Function Calling — Animate | AI Wisdom

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🎞 ANIMATE · Mode 3 of 5 · +100 XP— Function Calling
🔧Define
📞Call
🔄Route
✅Respond
🎯 Next: Test →
Step 1 / 4
Speed
Define available tools
Tool schema tells the model what functions exist💡 Analogy
Like giving an assistant a phone directory — they know who to call and what to say.
We describe a weather function to the model, including what parameters it needs.
Console Output
> Tools registered: 1
> get_weather(city: string, unit?: string)
> Sending to model...
●function-calling.ts
Define available toolsL1–14
1const tools = [{
2  type: 'function',
3  function: {
4    name: 'get_weather',
5    description: 'Get current weather for a city',
6    parameters: {
7      type: 'object',
8      properties: {
9        city: { type: 'string', description: 'City name' },
10        unit: { type: 'string', enum: ['celsius', 'fahrenheit'] },
11      },
12      required: ['city'],
13    },
14  },
15}];
16 
17const response = await openai.chat.completions.create({
18  model: 'gpt-4o', tools,
19  messages: [{ role: 'user', content: 'What is the weather in Tokyo?' }],
20});
21 
22// Model returns tool call instead of text:
23// { tool_calls: [{ function: { name: 'get_weather', arguments: '{"city":"Tokyo"}' } }] }
23 lines
Timeline — 4 Steps
Define available tools
Tool schema tells the model what functions exist💡 Analogy
Like giving an assistant a phone directory — they know who to call and what to say.
We describe a weather function to the model, including what parameters it needs.
Console Output
> Tools registered: 1
> get_weather(city: string, unit?: string)
> Sending to model...

Tool schema tells the model what functions exist

Tool schema tells the model what functions exist

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Tool schema tells the model what functions exist

Tool schema tells the model what functions exist

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Discussion