Anthropic-native clients

The Anthropic SDKs and LangChain's ChatAnthropic speak the Messages API. Give them the bare origin; the SDK appends /v1/messages itself. Base URLs, client keys, and attribution headers are on SDKs & frameworks.

Anthropic (Python)

Anthropic (Python)

from anthropic import Anthropic

client = Anthropic(
    base_url="http://<gateway>:8787",
    api_key="<your-gateway-key>",
    default_headers={"x-anyray-provider": "anthropic"},
)

client.messages.create(
    model="claude-sonnet-5",
    max_tokens=256,
    messages=[{"role": "user", "content": "ping"}],
)

Anthropic (TypeScript)

Anthropic (TypeScript)

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

const client = new Anthropic({
  baseURL: 'http://<gateway>:8787',
  apiKey: '<your-gateway-key>',
  defaultHeaders: { 'x-anyray-provider': 'anthropic' },
});

LangChain

LangChain

from langchain_anthropic import ChatAnthropic

llm = ChatAnthropic(
    base_url="http://<gateway>:8787",
    api_key="<your-gateway-key>",
    model="claude-sonnet-5",
    default_headers={"x-anyray-provider": "anthropic"},
)