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rgbrgb

4,505 karma · joined November 29, 2010

I'm Peter Sugihara. I co-founded Open Listings (YC W15, acquired by Opendoor).

Computing on data with https://setoku.com

Helping people find their life's work w https://www.hedgy.works

W: https://campsh.com

T: https://twitter.com/_0_

YC Badge: 0x2363643a1bf43fe9d8fbc0630c706003b4e062bf

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rgbrgb··on Show HN: Rhun, an open-source code editor written in assembly
can you talk about why you do this in assembly?
rgbrgb··on Jeeves. Reasoning improves Jev-like decision models
openai's new Decisions API looks to be targeting that https://openai.com/index/devday-2026-recap/
rgbrgb··on Ollaya – Ollama for open-source, Jev-style decision models
there's this thing with a bunch of similar models https://huggingface.co/spaces/multimodalart/jev-decision-ind...

top open one is trained by perplexity cto for $3k, kinda cool https://x.com/denisyarats/status/2102252088067850507

rgbrgb··on Rails World 2026 Opening Keynote [video]
shopify agrees https://shopify.engineering/back-to-native
rgbrgb··on Creatine uptake enhances antitumor immunity
worth noting that there’s evidence both ways… tumor cells may like it too:

- Loo et al. 2015 found color cancer cells can use it as fuel and blocking the creatine cut metastasis in mice [0]

- zhang et al 20921 found it promoting mouse colon and breast cancer models [1]

not an expert in any way, but i’m guessing it depends on cancer type and there doesn’t seem to be human data either way. as a cautious person w a lot of familial cancer, i cycled off after i looked into it.

[0]: https://pubmed.ncbi.nlm.nih.gov/25601461/

[1]: https://doi.org/10.1016/j.cmet.2021.03.009

rgbrgb··on Contrastive Language Models
beautiful. would love to see it on some leaderboard

https://benchmarkheaven.com/jev-models

https://huggingface.co/spaces/multimodalart/jev-decision-ind...

rgbrgb··on Contrastive Language Models
what's wrong w "system one"? it feels like a good frame to think about use-cases that will fit jev etc.
rgbrgb··on Ask HN: Do you offload your coding to AI, or keep your skills sharp?
imo the valuable thing we bring as software engineers is and has always been solutions to problems with the contextually correct quality/speed/cost tradeoffs. with agentic coding, these factors all shift and we're all in the process of recalibrating. namely the speed dial can now be shifted way down.

to answer directly, i live in claude code now. and while it's a different shape of daily work, i'm still engineering, still evaluating those 3 factors and figuring out how to triage and solve user-problems much faster than i could 5 years ago.

rgbrgb··on Jev in 25 Lines of Python
i love that people are trying to make OS jevs but what is the point of doing all this work and not ask your coding agent to do a little benchmarking. selfishly want an open weight model to beat jev here

just found this one https://huggingface.co/spaces/multimodalart/jev-decision-ind...

rgbrgb··on MCP was always a bad idea?
most users i'm dealing with are not doc-reading developers. even getting them to tell claude to use tool X is pretty hit or miss whereas claude already knowing what tool to use is 100% hit with correct mcp tool descriptions.
rgbrgb··on Kev: Tiny Jev-like family of decision models built on top of Qwen3.5
love this idea. did you try comparing to jev?
rgbrgb··on MCP was always a bad idea?
it's mostly true but the mcp also installs the knowledge of that REST API in a standard way so that a user can ask "what's projected revenue this month?" and it'll know how to hit your company brain and answer
rgbrgb··on Laya the open source version of Jev
It can’t do images but it can do a pretty good job of triaging urgency or choosing when to escalate. So I’d guess yes but it depends how detailed your classification is.
rgbrgb··on WalShadow: Sub-second Postgres replication to ClickHouse from physical WAL
would this work with a postgres hosted on supabase? for our company brain mcp thing we mirror postgres data (along with server logs, banking data, slack, etc) in clickhouse but took a very inefficient polling approach since it works with any read-only db connection string. always looking to improve that and get rid of latency though.
rgbrgb··on Learning Programming in an Age of LLMs
I've been thinking about this in the context of learning new languages and tech. In pre-LLM days it was fun to sometimes try to implement a new idea in a new language or stack and build up an understanding by trial and error. You'd have to accept that it will be slower to get going than a familiar set of tools and maybe only trade out one old tool at a time in this way.

