SDKs & frameworks

There is no gateway SDK to install. We speak Anthropic's protocol, so the official clients work as they are.

One line changes

Point the client's base URL at us and use a gateway key instead of an Anthropic key. Everything else — streaming, tool use, retries, typed responses — behaves exactly as it did.

By language

import os
from anthropic import Anthropic

client = Anthropic(
    api_key=os.environ["GATEWAY_API_KEY"],
    base_url="{BASE_URL_ROOT}",   # the only line that changes
)

message = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)

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

const client = new Anthropic({
  apiKey: process.env.GATEWAY_API_KEY,
  baseURL: '{BASE_URL_ROOT}', // the only line that changes
});

const message = await client.messages.create({
  model: 'claude-sonnet-4-6',
  max_tokens: 1024,
  messages: [{ role: 'user', content: 'Hello' }],
});

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

$response = Http::withHeaders([
        'x-api-key' => config('services.gateway.key'),
        'content-type' => 'application/json',
    ])
    ->timeout(180)
    ->post('https://ai.dijitul.uk/v1/messages', [
        'model' => 'claude-sonnet-4-6',
        'max_tokens' => 1024,
        'messages' => [
            ['role' => 'user', 'content' => 'Hello'],
        ],
    ]);

$text = $response->json('content.0.text');

from langchain_anthropic import ChatAnthropic

llm = ChatAnthropic(
    model="claude-sonnet-4-6",
    anthropic_api_key=os.environ["GATEWAY_API_KEY"],
    anthropic_api_url="{BASE_URL_ROOT}",
)

print(llm.invoke("Hello").content)

// Any plugin that calls the Anthropic API can be repointed the same way.
$response = wp_remote_post( 'https://ai.dijitul.uk/v1/messages', [
    'timeout' => 180,
    'headers' => [
        'x-api-key'    => get_option( 'gateway_api_key' ),
        'content-type' => 'application/json',
    ],
    'body' => wp_json_encode( [
        'model'      => 'claude-sonnet-4-6',
        'max_tokens' => 1024,
        'messages'   => [
            [ 'role' => 'user', 'content' => 'Hello' ],
        ],
    ] ),
] );

if ( is_wp_error( $response ) ) {
    return $response;
}

$body = json_decode( wp_remote_retrieve_body( $response ), true );
$text = $body['content'][0]['text'] ?? '';

Environment variables

The Anthropic SDKs read ANTHROPIC_BASE_URL, so in many projects you can switch over without touching code at all.

GATEWAY_API_KEY=dj_live_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
ANTHROPIC_BASE_URL={BASE_URL_ROOT}

Timeouts

A long completion can take a couple of minutes. Set a client timeout of at least 180 seconds, and prefer streaming for anything user-facing — you get the first token in under a second rather than waiting for the whole response.

What is not proxied

We expose the Messages API, token counting, models and usage. Anthropic features that depend on their own infrastructure are not available through any Bedrock-backed gateway, ours included:

Files API and URL-based image or document sources
Server-side tools — web search, web fetch, code execution
Agent Skills and the MCP connector
Message Batches

If you need one of these, that part of your workload has to talk to Anthropic directly — and it will be processed in the US. Keep it separate from the traffic you are routing through here for residency reasons.