Anthropic SDK through Model Gate

Python

from anthropic import Anthropic

client = Anthropic(
    api_key="mg_live_...",
    base_url="https://api.model-gate.com",
)

message = client.messages.create(
    model="claude-sonnet-4.6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)

print(message.content[0].text)

Node.js

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

const client = new Anthropic({
  apiKey: process.env.MODEL_GATE_API_KEY,
  baseURL: "https://api.model-gate.com",
});

const message = await client.messages.create({
  model: "ch-46s",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello" }],
});

console.log(message.content[0].text);

The Anthropic SDK base URL does not include /v1; the SDK appends the Messages path.