Anthropic Core Workflow B → Tool Use

Overview

This skill redirects to clade-embeddings-search which covers tool use (function calling), the agentic tool loop, and building Claude-powered agents.

Prerequisites

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

Instructions

Step 1: Use claude-embeddings-search instead

This skill has been replaced. The secondary Anthropic workflow is tool use / function calling, covered in full by clade-embeddings-search.

Step 2: Key topics covered there

• Defining tools with JSON Schema input schemas
• Sending messages with tools attached
• Executing tool calls and returning results
• Building an agentic loop that runs until Claude stops calling tools
• Error handling for tool use edge cases

Output

• Redirected to clade-embeddings-search
• Complete tool use patterns available there

Error Handling

Issue	Solution
Skill not found	Run clade-embeddings-search directly
Tool use errors	See tool validation patterns in that skill

Examples

// Use claude-embeddings-search for the full tool use guide
const tools: Anthropic.Tool[] = [{
  name: 'get_weather',
  description: 'Get weather for a city',
  input_schema: {
    type: 'object',
    properties: { city: { type: 'string' } },
    required: ['city'],
  },
}];
const response = await client.messages.create({
  model: 'claude-sonnet-4-20250514',
  max_tokens: 1024,
  tools,
  messages: [{ role: 'user', content: "What's the weather in Paris?" }],
});

Resources

• Tool Use Guide
• Tool Use API

Next Steps

Run clade-embeddings-search for the complete tool use guide.