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Lasm: Write formally verified web apps in Lean, deploy to Node, serverless, edge

https://github.com/Millillion/lasm
1•lastmjs•47m ago

Comments

lastmjs•47m ago
Lasm has been my dream for a good part of 2026.

I firmly believe that formal verification is the next evolution of software engineering and programming languages. This next wave will largely be enabled by the incredibly intelligent LLMs that understand formal verification and its programming languages.

Lean is one of the most popular languages that allow for formal verification, and to me is incredibly powerful because it is a general purpose programming language with formal verification built directly into it.

You can build general purpose software in Lean, and formally verify it in Lean. Amazing.

Lasm brings Lean to the browser, Node, serverless, and edge environments (and more). The idea is that you can now write web apps, frontend to backend, in Lean and formally verify these apps.

Imagine an Express server or Hono server, running on Cloudflare Workers, with formal verification of its specification.

I'm an agentic engineer with an emphasis in software engineering, and Lasm was built mostly by Claude Opus 5.5 with my high-level direction.

I tested 39 LLMs on solving Rubik's cubes with no tools

https://brianbriscoe.dev/blog/i-tested-39-llms-on-solving-rubiks-cubes
1•briscoooe•37s ago•0 comments

From 22 GB to 5.3 GB: all of Hacker News, searchable offline

https://discuss.ai.google.dev/t/searching-all-of-hacker-news-with-embeddinggemma-2-on-a-laptop-49...
1•dmonterocrespo•2m ago•0 comments

Pi Durable on Cloudflare – Earendil

https://earendil.com/posts/pi-durable-on-cloudflare/
1•RebelPotato•2m ago•0 comments

Show HN: StrictLLM – For when you need human-in-the-loop

https://strictllm.com
1•StrictLLM•3m ago•0 comments

UniFi Long-Range Poe Switching

https://blog.ui.com/article/introducing-unifi-long-range-switching
1•ksec•4m ago•0 comments

Evil Qwen

https://ziva.sh/blogs/evil-qwen
1•OsrsNeedsf2P•7m ago•0 comments

Mexico is a showroom for electric vehicles you can't buy in the U.S.

https://www.washingtonpost.com/climate-environment/2026/10/27/i-saw-future-driving-mexico-its-off...
2•bookofjoe•8m ago•1 comments

What's new in Android developer tools and performance

https://developer.android.com/blog/posts/android-dev-summit-26-developer-tools-performance
1•ChrisArchitect•8m ago•0 comments

Endurance Map for Runners, Cyclists and Swimmers

https://zafiri.com/
1•wllrss90•8m ago•0 comments

AI, Lean, and the Future of Formal Verification, with Lean Creator Leo de Moura

https://thedataexchange.media/leo-de-moura-lean-aws/
2•datascientist•9m ago•0 comments

Prompt Layering

https://agentpatterns.ai/context-engineering/prompt-layering/
1•ankitg12•9m ago•0 comments

Your Cryptography Conspiracy Theory Is Wrong

https://soatok.blog/2026/10/29/your-cryptography-conspiracy-theory-is-wrong/
1•iamnothere•10m ago•0 comments

Meta loses appeals against interim measures imposed by French regulators

https://www.reuters.com/world/meta-loses-appeals-against-interim-measures-imposed-by-french-regul...
1•onemoresoop•11m ago•0 comments

Pokerbots.dev – Competitive Algorithmic Poker

https://pokerbots.dev/
1•mundoamundo•13m ago•0 comments

14.4B medical insurance claims refines our understanding of long Covid

https://news.stanford.edu/stories/2026/10/long-covid-health-affects-study-design
1•Anon84•14m ago•0 comments

My Students Can't Read

https://chronicleofhighereducation.substack.com/p/my-students-cant-read
4•rmdmphilosopher•15m ago•2 comments

Show HN: Point your camera at a landscape to learn about its geology

https://outcrop.rocks/
2•headsupernova•16m ago•0 comments

A Typography Geek Pointed Out Something About the Space Shuttle Discovery

https://www.theautopian.com/a-typography-geek-pointed-out-something-about-the-space-shuttle-disco...
1•colinprince•16m ago•0 comments

Building NixOS Using Nixtamal

https://nixtamal.toast.al/cookbook/nixos-using-nixtamal/
2•ndr•17m ago•0 comments

Ask HN: Should I be polite to my agent or should I treat it like shit?

1•d--b•17m ago•1 comments

Systems Thinking Is Vital in the Age of AI

https://spectrum.ieee.org/systems-thinking-vital-in-ai
1•Brajeshwar•17m ago•0 comments

Show HN: ScopeDB Cloud, Serverless event database with pipelined ScopeQL

https://www.scopedb.io/blog/scopedb-cloud-public-preview
1•tison•17m ago•0 comments

What happens when the agent is long gone, but its access key lives on?

https://thenewstack.io/governing-ai-agent-credentials/
1•Brajeshwar•17m ago•0 comments

Google just handed its rivals the keys to Android

https://thenewstack.io/android-agents-build-debug/
1•Brajeshwar•17m ago•0 comments

We ran 384 adversarial probes against 48 agent skills

https://skill123.me/blog/adversarial-probe-results-47-skills
1•hardwoker2013•17m ago•0 comments

Hegseth Fires Top General After Laura Loomer Targets Him

https://newrepublic.com/post/217322/hegseth-fires-top-general-laura-loomer-target
2•MadrasThorn•18m ago•0 comments

No AI, 52 min. Build all Linux Files utils in C by Hand [video]

https://www.youtube.com/watch?v=gQRmSlcTq9c
1•surprisetalk•18m ago•0 comments

The Biggest Hacking Target Is Still "123456"

https://siliconprairies.substack.com/p/the-worlds-biggest-hacking-target
1•JBruggeman•18m ago•0 comments

Show HN: Backend for Agents and Builders who don't need one yet – Statebase

https://statebase.dev
1•bhldev•19m ago•1 comments

Framehand – one sentence in, a branded promo video out (open source)

https://github.com/300SpartanDev/framehand
1•Leosx•19m ago•0 comments