Show HN: DreamGraph MCP v5 – An open source autonomous cognitive layer https://ift.tt/Swk6bt9

Show HN: DreamGraph MCP v5 – An open source autonomous cognitive layer https://ift.tt/8IuNdvf April 1, 2026 at 07:16AM

Show HN: TraceLit – debug LeetCode step by step https://ift.tt/oyhc8zX

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 step through execution line by line. It helps you see variable changes, control flow, and where things start going wrong. It’s especially useful for recursion, trees, linked lists, and simulation-style problems. You can try it here: https://tracelit.dev No signup required. I’d love feedback on which problem types this feels most useful for, and what feels confusing. https://tracelit.dev/ April 1, 2026 at 04:36AM

Show HN: CLI to order groceries via reverse-engineered REWE API (Haskell) https://ift.tt/zL27UpK

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 create OpenAPI spec automatically. And then 2026 feels like the perfect time writing Haskell. The code is handwritten, but whenever I got stuck with the build system or was just not getting the types right, I could fall back to ask AI to unblock me. It was never that smooth before. Finally the best side projects are the ones you actually use and this one will be used for all my future grocery shopping. [1] https://ift.tt/84pjYgx https://ift.tt/P7tJOAu March 30, 2026 at 03:45AM

Show HN: Raincast – Describe an app, get a native desktop app (open source) https://ift.tt/SmqpX8n

Show HN: Raincast – Describe an app, get a native desktop app (open source) https://ift.tt/8kKl2Ls March 31, 2026 at 02:39AM

Show HN: Will AI take my job https://ift.tt/H7eh0Bp

Show HN: Will AI take my job https://ift.tt/UFMaoeB March 31, 2026 at 12:43AM

Show HN: I turned a sketch into a 3D-print pegboard for my kid with an AI agent https://ift.tt/B20oWsu

Show HN: I turned a sketch into a 3D-print pegboard for my kid with an AI agent We have pegboards and plywood all over our apartment, and I had an idea to make a tiny pegboard for my kid, Oli. So I naturally cut the wood, drilled in the holes, sat down at the computer to open Fusion 360 and spend an hour or two drawing the pieces by hand. Then I looked at the rough sketch Oli and I had made together, took a photo of it, pasted it into Codex, and gave it just two dimensions: the holes are 40mm apart and the pegs are 8mm wide. To my surprise, 5 minutes later my 3D printer was heating up and printing the first set. I ran it a few times to tune the dimensions for ideal fit, but I am posting the final result as a repository in case anyone else wants to print one, tweak it, or have fun with it too. I am already printing another one to hang on our front door instead of a wreath, so people visiting us have something fun and intriguing to play with while they knock. This is also going onto my list of weird uses of AI from the last few months. https://ift.tt/DfUpOR0 March 30, 2026 at 08:20PM

Show HN: The Alphabetical Clock https://ift.tt/igswF2T

Show HN: The Alphabetical Clock https://ift.tt/46518iy March 30, 2026 at 04:19AM