Example or explication of how to implement jsonSchema() helper

[Rvey]

Is there any full example covering the implementation of the jsonSchema() helper https://sdk.vercel.ai/docs/reference/ai-sdk-core/json-schema with tools? My goal is to create dynamic functions from the back office and use them dynamically.
Thanks 🙏

[lgrammel]

There is an example on the page that you referenced. What are you missing?

[lgrammel]

why not?

[Rvey]

Because, as shown here in the example, a Zod schema is required and also the tool import is needed. I tried to mess around with parsing the tools from stringified JSON.

What I want to know is if I can achieve something like that.

let tools_from_backoffice = JSON.parse('{"weather":{"description":"Get the weather","parameters":{"type":"object","properties":{"location":{"type":"string"},"temperature":{"type":"string"}},"required":["location","temperature"]}}}')

const result = await streamText({
model: openai("gpt-4o-2024-08-06"),
messages: convertToCoreMessages(messages),
tools:tools_from_backoffice,
toolChoice: "auto",
});


I tried to mess around with parsing the tools from stringified JSON, but it doesn't work. I keep getting the error: TypeError: Cannot read properties of undefined (reading '_def').

thanks

[Rvey]

by tool import i mean "import {tool} from "ai"

[lgrammel]

  let tools_from_backoffice = JSON.parse(
    '{"weather":{"description":"Get the weather","parameters":{"type":"object","properties":{"location":{"type":"string"},"temperature":{"type":"string"}},"required":["location","temperature"]}}}',
  );

  // map parameters in json schema
  Object.keys(tools_from_backoffice).forEach(tool => {
    tools_from_backoffice[tool].parameters = jsonSchema(
      tools_from_backoffice[tool].parameters,
    );
  });

  const result = await streamText({
    model: openai('gpt-4o-2024-08-06'),
    prompt: 'what is the weather in Paris?',
    tools: tools_from_backoffice,
    toolChoice: 'auto',
  });

[Rvey]

Thank you @lgrammel , it works.