The AI agent economy's first big court case

Edition 134 | November 6, 2025

Imagine making so much money that you have to sue people to stop them from buying from you.

Welcome back to Building AI Agents, your biweekly guide to everything new in the field of agentic AI!

In today’s issue…

• Amazon sues Perplexity over its shopping agents

• NVIDIA’s new suite of models for agentic applications

• The most basic tools for beginners to build agents with

• LangChain releases its own no-code workflow agent builder

…and more

🔥 IN CASE YOU MISSED IT

Readers’ favorite items from the past week

1. Microsoft’s new framework for training agents

2. Stanford’s free lecture series on AI model architectures

3. AI agents are getting their own lobby group in Washington

4. A free course on ensuring agents handle data safely

5. OpenAI buys an agent company

‼️ ESSENTIAL NEWS

Amazon sues Perplexity over its shopping agent

After sending a cease-and-desist order, Amazon sued the top AI search company, Perplexity, to prevent its Comet browser agent from shopping on behalf of users. The apparent motivation is a loss of revenue for Amazon’s paid product ads when they are no longer being shown to a human user.

Shopping agents are rapidly changing E-commerce, with 1/3 of product searches now coming from AI. This first major lawsuit of the agentic economy is unlikely to be the last.

 🤖 AGENT OF THE WEEK

👋 Welcome back to Agent of the Week!

Ever wanted your own secretary?
All the big C-suite execs usually have one—but for most of us, that’s a luxury we’ll never get.

So, I built one!

I made an agent that acts like my personal secretary, just for scheduling meetings inside email threads.

Meet Donna, my AI agent assistant (yes, that’s a Suits reference).

When I CC Donna on a thread, I just ask her to find a time that works for the other person and schedule the meeting. She replies with my available times, and boom — I’ve got what most people would think is a personal secretary.

She even reschedules meetings if needed. It all happens naturally in the same email thread, and the other person never knows it’s an agent... unless you tell them.

It feels exactly like having your own personal secretary managing your inbox.

🧠 How It Works

1. Gmail Trigger → Email Thread Detection
   The agent activates the moment Donna is CC’d or mentioned in an email chain.

2. Chat Model (GPT-4.1 mini) → Intent Recognition
   Donna reads the email and figures out what’s needed:

   1. Scheduling a new call

   2. Suggesting available times

   3. Rescheduling an existing meeting

3. Simple Memory → Who’s the Boss?
   Donna knows who she works for — your name, email, and calendar — so she always replies as your assistant.

4. Calendar Integration → Find Availability
   Donna checks your Google Calendar and picks out friendly time options (e.g. “Tuesday at 2 PM or Wednesday morning”).

5. Gmail Reply In Minutes → Seamless Communication
   She replies directly in the thread with a message like:
   “Hi Sarah, happy to coordinate a time for Akshay. Here are a few slots he’s available…”

6. Smart Scheduling & Rescheduling
   When someone confirms, Donna books it.
   If they ask to change, Donna automatically reschedules and sends an updated invite.

This agent is perfect if you:

• Hate going back and forth on meeting times

• Want to look more professional and responsive

• Or just want to say you have your own “Donna” — straight out of Suits.

If you want to build this step-by-step, I walk through the full setup inside our Building AI Agents Community.

Till next week,
✌️ AP

 🤝 WITH HUBSPOT

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