Anthropic JavaScript SDK Integration - Helicone OSS LLM Observability

Warning

This integration method is maintained but no longer actively developed. For the best experience and latest features, use our new AI Gateway with unified API access to 100+ models.

Proxy Integration#

Create an account + Generate an API Key

Log into helicone or create an account. Once you have an account, you can generate an API key.

Set HELICONE_API_KEY as an environment variable

HELICONE_API_KEY=<your API key>

Modify the base path and add a Helicone-Auth header

import Anthropic from "@anthropic-ai/sdk";const anthropic = new Anthropic({  baseURL: "https://anthropic.helicone.ai",  apiKey: process.env.ANTHROPIC_API_KEY,  defaultHeaders: {    "Helicone-Auth": `Bearer ${process.env.HELICONE_API_KEY}`,  },});await anthropic.messages.create({  model: "claude-3-opus-20240229",  max_tokens: 1024,  messages: [{ role: "user", content: "Hello, world" }],});