
Authoryze: Your agent never sees your real card
Authoryze gives each agent purchase a single-use virtual card. A breach leaks one disposable card, not your funding source.
kevinfee · HN
Authoryze- payment controls for AI agents
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Authoryze gives each agent purchase a single-use virtual card. A breach leaks one disposable card, not your funding source.
kevinfee · HN
Authoryze- payment controls for AI agents

Test the Jovethra OpenAI-compatible API in a browser playground without signing up.
Belius · HN
Jovethra – prepaid OpenAI-compatible API with hard usage limits

Learn English vocabulary with a no-login, ad-free website that stores all progress locally in your browser.
yuanyuan11 · V2EX
一起来背单词吧! 平时看文献、写论文都离不开英语,词汇量一直是个绕不过去的坎。市面上背单词的 App 不少,扇贝、百词斩、墨墨之类的我也都用过,但是总有些地方不太舒服,得登录、有广告、打卡提醒烦人,还老是惦记着你的数据。作为一个喜欢自己重复造轮子的让,我写了一个背单词的网站,自己需要什么功能就写什么功能。 纯静态网站,部署在 GitHub Pages 上,数据全部存在你自己的浏览器里,这可能也是我最喜欢的服务部署方式了哈哈哈。地址:[jiaoyuan.org/recite]( https://jiaoyuan.org/recite/),源码在 [GitHub]( https://github.com/imjiaoyuan/recite)。 ## 一次完整的背诵流程 打开首页,是一排词表卡片,每个词表一张。卡片上写着总词数、今天到期要复习的词有多少、还能新背几个,下面一条进度条显示你背到哪了。想背哪个点进去就行。 每张卡片先是正面:英文单词、音标、词性,点一下单词或小喇叭可以发音。你在脑子里想过意思之后,按空格(或点按钮)翻开,背面是中文翻译、英文释义和一条例句。

Edit photos with text prompts and generate images with AI—free, no sign-up required.
PicEditor — AI 图片编辑和生成工具,用自然语言换背景、移除物体、修改图片文字或生成新图,首次使用无需注册

Free privacy and security tools that run entirely in your browser
@VaultY796 · X

Share a link to collect voice or text answers with AI-powered follow-up questions.
u/Flimsy_Leg_2158 · Reddit
I wanted something between a form and a call, so I built it I’ve been building AI automations for small businesses, and I kept running into the same problem in completely different workflows. Client intake, candidate screening, maintenance requests, customer interviews, questionnaires. Underneath, they were all basically the same: Someone needs information from another person, and the other person needs an easy way to give it. Usually that means a form or a call. For

Free tool to generate better AI prompts instantly without signing up.
v_a_f_x · Product Hunt
Finmaticx Prompt Generator Create Better Prompts. Get Better AI Results.

Interfaces for Claude, Codex, and Grok built with shadcn UI components.
theswerd · GitHub
brainless Claude Code, Codex, and Grok interfaces as shadcn components

200+ free browser-based tools for invoicing, rentals, online selling, and real estate—no signup needed.
u/Cryingpinaple · Reddit
Built a free toolkit that grew into 5 sites, 200+ tools, no signup required I started this a few days ago to build a free invoicing tool for freelancers because everything I found was gated behind a signup wall or a "free trial." It turned into a small portfolio of 5 sites, each aimed at a different kind of solo operator: Ledgerline: invoicing, contracts, and tax calculators for freelancers Rentline: rent increase letters, late fee calculators, and lease guides for landlords Sellerline:

Humanize AI text and detect AI-generated content, plus process PDF files without signing up.
@varu_jigar · X
Building Toolyzo — an all-in-one AI productivity hub. ✅ AI Detector ✅ AI Humanizer ✅ PDF Tools ✅ Resume Builder Coming soon: Coding AI Agent AI Image Detector Watermark Remover ...and more. No signup required for most tools. 🌐

All-in-one app for nutrition, fitness, and focus management with an AI copilot, available at $1/mo.
@alextechhub · X
Built this app to replace subscriptions I paid, and I think it could get some traction

Mount what your model was never trained on. Unmount it when you're done. Sealed, signed, measured knowledge packs for local models.
@developerpranab · X
YantrikDB: mountable knowledge for local models. A 4B scores 7/53 on the MCP spec published this week; 42/53 with the pack mounted. No retraining.