Windsurf Cascade

Windsurf Cascade Agent Skill

This skill provides a comprehensive guide and set of workflows for utilizing the Windsurf IDE and its Cascade AI agent, including all features from Wave 13 (January 2026).

Installation

Download

Download Windsurf Editor from windsurf.com for your platform:

• macOS: .dmg installer (Intel and Apple Silicon)
• Windows: .exe installer
• Linux: .deb package (Debian/Ubuntu) or .tar.gz tarball

Post-Installation Setup

Add to PATH (optional but recommended):

During onboarding, you can optionally install windsurf in PATH to launch from the command line:

# macOS - create symlink manually if needed
sudo ln -sF /Applications/Windsurf.app/Contents/Resources/app/bin/windsurf /usr/local/bin/windsurf

# Open a project from terminal
windsurf /path/to/project

Import existing configuration:

Windsurf supports importing settings, extensions, and keybindings from VS Code or Cursor during onboarding. You can also do this later via the Command Palette:

Cmd+Shift+P → "Import VS Code Settings"
Cmd+Shift+P → "Import Cursor Settings"

WSL Setup (Windows)

Windsurf supports WSL (Beta). Connect to your WSL instance:

1. Click the bottom-left remote connection button
2. Select "Connect to WSL" or use Command Palette: Remote-WSL: Connect to WSL

For CLI access from WSL terminal, create a helper script:

#!/bin/bash
CURRENT_PATH=$(readlink -f "$1")
windsurf --folder-uri "vscode-remote://wsl+Ubuntu$CURRENT_PATH"

Authentication

Sign up or log in to your Windsurf (formerly Codeium) account during onboarding or via the profile menu.

Cascade — The AI Agent

Cascade is Windsurf's agentic AI assistant. It understands your entire codebase, tracks your real-time actions (edits, terminal, clipboard), and can autonomously create files, edit code across multiple files, run terminal commands, and maintain project memory.

Cascade Modes

Cascade comes in two primary modes:

• Write Mode (Cmd+L / Ctrl+L): Full write access — creates files, edits code, runs terminal commands, and makes modifications to your codebase.
• Chat Mode (Cmd+Shift+L / Ctrl+Shift+L to toggle): Read-only — answers questions about your codebase and general coding principles without making changes.

Model Selection

Switch between models from the dropdown below the Cascade input box. Available models include:

• SWE-1.5 (Windsurf's own near-frontier model, free for all users)
• Claude Opus 4.6, Claude Sonnet 4.5
• GPT-5.2, GPT-5.2-Codex, GPT-5.1, GPT-5.1-Codex
• Gemini 3 Flash, Gemini 3 Pro
• Falcon Alpha (stealth model, speed-optimized)
• BYOK (Bring Your Own Key) for custom models

Each prompt consumes credits depending on the model selected.

Tool Calling

Cascade has a variety of built-in tools:

• Search: Semantic code search across your repository
• Analyze: Deep analysis of code structure and relationships
• Web Search: Search the web for documentation and references
• MCP: Call external tools via Model Context Protocol
• Terminal: Execute shell commands directly

Cascade can make up to 25 tool calls per prompt. If the trajectory stops, type continue and Cascade will resume.

Context Selection with @ Mentions

Reference specific files, functions, or context in your prompts:

@filename.ts
@src/components/
@function:calculateTotal

You can also:

• Drag and drop files from the File Explorer into Cascade
• Send problems from the Problems panel to Cascade
• Highlight errors and click "Explain and Fix"
• @-mention previous conversations for cross-session context

Voice Input

Use voice input to interact with Cascade via speech-to-text transcription.

Checkpoints and Reverts

Cascade creates named checkpoints. You can revert changes by hovering over a prompt and clicking the revert arrow, or via the table of contents. Reverts are currently irreversible.

Keyboard Shortcuts

Skills

Skills let you bundle instructions, templates, checklists, and supporting files into folders that Cascade can invoke for complex, multi-step tasks.

Creating a Skill

1. Click the Customizations icon in Cascade's top-right slider menu
2. Navigate to the Skills panel
3. Click + Workspace (project-specific) or + Global
4. Name the skill (lowercase letters, numbers, hyphens only)

Skill Structure

Each skill is a folder with a SKILL.md file and optional supporting files:

.windsurf/skills/deploy-to-production/
├── SKILL.md
├── deployment-checklist.md
├── rollback-procedure.md
└── config-template.yaml

SKILL.md Format

---
name: deploy-to-production
description: Guides the deployment process to production with safety checks
---

## Pre-deployment Checklist
1. Run all tests
2. Check for pending migrations
3. Verify environment variables
...

The name field is used for display and @-mentions. The description helps Cascade decide when to automatically invoke the skill.

Invoking Skills

• Automatic: Cascade uses progressive disclosure to invoke skills when they're relevant to your task
• Manual: @-mention the skill name in your prompt

For the full Skills specification, visit agentskills.io.

Workflows

Workflows define a series of steps to guide Cascade through repetitive tasks. They are saved as markdown files and invoked via slash commands.

Creating a Workflow

1. Click Customizations icon → Workflows panel → + Workflow
2. Or ask Cascade to generate a Workflow for you

Workflow Storage

Workflows are saved in .windsurf/workflows/ directories. Windsurf discovers them from:

• Current workspace and sub-directories
• Parent directories up to the git root (for git repos)
• Multiple workspace support with deduplication

Workflow files are limited to 12,000 characters each.

