Show HN: A sandboxed AI agent that can watch webpages without constant API calls It can also adapt by creating its own tools if its 60+ built in tools fall short. It runs in a debian docker container with chromium and you interact with it through th…

Show HN: TraceLit – debug LeetCode step by step I built TraceLit because I was tired of manually dry-running LeetCode problems, especially trees and recursion problems where it’s easy to lose track of execution. You paste code and input, run it, and…

Show HN: CLI to order groceries via reverse-engineered REWE API (Haskell) I just had the best time learning about the REWE (German supermarket chain) API, how they use mTLS and what the workflows are. Also `mitmproxy2swagger`[1] is a great tool to c…

Show HN: Fingerprinting browser-impersonating bots w/o JavaScript (open spec) I've published an open specification for a detection method I'm calling RQ4 (Request Context Fingerprinting). It analyzes whether HTTP request headers are logicall…

Show HN: HN Sieve – AI scores every HN project so you don't miss the good ones https://ift.tt/QItk6OW March 30, 2026 at 07:44PM

Show HN: ConvertPNG2JPG – A 100% free, client-side image and PDF converter https://ift.tt/MrJQDVO March 30, 2026 at 02:54AM

Show HN: IsDisposable – Open-source disposable email detection (160K+ domains) https://ift.tt/qWTHkvf March 30, 2026 at 01:21AM

Show HN: The Alphabetical Clock https://ift.tt/jZOVSgx March 30, 2026 at 12:19AM

Show HN: Sheet Ninja – Google Sheets as a CRUD Back End for Vibe Coders https://sheetninja.io March 29, 2026 at 04:42AM

Show HN: WhatToBuy – Describe your situation, get AI-curated shopping carts Before reading text please try the app https://www.whattobuy.app (to get great UX feedback) Shopping research is one of the most challenging tasks and people spend 30-60 min…