Hacker News

I built ipinsights.io — a free IP intelligence service that gives you geolocation, ISP data, blacklist status and a risk score for any public IP address.

The problem I kept hitting: most IP lookup tools are either paywalled after a handful of queries, return stale data, or both. I wanted something I could hit from a script at 2am without worrying about rate limits or reaching for a credit card.

How it works:

- Enter an IP and get back geolocation (country, region, city, coordinates, timezone), ISP/org data, and a threat assessment. - The threat data is cross-referenced against 24+ blacklist sources, refreshed every 4 hours. - Nearly 300k blacklisted IPs indexed currently, growing with every cycle. - Free API — register for a key and integrate it into whatever you're building.

The stack is PHP on Apache/Ubuntu with MySQL and Redis. Nothing exotic.

It's free and will stay free. No freemium trap, no "enterprise tier coming soon". The more people using it and feeding back, the better the intelligence gets for everyone — it's a network effect thing.

I'd appreciate any feedback on the tool, the API, or the data quality. Happy to answer questions about the architecture or the threat sources.

https://www.ipinsights.io/

Comments URL: https://news.ycombinator.com/item?id=47101743

Points: 2

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Article URL: https://lemmy.blahaj.zone/post/38891125

Comments URL: https://news.ycombinator.com/item?id=47101431

Points: 1

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Article URL: https://www.simonbinder.eu/posts/dart2wasm_library/

Comments URL: https://news.ycombinator.com/item?id=47101426

Points: 1

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Full disclosure: I'm an engineer.

I think you'll find the framing to be intuitive, useful and scary. It allows for elegant explanations for normal and abnormal brain phenomena. Dreams, depression, flow states, hypnosis, deja vu, drugs and so on.

Comments URL: https://news.ycombinator.com/item?id=47101419

Points: 1

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Article URL: https://taskandpurpose.com/news/army-warrant-officer-bonus-auction/

Comments URL: https://news.ycombinator.com/item?id=47101384

Points: 2

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Article URL: https://birchtree.me/blog/apple-will-kill-ipados/

Comments URL: https://news.ycombinator.com/item?id=47101357

Points: 2

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Article URL: https://github.com/anthropics/claude-code/issues/27430

Comments URL: https://news.ycombinator.com/item?id=47101336

Points: 2

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Article URL: https://github.com/johnkerl/miller/releases/tag/v6.17.0

Comments URL: https://news.ycombinator.com/item?id=47101320

Points: 1

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Article URL: https://github.com/selvaprakash/ai-placebo-differential

Comments URL: https://news.ycombinator.com/item?id=47101302

Points: 1

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Article URL: https://www.theatlantic.com/culture/2026/02/pressure-olympics-malinin-shiffrin/686097/

Comments URL: https://news.ycombinator.com/item?id=47101271

Points: 1

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Article URL: https://github.com/prodlint/prodlint

Comments URL: https://news.ycombinator.com/item?id=47101264

Points: 1

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One of the things that is stupid about the internet is domain name squatting. People find a potentially good domain name, buy it, have it sit there and maybe someone will buy it so you make an enormous profit.

We need a way to fix this. A lookup site to find and disambiguate entities on the internet. For example what if I could type in to Firefox the name of my old friend fred jones and find not fredjones.com but some way to first find the right fred, then creating a personal for-me-only mapping of the site and "fredjones"

Do you have any thoughts about this?

Comments URL: https://news.ycombinator.com/item?id=47101258

Points: 1

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We[1] take privacy very seriously and we understand that the end game usually ends up being empty words: in the end, companies sell or monetize their user data, or use it for annoying or invasive advertising, regardless of the reason it was collected in the first place.

Although we have a different model (sovereign nation, currently acknowledged by our server provider in Estonia, our embassy lease, and reciprocally with another nation[2]) we are rather skeptical about collecting user statistics of any kind.

Nevertheless, it seems to be necessary for data science purposes. What do you think we should do?

- Your comments directly inform our policy.

- Your silence (such as if this post doesn't get comments) does not denote your consent.

[1] State of Utopia ( stateofutopia.com and will be at stofut.com for short), sovereign AI-governed digital nation acting in the best interests of its citizens and providing expected state services, while also owning some state-owned companies. Check it often for updates.

[2] We have a full manifesto here: https://claude.ai/public/artifacts/d6b35b81-0eeb-4e41-9628-5d53fed072f0

Comments URL: https://news.ycombinator.com/item?id=47101246

Points: 1

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I just received an email from ZoomInfo to an address previously not linked to me. A good reminder to remove [0] yourself from these systems.

[0] https://www.zoominfo.com/trust-center/your-privacy#Request-Removal/Deletion-from-ZoomInfo-(Opt-Out-of-Sale-and-Sharing)

Comments URL: https://news.ycombinator.com/item?id=47101234

Points: 2

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I built an open source CLI that analyzes TypeScript codebases using the TypeScript AST (via ts-morph) and extracts structured architectural contracts and dependency graphs.

The goal is to create a diffable architectural map of a codebase and detect breaking interface changes during refactors.

It includes a watch mode for incremental rebuilds and a strict mode that flags removed props, functions, or contracts.

Fully local, deterministic output. No code modification.

I’d appreciate technical feedback from anyone working on large TypeScript codebases.

Repo: https://github.com/LogicStamp/logicstamp-context Docs: https://logicstamp.dev/docs

Comments URL: https://news.ycombinator.com/item?id=47101230

Points: 1

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Hi HN,

I built MailCat because my AI agents kept getting stuck at "please verify your email."

The key insight: if your AI agent can read documentation, it can set itself up.

