Function: defineTool()

defineTool<T>(definition): ToolDefinition<T>

Defined in: packages/core/src/utils/tools.ts:394

Define a tool with raw JSON Schema for input validation.

Type Parameters

T

T extends (...args) => unknown

Parameters

definition

ToolDefinition<T>

Returns

ToolDefinition<T>

Deprecated

Use tool() or defineZodTool() instead — they provide Zod-based type inference and support the full v6+ feature set (requiresApproval, toModelOutput, callers, etc.) that this raw-JSON-schema form lacks. Will be removed in the next major version.

Example

const weatherTool = defineTool({
  name: 'get_weather',
  description: 'Get weather info',
  inputSchema: {
    type: 'object',
    properties: {
      location: { type: 'string' }
    },
    required: ['location']
  },
  execute: async ({ location }) => {
    return { temp: 22, condition: 'sunny' };
  }
});