
ClaySeal Arena — Prompt-Injection CTF
A capture-the-flag game where you use prompt injection to make AI agents break their rules.
yuvvantalreja · HN
I Built a Capture the Flag Arena for Agents
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23 projects

A capture-the-flag game where you use prompt injection to make AI agents break their rules.
yuvvantalreja · HN
I Built a Capture the Flag Arena for Agents

Generate professional documentation for startups without coding or complex setup.
@hannah24_app · X

AI-guided mental fitness sessions with breathing, grounding, and focus exercises in your browser.
@LenvanderHof · X
Building - Experimental, EMDR-inspired, AI-guided, advanced mental fitness sessions and gamified micro-courses. Let's connect!

Create narrated training videos from PDFs and documents using AI-generated slide decks.
u/No-Tap6993 · Reddit
I built a slide deck video builder Most AI generated visual can look like slop. I built a slide deck video builder for training content. It generates beautiful slide decks from 18 templates, adds voice over, allows post editing, and finally export to mp4. Check it out at https://inkbolt.ai and let me know what you think! I have to give a shout out to this repo for inspiring how to do design properly with AI. https://github.com/zarazhangrui/frontend-slides submitted b

Transform learning materials into practice exercises, analysis, and study plans.
璞奇 — 将书本、B 站、得到等学习内容生成练习,帮助掌握新知,支持 App、Chrome 插件和 Agent Skill - [更多介绍](https://mp.weixin.qq.com/s/HRRpKg2oAt_toZNTpY-foA)

Record, edit, and share interactive product demos with a browser extension or CLI, with guided tours and engagement tracking.
@haukejung · X
Need interactive demos showing your product in action? Try

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.

Type a topic to generate a finished documentary video in under a minute using AI.
pw · HN
Hiya! So I've been playing around with having Claude make videos for a bit now even had some success posting the results to TikTok (and setup a whole pipeline so Claude can generate and post autonomously). With the release of Nano Banana 2 Lite, I was curious show fast I could make the generation, so last night I gave it a whirl and got down to around 30s for short-form video. It uses GLM-5.2 fast via Fireworks to generate the scripts and image prompts and, like I said, Nano Banana 2 Lite for the images, gpt-4o-mini-tts for the narration, and ffmpeg to string it all together and add the Ken Burns zoom effect (which still has a shake I haven't been able to get rid of). The video compilation proved to be the blocker once the rest was in place, but I was able to speed that up by putting it on a 64 vCPU EC2. The cost might be the most interesting aspect as the short form videos tend to be about 25 cents. Almost 90% of that is the images, which are 3.336 cents a piece. Of course, running

AI coach for daily missions and mental toughness training inspired by Navy SEAL discipline.
@HoodedMaverick · X
I Built an AI David Goggins Coach 👉

Take AI-powered skill assessments to verify your knowledge and earn certifications.
@syprayt · X
We are building platform to verify user knowledge using AI, so you can avoid boring lectures and save years of life. It’s Academission baby. Yesterday we launched online mode, so that everyone could test our technology, here is the link:

Book 1:1 video coworking with real people and structured session goals.
@indie_rok · X
Built with codex: An app for coworking in group, it pairs you with people to cowork together while gamifing the process: