Function createTool

Example

import { createTool } from '@iqai/adk';
import { z } from 'zod';

// Tool with parameters
const calculatorTool = createTool({
  name: 'calculator',
  description: 'Performs basic arithmetic operations',
  schema: z.object({
    operation: z.enum(['add', 'subtract', 'multiply', 'divide']),
    a: z.number().describe('First number'),
    b: z.number().describe('Second number')
  }),
  fn: ({ operation, a, b }) => {
    switch (operation) {
      case 'add': return { result: a + b };
      case 'subtract': return { result: a - b };
      case 'multiply': return { result: a * b };
      case 'divide': return { result: b !== 0 ? a / b : 'Cannot divide by zero' };
      default: return { error: 'Unknown operation' };
    }
  }
});

// Tool without parameters (schema is optional)
const timestampTool = createTool({
  name: 'timestamp',
  description: 'Gets the current timestamp',
  fn: () => ({ timestamp: Date.now() })
});
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