I've been building promptslice.com as a way to create, test, and optimize prompts + tools + context. I needed it when building agents for other use cases so I built it. Unlike Langsmith and some of the other prompt editors, this has a first class editor for your prompt with "Cursor style" chat where you can ask it to make tweaks, overhaul sections, optimize ambiguity, etc.
Ask HN: What are you working on? (July 2025)
321–330 of 900 posts
Re: Ask HN: What are you working on? (July 2025)
#322Working on fabric construction blocks (like Lego of clothing), that you can use to build clothing and accessories completely by hand without any tools or machines. Intro video: https://www.youtube.com/watch?v=X_eKc6c5tDw
ah this is fascinating!!!! Any more info anywhere?
Re: Ask HN: What are you working on? (July 2025)
#323An LLM coding cli tool, not agentic, not small primitives to make navigating code base and coding easy and fast. I won't say the future isn't agentic, but I'm still having fun doing it manual.
Re: Ask HN: What are you working on? (July 2025)
#324Have you ever wanted to write your life story but found it too overwhelming? I’m developing an app that acts as your personal interviewer, guiding you through your memories and helping you share them with your loved ones. The app is designed for older adults who enjoy reminiscing but struggle to organize their thoughts into a coherent narrative. The goal is to preserve their hard-won insights and pass them down—to fa…
Sounds really cool! Best of luck. Do you have a website or samples/demo yet?
Re: Ask HN: What are you working on? (July 2025)
#325I am working on DataGrid Toolkit. Based on my experiences building and selling (Excel like) data grids, people always look for your data grid, "but can it do this"? With DataGrid Toolkit, a developer can choose his own building blocks/modules and make a more Excel-like data grid, or make a more DataTables style traditional paginated table. The toolkit is headless and stateless by design and comes with different rende…
Have you checked out MUI’s DataGrid component? It works great, but some important-to-some functionality is locked behind the paid versions.
Re: Ask HN: What are you working on? (July 2025)
#326I'm instrumenting my CLIs with OTEL traces and working on usefully visualizing the JSON output.
Fun so far!
Re: Ask HN: What are you working on? (July 2025)
#327I'm working on a GitHub + Slack bot to let organizations customize and get notifications on Slack from GitHub.
I've tried using the official GitHub Slack integration (https://github.com/integrations/slack) but found it limiting and unmaintained by GitHub. For example, at the companies I've worked at, we want to get notifications sent to a specific channel when there are deploys to the "production" environment on GitHub. The official integration doesn't let you filter events by environment, so it's all or nothing. Your Slack channel for production releases will be filled with staging and qa notifications.
I designed it so users can filter on essentially any field of any event - deployment environment, branch patterns, file paths, PR labels, commit authors, etc.
It's at chivesbot.com as a hosted service, however, the signups are disabled right now as I'm working on some core features, but here are a couple of screenshots of the filter creation: https://imgur.com/a/pSiolWu
I'm looking for early beta users and feedback, so if this problem resonates with you, my email can be found in my profile.
Re: Ask HN: What are you working on? (July 2025)
#328I finally completed my self published beginner Android programming book earlier this year. I took a break and now I'm working on updating it to add more Kotlin examples.
I wrote the book in markdown and used Pandoc to convert it to print ready PDF.
Re: Ask HN: What are you working on? (July 2025)
#329My business partner and I are building an AI-powered lead gen platform that allows you to request leads directly from Slack for a variety of roles. Most mature sales orgs have really in-depth CRMs that can serve this purpose (Apollo etc) but smaller teams generally don’t. We’re here to fill that gap.
It’s called Wednesday.
Check it out: https://wednes.day
Re: Ask HN: What are you working on? (July 2025)
#330In a Lua scripting framework to:
- enforce non-globals
- project hierarchy (for tests and documentation)
- cli access for .md package docs
- installation in path
- extension of Lua stdlib (fs.mkdir, os.realpath)
- module autoloading/lazyloading
Expected support for Lua 5.4 and luajit. At first entirely in Lua with long term goal to compiled Lua modules (merging Wax)
The goal is to make Lua the first choice for system scripting in POSIX systems for Lua users without thinking twice between Lua, Sh and other tools like Python, Ruby etc.
I have many system scriptings in Lua but not in a easy way of reusing libraries. Also I don't like to think in creating Luarocks packages or deal with unstandardized ways to write code.