agent.ts

// add ...tools to agent.tools[]

const mcp = new MCPClient({
  servers: {
    hackernews: {
      command: "npx",
      args: ["-y", "@devabdultech/hn-mcp-server"],
    }
  },
});
const tools = await mcp.getTools()

bluesky-tool.ts

import { createTool } from '@mastra/core/tools';
import { z } from 'zod';
import { AtpAgent } from '@atproto/api';

export const blueskyPostTool = createTool({
  id: 'bluesky-post',
  description: 'Post a text update to Bluesky using username/password credentials',
  inputSchema: z.object({
    text: z.string().min(1).max(300).describe('Post text'),
  }),
  outputSchema: z.object({
    uri: z.string(),
    cid: z.string(),
    url: z.string()
  }),
  execute: async ({ context }) => {
    const agent = new AtpAgent({ service: 'https://bsky.social' });

    await agent.login({
      identifier: process.env.BLUESKY_USERNAME!,
      password: process.env.BLUESKY_PASSWORD!,
    });

    const res = await agent.post({
      $type: 'app.bsky.feed.post',
      text: context.text,
      createdAt: new Date().toISOString(),
    });

    const rkey = res.uri.split('/').pop();
    const profile = agent.session?.handle ?? agent.session?.did;
    const url = profile && rkey ? `https://bsky.app/profile/${profile}/post/${rkey}` : `https://bsky.app`; 

    return { uri: res.uri, cid: res.cid, url };
  },
});

crawl-tool.ts

import { createTool } from "@mastra/core";
import Exa from "exa-js";
import z from "zod";

export const crawlTool = createTool({
  id: 'crawlTool',
  description: '',
  inputSchema: z.object({
    url: z.string()
  }),
  outputSchema: z.object({
    title: z.string(),
    summary: z.string(),
    content: z.string()
  }),
  execute: async ({ context }) => {
    const exa = new Exa(process.env.EXA_API_KEY!)
    const {results} = await exa.getContents(
      [context.url],
      {
        text: true,
        context: true,
        summary: true
      }
    )
    const page = results[0]
    return { 
      title: page.title!,
      summary: page.summary,
      content: page.text,
    }
  }
})