Official SDK Ecosystem

Anthropic provides first-party SDKs for four languages: Python (anthropic), TypeScript / JavaScript (@anthropic-ai/sdk), Go (anthropic-sdk-go), and Java (anthropic-java).

Python Example

import anthropic

client = anthropic.Anthropic()  # Reads ANTHROPIC_API_KEY from environment

message = client.messages.create(
    model="claude-sonnet-5",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Explain quantum computing in three sentences."}]
)
print(message.content[0].text)

TypeScript Example

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic();

const message = await client.messages.create({
  model: "claude-sonnet-5",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Explain quantum computing in three sentences." }]
});
console.log(message.content[0].text);