Calling an Agent From a Workflow (Legacy)

import { openai } from "@ai-sdk/openai";
import { Mastra } from "@mastra/core";
import { Agent } from "@mastra/core/agent";
import { LegacyStep, LegacyWorkflow } from "@mastra/core/workflows/legacy";
import { z } from "zod";
 
const penguin = new Agent({
  name: "agent skipper",
  instructions: `You are skipper from penguin of madagascar, reply as that`,
  model: openai("gpt-4o-mini"),
});
 
const newWorkflow = new LegacyWorkflow({
  name: "pass message to the workflow",
  triggerSchema: z.object({
    message: z.string(),
  }),
});
 
const replyAsSkipper = new LegacyStep({
  id: "reply",
  outputSchema: z.object({
    reply: z.string(),
  }),
  execute: async ({ context, mastra }) => {
    const skipper = mastra?.getAgent("penguin");
 
    const res = await skipper?.generate(context?.triggerData?.message);
    return { reply: res?.text || "" };
  },
});
 
newWorkflow.step(replyAsSkipper);
newWorkflow.commit();
 
const mastra = new Mastra({
  agents: { penguin },
  legacy_workflows: { newWorkflow },
});
 
const { runId, start } = await mastra.legacy_getWorkflow("newWorkflow").createRun();
 
const runResult = await start({
  triggerData: { message: "Give me a run down of the mission to save private" },
});
 
console.log(runResult.results);