Anthropic SDK

The Anthropic SDK reads ANTHROPIC_BASE_URL and ANTHROPIC_API_KEY. Set both and every call to Claude routes through TapPass.

Setup

export ANTHROPIC_BASE_URL=https://tappass.example.com
export ANTHROPIC_API_KEY=tp_...

Python

import anthropic

client = anthropic.Anthropic()  # picks up env vars
message = client.messages.create(
    model="claude-3-5-sonnet-20241022",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)

Node / TypeScript

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

const client = new Anthropic();  // picks up env vars
const message = await client.messages.create({
  model: "claude-3-5-sonnet-20241022",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello" }],
});

Streaming

with client.messages.stream(
    model="claude-3-5-sonnet-20241022",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hi"}],
) as stream:
    for text in stream.text_stream:
        print(text, end="", flush=True)

What’s supported

• messages (sync, stream, async)
• Tool use (tool_use / tool_result content blocks)
• Vision (image content blocks)
• Extended thinking on Claude 3.7+
• Prompt caching — cache_control fields flow through untouched

Example

tappass-examples/anthropic