DurableAgent: Tool googleSearch does not have an execute function

[andrelandgraf]

Code:

const tools: ToolSet = {
  webSearch: google.tools.googleSearch({}),
  urlContext: google.tools.urlContext({}),
};

export const durableChatAgent = new DurableAgent({
  model: "google/gemini-3-pro-preview",
  system: systemPrompt,
  tools,
});

Error:

Error: Tool "webSearch" does not have an execute function
    at executeTool (node_modules/@workflow/ai/src/agent/durable-agent.ts:198:44)
    at anonymous (node_modules/@workflow/ai/src/agent/durable-agent.ts:164:61)
    at Array.map (<anonymous>)
    at DurableAgent.stream (node_modules/@workflow/ai/src/agent/durable-agent.ts:163:18)

Package versions:

• @ai-sdk/google: "^3.0.0-beta.56",
• @ai-sdk/react: "^3.0.0-beta.102",
• @workflow/ai: "^4.0.1-beta.21",
• ai: "^6.0.0-beta.102
• workflow: "^4.0.1-beta.21",

Was able to reproduce here: https://github.com/andrelandgraf/google-websearch-debug (Vercel AI Gateway API key needed for code to run)

[TooTallNate]

Hey Andre! Thanks for the repro. I'm working on a fix here. Could you try out these packages and let me know if it works for you?

npm i https://workflow-docs-c6ozndek0.vercel.sh/workflow.tgz https://workflow-docs-c6ozndek0.vercel.sh/workflow-ai.tgz

Example test code:

import { google as googleProvider } from '@ai-sdk/google';
import { DurableAgent } from '@workflow/ai/agent';
import { google } from '@workflow/ai/google';
import { convertToModelMessages, type UIMessageChunk } from 'ai';
import { getWritable } from 'workflow';

export async function test() {
  'use workflow';

  const agent = new DurableAgent({
    model: google('gemini-2.5-flash'),
    tools: {
      webSearch: googleProvider.tools.googleSearch({}),
      urlContext: googleProvider.tools.urlContext({}),
    },
  });

  await agent.stream({
    messages: convertToModelMessages([
      {
        role: 'user',
        parts: [
          {
            type: 'text',
            text:
              'List the top 5 San Francisco news from the past week.' +
              'You must include the date of each article.',
          },
        ],
      },
    ]),
    writable: getWritable<UIMessageChunk>(),
  });
}

[andrelandgraf]

Yes, works! :)