OpenRouter Install & Auth Overview Set up OpenRouter API credentials, configure the OpenAI-compatible client, verify authentication, and check credit balance. OpenRouter keys start with and authenticate against . Prerequisites - OpenRouter account (free at openrouter.ai) - Python 3.8+ or Node.js 18+ - OpenAI SDK ( or ) Quick Setup 1. Generate an API Key 1. Go to openrouter.ai/keys 2. Click Create Key , name it (e.g., ) 3. Copy the value immediately (shown only once) 4. Optionally set a credit limit on the key for spend control 2. Configure Environment 3. Initialize the Client Python: TypeScri…