Anthropic

Use Anthropic Claude models (Claude Sonnet, Claude Haiku) with RadarOS. Setup, factory, and config.

Anthropic

Use Anthropic’s Claude models with RadarOS through the unified ModelProvider interface. Claude excels at long-context tasks, analysis, and nuanced reasoning.

---

Setup

Install

Install the Anthropic SDK (required by RadarOS for Anthropic support):

npm install @anthropic-ai/sdk

Environment

Set your API key via environment variable:

export ANTHROPIC_API_KEY="sk-ant-..."

Or pass it in config (see below).

---

Factory

import { anthropic } from "@radaros/core";

const model = anthropic("claude-sonnet-4-20250514");

modelId · string · required

The Anthropic model identifier.

config · object

Optional configuration. See Config below.

---

Supported Models

Model ID	Description
claude-sonnet-4-20250514	Claude Sonnet 4. Strong balance of speed and capability.
claude-3-5-haiku-20241022	Claude 3.5 Haiku. Fast, cost-effective.

Using a different Claude model

Pass any valid Anthropic model ID to the factory. Check the Anthropic docs for the latest model IDs.

---

Config

apiKey · string

Anthropic API key. If omitted, uses ANTHROPIC_API_KEY environment variable.

Example

const model = anthropic("claude-sonnet-4-20250514", {
  apiKey: process.env.ANTHROPIC_API_KEY,
});

---

Full Example

import { Agent, anthropic } from "@radaros/core";

const agent = new Agent({
  name: "Claude Assistant",
  model: anthropic("claude-sonnet-4-20250514", {
    apiKey: process.env.ANTHROPIC_API_KEY,
  }),
  instructions: "You are a thoughtful, thorough assistant. Think step by step.",
});

const output = await agent.run("Analyze the pros and cons of microservices.");
console.log(output.text);