Daniel - Js Craft

Newsletter #67 - Algorithms to Live By, New podcast - TypeScript MCP, and the Future of AI Agents Hey! It's Daniel here, author of 📘 Building Al Agents with LangGraph js and 📕 LangChain for JavaScript Developers. I hope your November has started well! Mine was tiring (what else is new?) but I had ...

The 67th edition of the JS Craft Newsletter is out:
- 📕 Algorithms to Live By
- 🎙 New Podcast Episode with @paolo.ricciuti.me
- 💻 TypeScript MCP
- 🤖 The Future of AI Agents
Read it here → www.js-craft.io/blog/newslet...

YouTube video by Neciu Dan - The Señor Developer URL Pattern API in 100 seconds

When day to day things are not as simple as they seem, and why we need the js URL Pattern API:

www.youtube.com/watch?v=UYBb...

Continuing our Spanish adventures, we took a 3-day trip to Nerja. Just check out this picture! I'm a bad photographer, but when the landscape and light are so beautiful, even I can take decent pictures.

Enjoy your time in Portugal, and if you have time, be sure to go to a Fado concert; some of them are quite nice.

Hey Brian! We are in the south of Spain. Do you have any plans to be in the area? The first sangrias are on me :)

YouTube video by Js-Craft Academy 🎙 Paolo Ricciuti - on TypeScript MCP, AI, and the Craft of Software Development

A couple of days ago, I interviewed @paolo.ricciuti.me , core contributor to @svelte.dev and maintainer of the TypeScript MCP library. Many interesting things, including how the Svelte team is using its MCP server to upgrade code to new versions.

youtu.be/rITKditB-A0

bittersweet news :) Thanks for all Brian 👏

Writing MCP servers it's quite boilerplatey but most of the times you will return a single text content from tool or a single message from prompt.

I'm adding a bunch of utils to tmcp so you can now just

return tool.text("Tool result");

or

return prompt.message("Your prompt");

Any feedback?

YouTube video by Rob Lipsett Dorian Yates Reveals How to Win at All Costs

This podcast with Dorian Yates (6 consecutive Mr. Olympia titles) is excellent! It seems that when it comes to building muscle mass, the same principles apply as in passive investing: keep it simple, do fewer actions, and put the most you can into it.
youtu.be/t2pBvH6I7qg

One of my bets is that, most applications will soon have an integrated AI/LLM layer. Just like they have a database layer. The AI layer could be used for:
- 💬 NLP capabilities to greatly enhance the UX
- 📦 making sense of unstructured data
- 🤖 commentating with other AIs

Seeing all the news about JS and AI, I am very excited about the attention JavaScript is getting as a language for building AI-powered applications. It reminds me of a tweet I saw a while ago that said, "Python is for training AI, while JavaScript is for building with it."

It's not always sunny here in the South of Spain, but being able to workout outdoors at the seaside in shorts and a T-shirt in November makes it all worth it. Happines++

Building Al Agents with LangGraph.js - 30% off JavaScript, LangChain and AI integration resources.

When it comes to AI, orchestrating LLMs & agents through code is far more powerful (and fun) than relying solely on prompt engineering. That's one of the reasons I wrote "📘 Build AI Agents with LangGraph js".

www.js-craft.io/langgraph-js...

YouTube video by CascadiaJS GPT in Vanilla JavaScript

Check out @ishananand.bsky.social 's presentation at @cascadiajs.com. It’s a great example of how we can create something similar to "View Source", but for LLMs 🤩

youtu.be/clqB9mpdwok

super nice @intellectronica.net ! Saw just the first 15 min, on my way to work , but will continue later.

Newsletter #66 - Building AI Agents, Financial Independence as a Software Developer, and Rethinking Success Hey! It's Daniel here, author of 📘 Building Al Agents with LangGraph js and 📕 LangChain for JavaScript Developers. Life has been quite intense lately - raising a toddler, relocating to a new country, ...

The 66th edition of the JS Craft Newsletter just dropped:
- 🎓 How LLM tokens really work
- 🎙 Hrishi Olickel on AI engineering & agents
- 💰 Financial Independence as a Software Dev
- 🧠 Knowledge work is dying; welcome to the age of wisdom work

Read it here: www.js-craft.io/blog/newslet...

Speaking about taking home office infrastructure to the next level, I found this older article by Stephen Wolfram on his home office setup. Incredible

writings.stephenwolfram.com/2019/02/seek...

how about how having a monthly newsletter helped you, and why do you put effort into it :D

State of the software engineering jobs market, 2025: what hiring managers see Observations by 30+ hiring managers and tech recruiters about what’s happening: a flood of inbound applications means more selective hiring, there’s increased demand for product engineers, and more

Tech job market report by @gergely.pragmaticengineer.com:
- 📈 gradual but consistent increase in hiring across both Big Tech & startups
- 🤖 surging demand for AI engineers
- 📍decline in remote opportunities, and the growing importance of location
newsletter.pragmaticengineer.com/p/state-of-t...

invisible breaking change :)) love this

this === true

Success is unpredictable. Luck and timing play a bigger role than we think. That’s why who you work with and how you spend your days might be the real “win.”
I wrote this short rant on the importance of long-term games and values 👉 www.js-craft.io/blog/on-succ...

LDL -- 👏 Great stuff, Nicolas :)

The question is, what can we do? If there is something ...

Web Weekly 172 Imports with { type: ‘JSON’ } Intl.Segmenter clip-path() & shape() sibling-count() & sibling-index() Import maps A web compatibility standard

The new Web Weekly is just about to hit all the inboxes. 🎉

As always, it's jam-packed with web dev goodies. Check it out! 👇

www.stefanjudis.com/blog/web-wee...

Knowledge Work Is Dying—Here’s What Comes Next While AI devours information-based roles, OpenAI, Alphabet, and Apple are investing in wisdom work—and you can, too

One of the best ideas I've read recently. Moral of the story: don't compete with AI on marginal improvements but instead, do things AI cannot do. Knowledge work is dying! Welcome to the age of wisdom work!
every.to/thesis/knowl...

This weekend we made a 2 days trip to Ronda which has now become my favorite non-coastal town. Mind-blowing views. Thank you, 🇪🇸 Spain!

I've been in the industry for over 20 years. Tech is challenging, exciting, and beautiful. A great place to grow. But it's not easy at all, especially if you want to master the craft.

I just saw one of those “It’s so easy to get into tech and make a huge salary” courses. It was launched by someone who:
1. did a coding bootcamp,
2. stayed 2–3 years at a company,
3. quit, and now sells courses.

If it’s so nice and easy in tech, why quit so fast?

I think that RAG will be a huge market. 95% of the world's data is "private" and therefore unavailable for training foundation models. But we can feed this private data to local LLMs via RAG. In some way each organization will likely have its own LLM-RAG app.