Alex Booker (@bookercodes) / X

Alex Booker

7,016 posts

Alex Booker

@bookercodes

Building @Mastra - teaching you how to build agents along the way

London

Joined July 2015

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Alex Booker
@bookercodes
Jul 13
Incredibly excited to share file-based agents in Mastra 🔥 Write the prompt in instructions.md, add .ts files in tools/ to define tools by filename, and place subagents in subagents/ Need a new capability? Just add another file
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Alex Booker
@bookercodes
Feb 10, 2022
You don't need a Computer Science degree to become a hireable programmer. That's it. That's the Tweet.
Alex Booker
@bookercodes
Feb 9, 2022
Our culture is youth-obsessed. It's always "14-Year-Old Prodigy Programmer Dreams In Code" or "16-Year-Old Dropout is CEO of Company Worth Millions" Never "28-Year-Old Person Learns to Code and Starts a Steady And Profitable Career Where They Feel Valued and Have a Life"
Alex Booker
@bookercodes
Sep 19, 2022
Junior developers do not know their worth but I am going to convince you! Here are 9 unspoken reasons companies need juniors and why you should feel empowered to negotiate:
Alex Booker
@bookercodes
Apr 3, 2018
We built an open source Slack clone complete with: 👉 Private rooms 👉 Rich media attachments 👉 Typing indicators 👉 Read receipts ... All powered by @ReactJS and Pusher Chatkit 💪 Source code: github.com/pusher/react-s…
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Alex Booker
@bookercodes
Dec 22, 2021
Here it is 🎉! A comprehensive (and ambitious 🥵) JUNIOR Web Developer checklist Years of experience is too vague to measure skill. I hope this template I made with @scrimba gives your SPECIFIC ideas about what to learn next 🌱! different-marmoset-f7b.notion.site/Junior-Web-Dev…
Alex Booker
@bookercodes
Oct 31, 2021
CSS is a nice, relaxing way to get super frustrated and disappointed in yourself
Alex Booker
@bookercodes
Feb 18, 2022
Saying JavaScript is better than PHP is like saying English is better than Spanish. Literally makes no sense. You could write the next great novel in either English or Spanish. You can write the next great app in any JavaScript or PHP.
Alex Booker
@bookercodes
Feb 14, 2022
It's always, "how do I get a dev job?" Never, "how do I become a talented and collaborative developer companies *want* to work with?"
Alex Booker
@bookercodes
Feb 17, 2022
I went IN-DEPTH to find the best sites to to find junior developer jobs. Made sure to include some niche ones where you can sidestep the competition 👏💯! Here you go:
Alex Booker
@bookercodes
Sep 23, 2025
I saw a viral post that said “MCP is just an API” That is wrong and misleading ❌ I recorded a highly-detailed video to explain the difference and why it matters
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Alex Booker
@bookercodes
Jan 25, 2022
Still working out the deets but you can now look forward to a special @Scrimba space this Thursday where we will invite newer developers to share their story so far 🌱 We're all going to make a bunch of new friends and learn a lot in the process 👇🏻 🔗 x.com/i/spaces/1jMKg…
Alex Booker
@bookercodes
Jan 6, 2023
How do you remember the order of padding: 10px 10px 10px 10px I always think north east south west I also heard someone picture it like a clock
Alex Booker
@bookercodes
Feb 23, 2022
An interviewer asks, "what are your biggest weaknesses?" What do you say? Cliche answers only 😂👇