anth-install-auth

name	anth-install-auth
description	Install and configure Anthropic Claude SDK authentication for Python and TypeScript. Use when setting up a new Claude API integration, configuring API keys, or initializing the Anthropic SDK in your project. Trigger with phrases like "install anthropic", "setup claude api", "anthropic auth", "configure anthropic API key", "claude sdk setup".
allowed-tools	Read, Write, Edit, Bash(npm:*), Bash(pip:*), Grep
version	1.0.0
license	MIT
author	Jeremy Longshore <[e-mail]>
tags	["saas","ai","anthropic"]
compatible-with	claude-code

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
• API key from Console > API Keys

Instructions

Step 1: Install SDK

# Python
pip install anthropic

# TypeScript / Node.js
npm install @anthropic-ai/sdk

# With pnpm
pnpm add @anthropic-ai/sdk

Step 2: Configure API Key

# 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)

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)