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Tool as a Workflow step (Legacy)

This example demonstrates how to create and integrate a custom tool as a workflow step, showing how to define input/output schemas and implement the tool's execution logic.

import { createTool } from "@mastra/core/tools";
import { LegacyWorkflow } from "@mastra/core/workflows/legacy";
import { z } from "zod";

const crawlWebpage = createTool({
  id: "Crawl Webpage",
  description: "Crawls a webpage and extracts the text content",
  inputSchema: z.object({
    url: z.string().url(),
  }),
  outputSchema: z.object({
    rawText: z.string(),
  }),
  execute: async ({ context }) => {
    const response = await fetch(context.triggerData.url);
    const text = await response.text();
    return { rawText: "This is the text content of the webpage: " + text };
  },
});

const contentWorkflow = new LegacyWorkflow({ name: "content-review" });

contentWorkflow.step(crawlWebpage).commit();

const { start } = contentWorkflow.createRun();

const res = await start({ triggerData: { url: "https://example.com" } });

console.log(res.results);




View source on GitHub

Workflows (Legacy)​

The following links provide example documentation for legacy workflows: