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

Next Steps

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