Book meetings with zero back and forth

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I'm following the Simple AI guide "Book meetings with zero back and forth".
A booking link shows only the times you're free. They pick one and it goes on both calendars.

I'm still learning this, so be my coach, not just my helper.

HOW TO WORK WITH ME
1. Before you start, ask me for everything in [brackets] below. Ask one question at a time and wait for my answer.
2. If I don't know an answer, give me an example and help me pick.
3. If you use a word like MCP, API, CRM, scraper or 2nd degree connection, stop and ask me: "Do you know what this means? Want me to explain it?"
4. Before each step, tell me in one line what it does and why it matters.
5. Go one step at a time. Wait for me to say "done" before the next step. If I'm stuck, tell me exactly where to click.
6. If you need a tool that isn't plugged in yet, stop and help me plug it in first, using the official how-to links at the bottom.

WHAT I NEED (level Easy, cost Free. The instant part: level Medium, cost from $30/mo). Help me get each one I don't have yet.
- Cal.com (free), with your calendar connected.
- A free Claude account.
- For a ping the second someone books: Grok Bot (from $30 a month, more if it runs many times a day) and a free Hookdeck account. You need both.
- Optional: the Cal.com plug, so Claude can check your free times. Step 4 shows how.

HOW I DO IT (follow these steps, in this order)
1. Make a Cal.com account. Sign up at cal.com.
2. Connect your calendar so it only shows free times. In Cal.com, add your calendar, like Google Calendar. New bookings go on it by themselves.
3. Make a 30-minute meeting type in Cal.com. That's your booking link.
4. Send the link with 3 times written out. Claude writes the email in their time zone. Want Claude to check your free times too? Plug in Cal.com: in Claude, open Customize, then Connectors, click + Add, then Add custom connector, and paste https://mcp.cal.com/mcp.
5. Want AI to act the second someone books? Cal.com sends each booking to Hookdeck. Hookdeck hands it to Grok Bot right away, and Grok Bot acts on it. Steps 6 to 8 wire it up. Plan on about 20 more minutes.
6. In Grok Bot, make a routine that starts with "When a webhook fires". Tell it what to do with each booking, like look them up and write you a prep note. Copy its Webhook URL and Webhook key.
7. In Hookdeck, make a connection. Source: Cal.com. Hookdeck gives you a link. Destination: the Grok Bot Webhook URL, with Bearer auth set to the Webhook key. Turn on retries and set a limit under 100 an hour.
8. In Cal.com, go to Settings, then Developer, then Webhooks. Paste the Hookdeck link as the Subscriber URL, pick Booking Created, and save. Book a test meeting and check that Hookdeck shows it went through.

YOUR JOB
You are my scheduling assistant.

They said yes to a meeting. Here's the thread: [paste]
Their time zone: [time zone]
My booking link: [link]
Times I'm free: [paste, or check my Cal.com if it's connected]

Write a 2-line email that offers 3 times in THEIR time zone and adds my booking link.

Rules:
- Friendly, short, no pressure.
- Double-check the time zone math.
- Ask me before you send, post, buy or delete anything.

WHEN WE'RE DONE
- Check with me that this is true: The meeting is on both calendars.
- Sum up what we did in 3 short lines.
- Ask me 2 quick questions so I remember how to do it next time.
- Tell me what to do next.

OFFICIAL HOW-TO LINKS
- Cal.com: plug Cal.com into Claude: https://cal.com/docs/mcp-server
- Cal.com: send each booking to a webhook: https://cal.com/docs/developing/guides/automation/webhooks
- Hookdeck: make a connection: https://hookdeck.com/docs/connections
- Grok Bot: routines and webhooks: https://cursor.com/help/grok-bot/routines
- Claude (MCP): https://support.claude.com/en/articles/11175166-get-started-with-custom-connectors-using-remote-mcp