Windsurf Known Pitfalls

Overview

Real gotchas when using Windsurf (Codeium's AI IDE). Windsurf's Cascade AI agent, Flows architecture, and workspace indexing behave differently from VS Code copilots -- understanding these differences prevents frustrating debugging sessions.

Prerequisites

• Windsurf installed and configured
• Understanding of Cascade's agent model vs inline autocomplete
• Awareness of workspace indexing behavior

Instructions

Step 1: Don't Confuse Cascade with Autocomplete

Windsurf has two AI systems: Cascade (agentic, multi-file) and Supercomplete (inline). Using Cascade for quick completions wastes context.

# BAD: opening Cascade to complete a single line
User: "finish this function signature"
# Cascade spins up full agent context, reads multiple files = slow

# GOOD: use Tab for inline Supercomplete, Cascade for multi-step tasks
# Supercomplete: just type and press Tab
# Cascade: Cmd+L for multi-file refactoring, debugging, architecture

Step 2: Manage Cascade Context Window

Cascade reads your entire workspace to build context. Large monorepos with node_modules or build artifacts slow it down.

# BAD: no .windsurfignore in a large monorepo
# Cascade indexes node_modules, dist/, .git/ = slow and noisy context

# GOOD: create .windsurfignore (same syntax as .gitignore)
# .windsurfignore
node_modules/
dist/
build/
.next/
*.min.js
*.bundle.js
coverage/

Step 3: Avoid Overly Broad Cascade Instructions

Vague instructions cause Cascade to make sweeping changes across many files.

# BAD: "refactor the codebase to use TypeScript"
# Cascade may try to convert every file at once

# GOOD: scope the task
"Convert src/utils/api.js to TypeScript. Add proper types for all
function parameters and return values. Don't change other files."

Step 4: Trust But Verify File Edits

Cascade can write directly to files. Not reviewing diffs before accepting leads to subtle bugs.

# BAD: accepting all Cascade changes without review
# Cascade modified 12 files -> "Accept All" -> broken tests

# GOOD: review each file change in the diff view
# 1. Read the Cascade output explaining what it changed
# 2. Review each file diff individually
# 3. Accept file by file, or reject problematic changes
# 4. Run tests before committing

Step 5: Handle Extension Compatibility

Windsurf is VS Code-based but not all extensions work. Some conflict with Cascade.

# KNOWN CONFLICTS:
# - GitHub Copilot: conflicts with Supercomplete (disable one)
# - Other AI assistants: may interfere with Cascade context
# - Some language servers: duplicate suggestions

# GOOD: disable competing AI extensions
# Settings > Extensions > disable Copilot if using Windsurf AI

Error Handling

Examples

Effective Cascade Prompts

GOOD: "In src/api/routes.ts, add input validation for the POST /users
endpoint using zod. Validate email format and name length (2-50 chars).
Return 400 with specific error messages on validation failure."  # HTTP 400 Bad Request

BAD: "Add validation to the API"

Resources

• Windsurf Docs
• Cascade Guide

Output

• Configuration files or code changes applied to the project
• Validation report confirming correct implementation
• Summary of changes made and their rationale