Just paste this into Claude Code, OpenClaw, or any AI agent:

"Read https://mailcat.ai/skill.md and set up a MailCat mailbox for yourself. Save the token securely." That's it. Your agent reads the skill.md, creates a mailbox via API, and handles email verification autonomously from there.

What it does: - Instant mailbox creation via API - Verification codes auto-extracted from emails - 1-hour retention (perfect for verification flows) - Fully open source (MIT) and self-hostable

Built with Cloudflare Workers + D1 + KV. Self-host in ~10 minutes.

GitHub: https://github.com/apidog/mailcat

Happy to answer questions about the architecture.

Comments URL: https://news.ycombinator.com/item?id=47101217

Points: 8

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Location: India Remote: Yes!, but can do on-site/hybrid in Pune Role: Frontend/Software/Founding engineer full-time Willing to relocate: Yes, but want visa sponsorship.

Technologies: Languages & Frameworks: TypeScript, JavaScript, React, Next.js, Node.js Databases & State: MongoDB, SQL (PostgreSQL/MySQL), Redux Toolkit, React Context API UI & Frontend: Material-UI (MUI), Tailwind CSS, SCSS, HTML5/CSS3, Responsive UI/UX Design DevOps & Tools: Docker, Keycloak (Auth), Jest, gRPC, REST APIs, Git, GitHub, Agile (Scrum) AI & LLM Ops: Local LLM Deployment (Ollama, vLLM), Model Quantization, Private Cloud AI Infrastructure, Stable Diffusion Résumé/CV: https://docs.google.com/document/d/1sd7iwTgXVG2EwuOHnNxCx-MTuMhUi_Vjgfo6FCp1rR4/edit?usp=sharing Email: gauravsharma.mern@gmail.com Github: https://github.com/GauravFrontend I’m a Frontend Engineer with 2 years of experience, I work daily with React, TypeScript, Next.js, Node.js and have shipped production features.

here are some things i am proud of -

- building chat with your docs, and something more - At Flipr, I optimized rendering by 70% for massive, 250+ page document platforms. - I don’t just build UI; I’ve architected RBAC systems and integrated gRPC communication for 30% faster data sync. - I’ve worked on AI-driven recruitment tools and local LLM deployments (Ollama/vLLM), so I can help integrate AI features into your frontend.

I’m currently looking for my next challenge where I can take full ownership of the frontend and backend to contribute to the overall architecture.

Comments URL: https://news.ycombinator.com/item?id=47101213

Points: 2

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Most solo developers spend 90% of their time writing code and 10% on everything else. After a few years of building indie products — some failures, a couple that found traction — I've tried to document the framework I wish I'd had earlier.

The framework has four phases: clarify, build, grow, monetize. None of it is novel. The value is in applying it in order, because most failures happen when you skip the first phase and go straight to the second.

Clarify first. Before writing code: who exactly are you solving a problem for, and what problem are you solving? The answer needs to be specific enough to function as a filter for future decisions. "Productivity software for remote workers" is not an answer. "A tool that helps freelance developers track billable time without switching contexts" is closer.

Once you have that, validate the problem using a simple heuristic: Frequency × Intensity × Scale. A problem that's frequent, painful, and affects many people is real. A problem that scores high on only one dimension is usually not worth building around. Also: what users say they want and what they actually do are different. Design around behavior, not stated preferences.

Competitive research belongs here too. The 1-star reviews on app stores and complaint threads in relevant communities are a map of unmet needs. That's your opportunity space.

Build less, ship sooner. The right unit to build is the minimum thing that lets a real user accomplish the core task. Every feature beyond that is a liability until it's validated. The goal is to shorten the loop: build → ship → real user feedback → iterate. Most indie products fail because this loop is too slow, not because the underlying product is bad.

Grow through content and community. Paid acquisition before you've validated the model is expensive and usually misleading. Content that addresses real problems in your domain compounds over time. Community participation — being genuinely useful in places where your target users already are — builds trust that converts at higher rates than ads. The practical version: write about problems you've actually solved. Show up consistently. Don't make every post about your product.

Charge before you feel ready. Delayed monetization is usually a form of avoiding the most important feedback signal. If nobody pays, that tells you something essential — and you want to learn it as early as possible, not after six months of building. Think through the unit economics: LTV needs to exceed CAC, or you don't have a business yet. Retention matters more than acquisition. Track the metric that best reflects whether users are getting value, and let that drive decisions.

The short version: define who you're solving for, validate before building, ship in small increments, and charge for your product sooner than feels comfortable. The hard part isn't technical — it's the discipline to do the unsexy work before the fun work.

A note on the sequencing: most indie product failures I've seen — including my own — share the same pattern. The builder had a problem they wanted to solve, skipped the validation phase, built for months, shipped, and discovered either that nobody wanted it or that the people who wanted it wouldn't pay. The fix is not to become a business person instead of a developer. It's to do a small amount of structured thinking upfront and revisit it regularly as you learn. The code is the easy part.

One resource I'd point to: Rob Fitzpatrick's "The Mom Test" for the validation phase. The core idea — ask about problems, not solutions, and watch behavior rather than taking stated preferences at face value — has saved me significant amounts of time building things that turned out not to matter.

Comments URL: https://news.ycombinator.com/item?id=47101212

Points: 2

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Article URL: https://safedep.io/npm-sandworm-mode-supply-chain-attack/

Comments URL: https://news.ycombinator.com/item?id=47101205

Points: 1

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Article URL: https://arxiv.org/abs/2312.16890

Comments URL: https://news.ycombinator.com/item?id=47101203

Points: 1

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