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RAG works well in simple setups, but is it matter once you run in multi-tenant systems.

Many implementations retrieve broadly and rely on filtering later. From a security perspective, that can be uncomfortable. Once data is touched during retrieval, it’s hard to say the system never accessed something it shouldn’t have.

In practice, organizations often have layered access: parent-level policies, branch-level rules, roles, and documents that are only valid for certain periods. If that structure isn’t modeled explicitly, enforcing boundaries becomes inconsistent.

My approach that helped was treating access rules as a gate before retrieval. Only documents that already meet tenant scope, role visibility, and policy constraints are eligible for similarity search.

This reduces the risk of accidental exposure and avoids relying on prompts or model behavior as a security control.

The model becomes a consumer of already-approved context, rather than part of the enforcement path.

It’s less about stronger AI and more about clearer boundaries in the data model.

Interested in how others think about this trade-off in production.

— Arty

Comments URL: https://news.ycombinator.com/item?id=46969515

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Article URL: https://stefano.chiodino.uk/posts/2026-02-10-2026-is-the-year-of-serious-ai-engineering/

Comments URL: https://news.ycombinator.com/item?id=46969513

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Article URL: https://tidewave.ai/blog/the-future-of-coding-agents-is-vertical-integration

Comments URL: https://news.ycombinator.com/item?id=46969512

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Article URL: https://github.com/0x5A65726F677275/AuditDeps

Comments URL: https://news.ycombinator.com/item?id=46969508

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Article URL: https://www.businessinsider.com/elon-musk-xai-loses-second-cofounder-jimmy-ba-2026-2

Comments URL: https://news.ycombinator.com/item?id=46969463

Points: 1

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Article URL: https://www.phoronix.com/news/Chrome-145-Released

Comments URL: https://news.ycombinator.com/item?id=46969452

Points: 2

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Article URL: https://www.youtube.com/watch?v=DCRXWkeoEXs

Comments URL: https://news.ycombinator.com/item?id=46969422

Points: 2

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Article URL: https://newsroom.ucla.edu/releases/how-ucla-scientists-helped-reimagine-a-forgotten-battery-design-from-thomas-edison

Comments URL: https://news.ycombinator.com/item?id=46969420

Points: 1

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Article URL: https://rivian.com/r2

Comments URL: https://news.ycombinator.com/item?id=46969399

Points: 2

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Why does every camera tool try to sell me something? I wanted a "remote control for the physical world."

ScanDo is a minimalist Android/iOS utility that bypasses the "search result" stage entirely. Using local LLMs, it parses the camera feed and presents exactly one action button at the bottom.

QR code for Wi-Fi? Connects you.

Paper invoice? Deep-links to your banking app.

Handwritten date? Creates a calendar invite.

The goal is to minimize time-to-action. I'm curious if the HN community thinks "Ambient Intelligence" tools like this will eventually replace the standard utility app model.

Comments URL: https://news.ycombinator.com/item?id=46969394

Points: 1

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Article URL: https://carbonplan.org/research/climate-risk

Comments URL: https://news.ycombinator.com/item?id=46969390

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Article URL: https://www.youtube.com/watch?v=Z5rCogD4e2k

Comments URL: https://news.ycombinator.com/item?id=46969367

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Article URL: https://developer.chrome.com/blog/webmcp-epp

Comments URL: https://news.ycombinator.com/item?id=46969359

Points: 2

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Hi HN,

Over the past few days I built a small client-only web app that turns a name (or multiple names) into a deterministic color gradient.

The idea was to treat names as identity-rich input and map them to a repeatable visual “fingerprint.” The same input always produces the same gradient — no randomness, no accounts, no backend. Everything runs in the browser.

Under the hood, the app normalizes the input text, hashes it, and uses the result to seed a PRNG that drives color selection and layout. Because of that, even small changes (adding a middle name, punctuation, multiple names, etc.) result in noticeably different gradients, while staying perfectly stable across reloads and devices.

You can switch between a few gradient styles (linear, radial, blob), optionally add grain, and export the result as a PNG in common sizes. URLs are shareable and reproduce the exact same output.

This was partly an experiment in deterministic generative design and partly an excuse to practice shipping something small and polished quickly. I’d love feedback — especially around the concept, the determinism approach, or things that feel off or unnecessary.

Thanks!

Comments URL: https://news.ycombinator.com/item?id=46969349

Points: 1

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Article URL: https://github.com/anthrofract/jjdag

Comments URL: https://news.ycombinator.com/item?id=46969342

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Article URL: https://www.scientificamerican.com/article/rules-of-mysterious-ancient-roman-board-game-decoded-by-ai/

Comments URL: https://news.ycombinator.com/item?id=46969340

Points: 1

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Article URL: https://modem.dev/

Comments URL: https://news.ycombinator.com/item?id=46969300

Points: 2

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Article URL: https://www.bleepingcomputer.com/news/security/zerodayrat-malware-grants-full-access-to-android-ios-devices/

Comments URL: https://news.ycombinator.com/item?id=46969299

Points: 1

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Article URL: https://nerfedornot.com

Comments URL: https://news.ycombinator.com/item?id=46969241

Points: 2

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Article URL: https://nesbitt.io/2026/02/10/lockfiles-killed-vendoring.html

Comments URL: https://news.ycombinator.com/item?id=46969059

Points: 1

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