Integrate the Martian Code Router With Claude Code

This document describes how to set up Claude Code to route all your LLM requests through Martian.

Prerequisites

Ensure you have Claude Code installed. See the Claude Code documentation for installation instructions, or run:

npm install -g @anthropic-ai/claude-code

For detailed setup instructions, see the Claude Code setup guide.

Configuration

Choose one of the following configuration methods:

Option 1: Global Configuration

This configuration applies to all projects using Claude Code.

Step 1: Store Your API Key

Add your Martian API key to your shell profile (~/.zshrc, ~/.bashrc, etc.):

export MARTIAN_API_KEY="your-martian-api-key"

Replace your-martian-api-key with your actual Martian API key from the Martian Dashboard.

Then reload your shell:

source ~/.zshrc  # or source ~/.bashrc etc.

Step 2: Create Global Claude Code Configuration

Create or edit ~/.claude/settings.json with the following content:

{
  "apiKeyHelper": "echo $MARTIAN_API_KEY",
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.withmartian.com"
  },
  "permissions": {
    "deny": [
      "Read(./.env)",
      "Read(./.env.*)"
    ]
  }
}

Option 2: Per-Project Configuration

This configuration applies only to a specific project directory.

Step 1: Store Your API Key

Create a .env file in your project root:

echo "MARTIAN_API_KEY=your-martian-api-key" >> .env
echo ".env" >> .gitignore

Replace your-martian-api-key with your actual Martian API key from the Dashboard.

Step 2: Create Project Claude Code Configuration

Create a .claude directory and add the configuration file:

mkdir .claude

Create .claude/settings.local.json with the following content:

{
  "apiKeyHelper": "source .env && echo $MARTIAN_API_KEY",
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.withmartian.com"
  },
  "permissions": {
    "deny": [
      "Read(./.env)",
      "Read(./.env.*)"
    ]
  }
}

Start Using Claude Code

Navigate to your project directory and start Claude Code:

cd your-project
claude

Claude Code will now route all requests through Martian.