Invoking Workflows

/workflow-name

Workflows can call other workflows:

## Steps
1. Call /lint-and-format
2. Call /run-tests
3. Deploy to staging

Example Workflow — PR Review

---
name: pr-review
description: Review PR comments and address them
---

## Steps
1. Check out the PR branch: `gh pr checkout [id]`
2. Get comments on PR:
   ```bash
   gh api --paginate repos/[owner]/[repo]/pulls/[id]/comments | jq '.[] | {user: .user.login, body, path, line}'

3. For EACH comment, address the feedback and commit the fix
4. Push changes and reply to each comment

## Memories & Rules

Memories persist context across Cascade conversations. Rules guide Cascade behavior.

### Memories

- **Auto-generated**: Cascade creates memories when it encounters useful context. Does NOT consume credits.
- **User-created**: Type `create memory ...` in Cascade to manually save context.
- Auto-generated memories are workspace-specific.

**Managing Memories:**
- Windsurf Settings → Settings tab → Manage next to "Cascade-Generated Memories"
- Or: three dots in Cascade → Manage Memories
- Toggle auto-generation: Settings → "Auto-Generate Memories"

### Rules

Rules are manually defined instructions for Cascade.

**Rule Levels:**
- `global_rules.md` — applies across all workspaces
- `.windsurf/rules/` — workspace-level directory with rules tied to globs or descriptions
- System-level rules (Enterprise) — deployed via MDM policies

**Activation Modes:**
- **Always**: Rule is always active
- **Glob**: Applied to files matching a pattern (e.g., `*.js`, `src/**/*.ts`)
- **Manual / Description-based**: Activated by natural language match

**Rules Best Practices:**
- Keep rules simple, concise, and specific
- Use bullet points and markdown formatting
- Avoid generic rules like "write good code"
- Use XML tags to group similar rules

**Example Rule:**

```markdown
# Coding Guidelines
- My project's programming language is Python
- Use early returns when possible
- Always add documentation when creating new functions and classes
- Use pytest for testing
- Follow PEP 8 style guide

Terminal Integration

Inline AI Terminal

Press Cmd+I / Ctrl+I in the terminal to access an inline chat box that generates CLI commands from natural language.

Cascade Terminal Execution

Cascade can run terminal commands directly. Configure auto-execution levels in Windsurf Settings:

1. Manual: Always ask for permission (default)
2. Semi-auto: Auto-run safe commands
3. Turbo Mode: Auto-execute all commands without confirmation
4. Custom: Use Allow/Deny lists for specific commands

Dedicated Terminal (Wave 13)

Windsurf uses a dedicated zsh shell for Cascade command execution, providing improved reliability. It uses your .zshrc environment variables and is fully interactive.

⚠️ Using with AI Agents / Automation

When running Windsurf from automated environments (AI agents, scripts, orchestrators), the IDE requires a GUI context. For headless automation scenarios, consider:

1. Using Windsurf's Workflows: Define multi-step tasks as Workflows that Cascade executes
2. MCP Integration: Connect external automation tools via MCP servers
3. Cascade Hooks: Execute custom shell commands at key points in Cascade's workflow

MCP Integration

Windsurf supports Model Context Protocol (MCP) for connecting external tools and services.

Configuration

Configure MCP servers in mcp_config.json:

{
  "mcpServers": {
    "github": {
      "command": "uvx",
      "args": ["github-mcp"],
      "env": {
        "GITHUB_TOKEN": "your_token_here"
      }
    }
  }
}

Access via: Windsurf Settings → Cascade → Manage MCPs → View raw config

MCP Features

• MCP Marketplace: Browse curated servers in Windsurf Settings for one-click setup
• @ Mentions: Trigger MCP tools by @-mentioning in Cascade
• Enable/Disable: Toggle MCP servers from the Cascade header
• Transports: Supports stdio, Streamable HTTP, and SSE
• Enterprise: Team admins can whitelist/blacklist MCP servers

Each MCP tool call costs one prompt credit.

Cascade Hooks

Execute custom shell commands at key points during Cascade's workflow:

• On model response: For logging, auditing, security controls
• Pre/Post hooks: For validation and governance (Enterprise)

Simultaneous Cascades

Run multiple Cascade sessions in parallel:

• Open side-by-side Cascade panes
• Use Git worktrees to work on different branches without conflicts
• Start work in a new Cascade while another is executing

Fast Context

Press Cmd+Enter / Ctrl+Enter on the first message to enable Fast Context. Uses SWE-grep models for up to 20x faster code retrieval from large codebases.

Ignoring Files

Add files to .codeiumignore at the root of your workspace (same syntax as .gitignore). For global ignore rules across all repositories, place .codeiumignore in ~/.codeium/.

Workflows (Common Use Cases)

Code Review

Review the changes in the current branch against main.
Focus on security and performance.

Refactoring

Refactor src/utils.ts to reduce complexity and improve type safety.

Debugging

Analyze the following error log and suggest a fix: [paste error]

Or: Highlight error → "Explain and Fix"

Git Integration

Generate a commit message for the staged changes adhering to conventional commits.

Deployment

Create a Workflow in .windsurf/workflows/deploy.md:

---
name: deploy
description: Deploy to production with safety checks
---

## Steps
1. Run all tests: `npm test`
2. Build the project: `npm run build`
3. Run linter: `npm run lint`
4. If all pass, deploy: `npm run deploy:production`
5. Verify deployment health checks

Invoke with /deploy in Cascade.

Live Preview

Windsurf has built-in live preview for web apps. Ask Cascade to start a dev server and preview will appear inside the editor. Click any element to let Cascade reshape it.

App Deploy

Deploy your app with one click via Cascade tool calls (beta Netlify deployment support).

Pricing

Key Differences from Cursor