Anthropic Tool Use (Function Calling)

Overview

Tool use lets Claude call functions you define — query databases, hit APIs, read files, do math. Claude decides when to call a tool, you execute it, and feed the result back. This is how you build Claude-powered agents.

Note: Anthropic does not offer an embeddings API. For embeddings + vector search, pair Claude with a dedicated embedding model (OpenAI, Cohere, or Voyage).

Prerequisites

• Completed clade-model-inference
• Understanding of JSON Schema for tool definitions

Instructions

Step 1: Define Tools

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