Anthropic

1

Get your API keys

You need two keys:

Inference Catalyst project API key — from your dashboard under API Keys
Anthropic API key — from your Anthropic console

2

Set environment variables

export INFERENCE_API_KEY=<your-project-api-key>
export ANTHROPIC_API_KEY=<your-anthropic-api-key>

3

Update your code

Point the SDK at the gateway. Because the Anthropic SDK sends apiKey as the x-api-key header, you pass your Anthropic key there and add the Inference project key as an Authorization header.

TypeScript
Python
cURL

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

const client = new Anthropic({
  baseURL: "https://api.inference.net",
  apiKey: process.env.ANTHROPIC_API_KEY,
  defaultHeaders: {
    "Authorization": `Bearer ${process.env.INFERENCE_API_KEY}`,
    "x-inference-provider": "anthropic",
    "x-inference-environment": process.env.NODE_ENV,
  },
});

const response = await client.messages.create({
  model: "claude-opus-4-6",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello" }],
}, {
  headers: { "x-inference-task-id": "default" },
});

import os
from anthropic import Anthropic

client = Anthropic(
    base_url="https://api.inference.net",
    api_key=os.environ["ANTHROPIC_API_KEY"],
    default_headers={
        "Authorization": f"Bearer {os.environ['INFERENCE_API_KEY']}",
        "x-inference-provider": "anthropic",
        "x-inference-environment": env = os.getenv("APP_ENV", "development"),
    },
)

response = client.messages.create(
    model="claude-opus-4-6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
    extra_headers={"x-inference-task-id": "default"},
)

curl https://api.inference.net/v1/messages \
  -H "Authorization: Bearer $INFERENCE_API_KEY" \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -H "x-inference-provider: anthropic" \
  -H "x-inference-environment: production" \
  -H "x-inference-task-id: default" \
  -d '{
    "model": "claude-opus-4-6",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Integrations

Model providers

Frameworks

Setup

Integrations

Model providers

Frameworks

​Setup

Setup