anth-install-auth

# Anthropic Install & Auth ## Overview Set up the official Anthropic SDK for Python or TypeScript and configure API key authentication. The SDK wraps the Claude Messages API at `https://api.anthropic.com/v1/messages`. ## Prerequisites - Node.js 18+ or Python 3.8+ - Package manager (npm, pnpm, yarn, or pip) - Anthropic account with API access at [console.anthropic.com](https://console.anthropic.com) - API key from Console > API Keys ## Instructions ### Step 1: Install SDK ```bash # Python pip install anthropic # TypeScript / Node.js npm install @anthropic-ai/sdk # With pnpm pnpm add @anthropic-ai/sdk ``` ### Step 2: Configure API Key ```bash # Set environment variable (recommended) export ANTHROPIC_API_KEY="sk-ant-api03-..." # Or add to .env file echo 'ANTHROPIC_API_KEY=sk-ant-api03-your-key-here' >> .env # Verify it's set echo $ANTHROPIC_API_KEY | head -c 15 # Expected: sk-ant-api03-... ``` ### Step 3: Verify Connection (Python) ```python import anthropic client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env message = client.messages.create( model="claude-sonnet-4-20250514", max_tokens=64, messages=[{"role": "user", "content": "Say hello in exactly 5 words."}] ) print(message.content[0].text) print(f"Model: {message.model}, Tokens: {message.usage.input_tokens}+{message.usage.output_tokens}") ``` ### Step 4: Verify Connection (TypeScript) ```typescript import Anthropic from '@anthropic-ai/sdk'; const client = new Anthropic(); // re...