Show HN: JsonPP, a Functional JSON Superset https://ift.tt/oHBMcT0

Show HN: JsonPP, a Functional JSON Superset Json plus plus or Json pre-processor, whichever you prefer. A turing complete, unit tested joke of a language with just the slightest glint of usefulness. https://ift.tt/RBeUQk9 May 29, 2025 at 11:40PM

Keeping Muni Metro Safe and Running: Fix-It Week Recap

Keeping Muni Metro Safe and Running: Fix-It Week Recap
By Sevilla Mann

Fix-It Week is when we take extra time to do big maintenance projects that keep Muni Metro running smoothly. This helps prevent problems before they happen, so your trips are faster, trains arrive on time and the subway stays clean and safe. Most of our maintenance work happens overnight, after the last train of the day. But sometimes that’s not enough time to get bigger jobs done. During Fix-It Week, the Market Street Subway is closed early each night at 9:30 p.m. to give crews more time to repair, replace, clean and inspect important equipment between Embarcadero and West Portal. From May 5...

Published May 28, 2025 at 05:30AM
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Show HN: I built an AI tool that generates click-worthy YouTube thumbnails https://ift.tt/59H7DVl

Show HN: I built an AI tool that generates click-worthy YouTube thumbnails Hey HN! Software engineer here. As an amateur youtuber, I've been struggling with thumbnails, especially since I don't have any design or editing skills. Decided to give it a try and make my own automatic thumbnail generator. Me being an ADHD person, made sure that there's no parameter tuning and shape choosing and fuss like that, just simply give prompt and generate thumbnail. Increased my CTR from 1.2% to 2.3% (faceless fantasy books niche on youtube) Thumbnail X (completely free for now) - https://thumbnailx.com/ Just wanna add that this is by no means a perfect thumbnail maker for huge YouTube moguls with millions of subscribers but I'm sure it's gonna be extremely helpful for beginner youtubers and medium size channels struggling with thumbnails. Tools used: 1. Cursor for development (shoutout to claude oppus 4.0) 2. Few image generators (primarily ideogram, but leonardo ai, deep ai and gpt 4o as fallbacks) 3. Few llms (chatgpt, claude, gemini for validating images and prompt enhancement) 4. AWS and Redis for storage & caching 5. Digital ocean for hosting and db 6. Python https://thumbnailx.com/ May 29, 2025 at 02:51AM

Show HN: European Accessibility Act – Simple CLI Checker https://ift.tt/cmIYFNQ

Show HN: European Accessibility Act – Simple CLI Checker https://ift.tt/WIRjESF May 29, 2025 at 12:35AM

Show HN: Octogen: e-commerce capabilities for agents https://ift.tt/AqPgYvX

Show HN: Octogen: e-commerce capabilities for agents Hi HN, We just released a public beta of e-commerce capabilities for AI agents — aimed at developers building shopping agents or personal assistants. It’s early and buggy, but we’d love your feedback. Try a live demo here: https://ift.tt/BP0zZAp --- ## Why we built this We believe the biggest *technical* bottleneck in building consumer e-commerce agents is fragmented product data and inconsistent schemas across online stores. So we created a high-fidelity yet unified interface for *e-commerce catalog + checkout*, regardless of the underlying platform. --- ## What it does We currently offer two core capabilities: ### 1. Unified product catalog (for LLM-style search) - Octogen automatically wrangles any ecommerce site into a common schema — a superset of `schema.org/Product`. - It works across platforms and is available today for hundreds of sites. - You can request new stores — ~95% are processed fully autonomously. - Useful for agents doing RAG-based product search with rich attribute awareness. ### 2. Agentic checkout (closed beta) - Works on *any ecommerce site* using virtual cards (Visa only for now). - Enables agents to complete checkout flows much faster than browser-based "computer agents." - We're working on support for additional vaults/wallets/payment APIs. --- If you’re working on agentic commerce, autonomous checkout, or personal AI shoppers — we’d love your feedback and ideas. More at: https://octogen.ai https://octogen.ai May 29, 2025 at 12:25AM

Show HN: Free mammogram analysis tool combining deep learning and vision LLM https://ift.tt/K7QLkpT

Show HN: Free mammogram analysis tool combining deep learning and vision LLM I've built Neuralrad Mammo AI, a free research tool that combines deep learning object detection with vision language models to analyze mammograms. The goal is to provide researchers and medical professionals with a secondary analysis tool for investigation purposes. Important Disclaimers: - NOT FDA 510(k) cleared - this is purely for research investigation - Not for clinical diagnosis - results should only be used as a secondary opinion - Completely free - no registration, no payment, no data retention What it does: 1. Upload a mammogram image (JPEG/PNG) 2. AI identifies potential masses and calcifications 3. Vision LLM provides radiologist-style analysis 4. Interactive viewer with zoom/pan capabilities You can try it with any mass / calcification mammo images, e.g. by searching Google: mammogram images mass Key Features: - Detects and classifies masses (benign/malignant) - Identifies calcifications (benign/malignant) - Provides confidence scores and size assessments - Generates detailed analysis using vision LLM - No data storage - images processed and discarded Use Cases: - Medical research and education - Second opinion for researchers - Algorithm comparison studies - Teaching tool for radiology training - Academic research validation The implementation details include: 1. 1st stage object detection using PyTorch retinalnet training DDSM+Internal data set 2. 2nd stage fine tuned Qwen2.5 VL with labeled data + radiology report sets 3. Server is implemented with Flask, Client implemented using SvelteJS The system is designed specifically for research investigation purposes and to complement (never replace) professional medical judgment. I'm hoping this can be useful for the medical AI research community and welcome feedback on the approach. Address: https://ift.tt/WO0VKEq https://ift.tt/WO0VKEq May 27, 2025 at 08:43PM

Head of the Class: Students Embrace Biking and Taking Transit to School

Head of the Class: Students Embrace Biking and Taking Transit to School
By Melissa Culross

Need a ride to class? Muni continues to be a popular option for many students. More San Francisco kids and teenagers are choosing to bike or take public transit to school. According to a new survey of public school students from our Safe Routes to School Program: The number of students who bike has doubled over the last few years More than half of high schoolers take transit to class Single-family car rides have fallen to less than half of all school trips after going up during the pandemic “These numbers show us that our efforts to provide more options for kids to get to and from school are...

Published May 27, 2025 at 05:30AM
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