
Playground — Fabraix
Test your prompt injection skills against AI agents in an interactive competitive challenge.
ibrahim_abdu777 · HN
We are giving away $100K > over the next 12 months to hack AI agents
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Test your prompt injection skills against AI agents in an interactive competitive challenge.
ibrahim_abdu777 · HN
We are giving away $100K > over the next 12 months to hack AI agents

Create lessons, worksheets, and quizzes using AI tools to streamline your teaching.
TeachAny — 使用 TeachAny AI 工具,简化您的教学 - [更多功能](https://www.teachany.com/tools)

AI career agent for building resumes, tailoring job applications, and practicing interviews.
@gududubey · X

Create personalized weekly learning plans for children's long-term goals in chess, swimming, music, or languages.
@EICWOGUP · X
Hey James, I am building that helps parents focus on their kids long term goals. Parents don’t have to be fluent on any skills to teach kids. All they have to do is choose the goal like chess, swimming, trachtenberg math, yoga etc and you get weekly list.

Create ATS-friendly resumes with AI, generate cover letters, track applications, and prep for interviews.
@buildwithsubodh · X

Create custom resumes and portfolios with AI, no templates required.
@jaura_id · X
Hi! ⚡️ Building right now—an agentic AI resume maker that acts like a proactive career agent rather than just a basic template editor. Literally just hit Day 1 of my #BuildInPublic journey today. Let's connect! 🙌

Design grainy gradients by dragging through an infinite world and export up to 5K.
@Jellede_v · X
Currently working on Gradients made easy & satisfying 🤗

Track your placement prep by practicing DSA patterns with ChatGPT-powered guidance.
@8876sahil · X
If you tired of random DSA videos and unstructured placement prep. You can try trackMe a free placement tracker. Practice DSA pattern-wise, prepare topic-wise, and learn with ChatGPT. Feedback welcome. Share if useful

Play 7 Takes, a card game of nerve and memory, against an AI dealer.
u/termicrafter16 · Reddit
A friend taught me a Slovenian card game two days ago. GPT-5.6 Sol helped me turn our argument into an AI opponent. Two days ago, a friend taught me Sedmice, a traditional card game we play in Slovenia. The rules are simple, but we quickly got into an argument about the best moves. Naturally, I decided the reasonable way to settle it was to build an AI opponent. I wrote out the rules, project specification, architecture, and implementation details, then handed the logic to GPT-5.6 Sol. Ab

AI-powered debate arena where you compete and receive skill ratings for your argumentation.
u/Bakari2Sense · Reddit
Built a persistent skill rating for debate, like a chess rating but for argumentation I built a persistent skill profile for debate called the Debate Fingerprint. Would love feedback. [Founder disclosure: I'm Bakari, building 2Sense at app.2sense.ai] The idea: every debate you complete scores you across 6 dimensions (Logic, Structure, Responsiveness, Persuasion, Emotional Control, Clarity) on a 0-1000 scale. The scores persist across all your debates and build a visual profile over time

Interactive demo for experimenting with grading mechanics.
@TheEduardoRFS · X
I vibe coded a demo for grading, not in a great shape but it's fun to play a bit.

Quality management system helping AI medical device startups achieve regulatory clearances.
@ZachInSpace · X
Launched a month ago