umaar
Re:Jules, remote coding agent from Google Labs, announces API
on Friday October 03, 2025 @09:22PM (#45469647)
Was able to build a personal MCP server that connects to the Jules API, letting me dispatch tasks to Jules, from Copilot Chat in VS Code.
Video here: https://www.youtube.com/watch?v=RIjz9w77h1Q
Fontleak: Exfiltrating text using CSS and Ligatures
Re:Claude 3.7 Sonnet and Claude Code
on Monday February 24, 2025 @03:18PM (#43164449)
Drawing an SVG of a pelican on a bicycle. Claude 3.7 edition: https://x.com/umaar/status/1894114767079403747
Re:Google Banned Me from Google Voice
on Thursday November 07, 2024 @12:31PM (#42078828)
I imagine it's not, but can also see automated systems flagging the number as being the recipient of messages for over a hundred different financial institutions.
Re:Google Banned Me from Google Voice
on Thursday November 07, 2024 @12:21PM (#42078675)
Was the number used to sign up for, and receive communications from credit card companies? Is the ban related to signing up for +100 cards?
https://www.dannyguo.com/blog/my-credit-and-debit-card-colle...
Fixing your website's JavaScript performance
Re:What you can get out of a high-quality font
on Tuesday September 10, 2024 @02:29PM (#41504008)
I made a video showcasing some advanced techniques to use fonts on the web, without compromising performance. Covers interesting font metrics like ascenders and descenders. Fascinating to see how much information is contained within a font file!
Brand New Performance Features in Chrome DevTools
Brand New Performance Features in Chrome DevTools
Re:Show HN: Skyvern – Browser automation using LLMs and computer vision
on Thursday March 14, 2024 @05:51PM (#39709381)
Really like the simplicity of your website. I think when you first announced it, you mentioned you might open source Magic Loops, might you do that?
Re:Build AI-powered web apps with Firebase Extensions
on Friday January 26, 2024 @06:14AM (#39141341)
This is a tutorial I wrote for Firebase. It shows how to build three different AI-related web apps: A chatbot, a review summariser, and a video summariser.
Build AI-powered web apps with Firebase Extensions
Re:Ask HN: Could you share your personal blog here?
on Tuesday July 04, 2023 @04:51PM (#36592368)
https://umaar.com/blog/
There's also hundreds of developer tips here https://umaar.com/dev-tips/
Re:Show HN: I made CSS Pro, a re-imagined Devtools for web design
on Thursday June 01, 2023 @09:45AM (#36150945)
You can do this with Workspaces and it works well. Made a video on this here: https://moderndevtools.com/lessons/12
Re:Show HN: I made CSS Pro, a re-imagined Devtools for web design
on Thursday June 01, 2023 @09:41AM (#36150895)
Using DevTools, you can extract all styles, even if they're scattered across loads of tailwind utility classes. Made a video on how to do this here: https://umaar.com/dev-tips/261-devtools-copy-all-styles-for-...
Over 270 tips on Web Development
Re:Get The TLDR Of Any YouTube Video
on Saturday April 29, 2023 @05:42PM (#35757512)
If anyone wants to self-host these YouTube summary tools, made a video on exactly how to do that here https://youtu.be/dqtliRSLmQo
Re:Consume streaming data from OpenAI with vanilla JavaScript
on Wednesday April 19, 2023 @05:52PM (#35633764)
Hey HN, have seen a lot of AI demos recently using libraries/frameworks for what is effectively an API call - so thought to showcase how this could be done with vanilla JavaScript. Turns out response.body is an async iterable, so you can do something like:
for await (const chunk of response.body) { // use chunk }Consume streaming data from OpenAI with vanilla JavaScript
Re:Digital clutter: Learning to let go and stop hoarding terabytes
on Sunday April 16, 2023 @07:51AM (#35589183)
This blog post shows S3 Glacier Deep Archive costs $2.05 USD for 2 TB but on the AWS pricing page it's showing as 2,000 GB * $0.0018 per GB = $3.60 ?
