	Config files in subdirectories that apply only to that subtree
File inclusion / imports	✗	✗	Ability to include or reference other files from config
Ignore file	✗	.codeiumignore
IDE integration	✓	✓
Schema / structure	Free-form (Markdown)	Free-form (Markdown)	Whether config uses structured schema or free-form content
Git committed	✓	✓	Whether primary config files are intended to be version-controlled
Encoding	UTF-8	UTF-8

FILE MAPPING

Purpose	Trae	Windsurf
Project rules	.trae/rules/*.md	.windsurf/rules/*.md
Project rules	User Rules	AGENTS.md

SIDE-BY-SIDE CODE SAMPLES

Trae

.trae/rules/*.md

markdown

---
description: React component conventions and patterns
globs: "*.tsx,*.jsx"
alwaysApply: false
---
# React Component Rules

1. Use functional components with TypeScript interfaces for props
2. Prefer server components by default — add "use client" only for interactivity
3. Colocate component tests in adjacent __tests__/ directories
4. Use named exports, not default exports
5. Extract custom hooks into hooks/ directory when reused across components

## Styling
- Use Tailwind CSS v4 utility classes
- Follow mobile-first responsive design
- Keep component-specific styles colocated

## State Management
- Use React 19 use() for async data in server components
- Prefer URL state (searchParams) over client state where possible
- Use Zustand for complex client-side state

Windsurf

.windsurf/rules/*.md

markdown

---
trigger: glob
globs: "**/*.test.ts"
---

# Testing Conventions

- Use Vitest as the test runner
- Colocate test files next to source files
- Use describe blocks organized by function/component name
- Prefer userEvent over fireEvent in component tests
- Mock external services; never hit real APIs in unit tests

KEY DIFFERENCES

1. Subdirectory scoping

Trae: Not supported. Windsurf: Supported.

2. Ignore file

Trae: Not supported. Windsurf: .codeiumignore.

WHICH SHOULD I USE?

Recommendation

Choose based on your IDE/CLI preference. If you use Trae, configure .trae/rules/*.md. If you use Windsurf, configure .windsurfrules. Many projects include config files for multiple tools so each team member can use their preferred editor.

PORTABILITY TIP

sync-instructions.sh

bash

# Maintain a single source of truth:
cp AI-INSTRUCTIONS.md CLAUDE.md
cp AI-INSTRUCTIONS.md .cursorrules
cp AI-INSTRUCTIONS.md AGENTS.md