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Overview

Code completion provides natural, context-aware code suggestions as you type in Xcode. This brings AI-powered autocomplete to your Swift development workflow, helping you write code faster and with fewer errors.

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Supported Providers

cmd supports code completion from three leading providers:

GitHub Copilot

Use your existing GitHub Copilot subscription for code suggestions

Mistral AI

Fast and accurate completions powered by Mistral’s Codestral model

Mercury Coder

Inception’s Mercury Coder for thoughtful, context-aware suggestions

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Configuration

1

Open Settings

Navigate to Settings in cmd
2

Select Code Completion

Find the Code Completion section
3

Choose a Provider

Select your preferred completion provider:
  • GitHub Copilot: Requires a GitHub Copilot subscription
  • Mistral AI: Requires a Mistral API key
  • Claude: Uses your configured Anthropic API key
4

Configure Trigger Mode

Choose when completions should appear:
  • Automatic: Suggestions appear as you type
  • On Demand: Trigger suggestions manually with a keyboard shortcut

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Provider Setup

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GitHub Copilot

1

Sign In

Click Sign in with GitHub in the Code Completion settings
2

Authorize

Complete the GitHub OAuth flow to authorize cmd
3

Verify Subscription

Ensure you have an active GitHub Copilot subscription (Individual, Business, or Enterprise)
GitHub Copilot requires an active subscription. Visit github.com/features/copilot to subscribe.

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Mistral AI / Mercury Coder

1

Get API Key

Create an API key at console.mistral.ai
2

Add to cmd

Enter your Mistral API key in Settings > AI Providers
3

Select Mistral

Choose Mistral AI as your code completion provider

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Trigger Modes

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Automatic Mode

In automatic mode, code completions appear as you type after a brief pause. This provides a seamless experience where suggestions flow naturally with your coding rhythm.
  • Suggestions appear automatically after you stop typing
  • Minimal interruption to your workflow
  • Best for developers who want continuous assistance

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On-Demand Mode

In on-demand mode, you control when completions appear by pressing a keyboard shortcut.
  • Trigger completions only when you want them
  • Less visual noise while coding
  • Best for developers who prefer explicit control
Configure your preferred keyboard shortcut in Settings > Keyboard Shortcuts to trigger on-demand completions.

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Using Code Completion

Once configured, code completion works seamlessly in Xcode:
  1. Start typing in any Swift file
  2. View suggestions that appear inline as ghost text
  3. Accept a suggestion by pressing Tab
  4. Dismiss a suggestion by pressing Escape or continuing to type
Code completion requires cmd to be running in the background. Ensure cmd is open for completions to work.

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Best Practices

Write Clear Comments

Add comments describing what you want to implement. Code completion uses these as context for better suggestions.

Use Meaningful Names

Descriptive function and variable names help the AI understand your intent and provide more relevant completions.