Edit: this is for London pricing, guess it's a bit higher.
Re:Animated Drawings
on Friday April 14, 2023 @06:56AM (#35567965)
This is a great project and it was fun playing around with it.
When Meta started discussing this in 2021, the HN sentiment [1] was quite...cautious, making connections to how Meta can't be trusted with kids drawings. Has something changed?
Re:Supabase Edge Runtime: Self-Hosted Deno Functions
on Tuesday April 11, 2023 @12:09PM (#35527187)
I have stuck with cheap VPS servers for as long as I can remember. It takes 5 minutes to deploy a full stack node.js app, along with a database - and I've yet to exhaust the resources on my VPS, even with all my side projects (production grade and hobby stuff).
Have always found it weird how so many heroku-style hosting providers charge _per app_, things get costly, quickly, when you have lots of small apps like I do.
Just yesterday I realised I'll need a database to store job queues for https://chatbling.net - ChatGPT helped me figure out how to install it, have it persist to disk, ensure it starts up with the system etc. It's nice to not be fearful of unexpected charges hitting my card.
To anyone reading, even if it's just for learning, every now and then, skip the vercel/fly.io/netlify/planetscale/upstash/render/railway whatever cool hosting provider is out, and give a $5 VPS a try.
Re:Personal Concierge Using OpenAI's ChatGPT via Telegram and Voice Me...
on Monday April 10, 2023 @09:11AM (#35511840)
Agreed, giving the user a choice would be best here. Something tells me most users would not change it from whatever the default is, but yeah still good to expose this as a setting which should be doable. Thanks for the input!
Re:Personal Concierge Using OpenAI's ChatGPT via Telegram and Voice Me...
on Monday April 10, 2023 @07:48AM (#35511246)
I see my server has restarted a few times! I imagine it's folks here since I haven't shared Chat Bling elsewhere yet. Sorry to anyone who started generating images, but haven't received a response. The 'jobs' for images generations are stored entirely within memory, so a server restart will lose all of that.
Going forward, I'll explore storing image jobs in redis or something, which will be more resilient to server crashes.
As for conversation history, I'll continue to keep that in memory for now (messages are evicted after a short time period, or if messages consume too many OpenAI tokens) - even that's lost during a server restart/crash. Feels like quite a big decision to store sensitive chat history in a persistent database, from a privacy standpoint.
Re:WhatsApp with AI: ChatGPT, image creation and speech to text
on Monday April 10, 2023 @07:08AM (#35511034)
Hey HN, I made Chat Bling. An AI chat bot that works with official WhatsApp APIs. You can:
- Chat with ChatGPT directly from WhatsApp.
- Generate pretty cool images (see the home page for screenshots).
- Transcribe your WhatsApp voice messages - speech to text using Whisper.
No signup needed, thank you, let me know if you have any questions or feedback.
WhatsApp with AI: ChatGPT, image creation and speech to text
Re:Personal Concierge Using OpenAI's ChatGPT via Telegram and Voice Me...
on Monday April 10, 2023 @07:01AM (#35510999)
Made something similar recently, but for WhatsApp: https://chatbling.net/
What behaviour would users prefer when uploading a voice message, a) the voice message is transcribed, so speech to text? Or b) the voice message is treated as a query, so you receive a text answer to your voice query?
I've done a) for now as mobile devices already let you type with your voice.
Re:Anyone else witnessing a panic inside NLP orgs of big tech companies?
on Thursday March 16, 2023 @08:23PM (#35190950)
Incredible results to my questions. Do these work by finding similar pieces of text from a vector DB, and then embedding those similar pieces of text in the prompt? The answers I'm getting seem to be comprehensive, as if it has considered large amounts of book text, curious how this works as there's an OpenAI token limit. I've heard this is what tools like langchain can help with, so maybe I should play around with that as this all seems like a mystery to me.
Re:What I Learned at Stripe
on Tuesday February 28, 2023 @01:05PM (#34972604)
Thank you!