Now the pace of dev with something new is so rapid and fun that it's hard to not skip even basic things with a new stack. I swapped postgres (old reliable) for clickhouse (first use) in a project and saw a massive speedup of my workloads, but I really have to go down the socratic rabbit hole to understand why and even then it's a different level of understanding vs having to read the readme, quickstart, install it myself, rewrite queries by hand. TBH though, pre-LLM I probably would have just plodded along with postgres and built a hacky auto-indexer thing, so in a way the agentic coding helps me explore more territory but encourages less depth.

No strong conclusions. Like OP, I'm just spitballing / trying to understand this new world too.

rgbrgb··on Claude Cowork and chat are now one Claude
maybe someone wrote a classifier (or LLM wrapper) to find posts that will rank on hn
rgbrgb··on New $100k H-1B visa fee pushes tech jobs offshore
these were not average employees - top decile engineers i've worked with, shipping quickly and rigorously to millions of global users
rgbrgb··on Charts built for Chat
very cool! i'd been thinking about this idea and found vega-lite to be an interesting take as well [0].

i'll compare and look at folding this into setoku for app generation [1]. right now apps are just html blobs your claude authors + a mechanism for populating them with live data. definitely hard to audit but very flexible for operators to claude together internal apps. anyway, the charts look decent but really depend on the model that's making them and don't really follow any sort of style guide (example: https://demo.setoku.com/apps/a7a1240ae0bc202c5eefa1cc). Your lib could bring some consistency and make global styling possible.

[0]: https://vega.github.io/vega-lite/

[1]: https://setoku.com

rgbrgb··on Pion, an agent designed to run any company autonomously
interesting. the less "research lab" version i've seen of this is https://polsia.com

comparatively, I really appreciate the transparency here. clearly it's a little too early for this (quickly glanced at the P&L's, correct me if I"m wrong), but someone has to run the experiment and figure out when it's ready for prime time.

rgbrgb··on New $100k H-1B visa fee pushes tech jobs offshore
> semi-skilled workers

fwiw the h1-b workers I encountered in bigtech were totally on-par with their US citizen equivalents in both coding and english communication. many teams were about 50/50 in my office (SF, non-HQ).

my current talent/placement company works mostly with AI startups who are usually too early to support visa requirements [0]. being able to support the lead-time and planning for international applicants is a huge advantage later stage companies have in terms of being able to scoop up talent at reasonable prices. big loss for the local ecosystems if these jobs move across the border imo.

[0]: https://www.hedgy.works

rgbrgb··on Shopify acquires Tailwind
why shadcn and not bootstrap? shadcn is like a cool weird approach to a ui kit but bootstrap got us a date picker iirc.
rgbrgb··on Navier-Stokes – Tristan Buckmaster [pdf]
kind of rhymes with the reports of LLM's watching open source PRs and instantly exploiting defects. security by obscurity is so back
rgbrgb··on Tell HN: OpenAI brings back 5 hour limit for plus and business standard users
agree and underscores the idea that you should keep your setups portable between model providers by using external memory systems and connector gateways
rgbrgb··on Ask HN: How do you manage skills files?
tbh I use 1 custom skill (workflow for completing a github issue and opening dev server/PR) and have it checked-in to my main project repo.

For me, it's like a dev script basically and gets that level of care. I don't need an eval... I'm the only user and I use it like 5 times a day.

rgbrgb··on Hackers have withdrawn ~4k BTC (~$320M) from the Liquid Federation wallet
There’s kind of an interesting thread here about open source, which is usually thought of as more secure because of more eyes on the code, actually being less secure because an accidental merge can be exploited instantly with LLM’s monitoring. Is there a lot more security value in obscurity than before?
rgbrgb··on Ask HN: Who is using MCP in production?
at Hedgy we built an MCP to give our agents read-only access to cross-system data + context about what it means [0]. daily it helps me debug customer flows and think through features and priority.

the advantage of MCP is that the tool description names what data it has so the agents know to just use it if they want that kind of data. as new data is added, everyone’s tool description updates. with a REST api or cli I suppose we could update a checked in AGENTS.md to ship it to engineers but idk how id get that to colleagues using the it from their claude.ai or co-work.

[0]: setoku.com

rgbrgb··on Nobody Has Actually Built a Software Factory
if you're using claude code, i find you can instruct it to watch the pr and iterate on ci failures. I put this in an /issue skill that completes GitHub issues in the way I like then PR's or boots dev with QA instructions if it needs a human touch/eye. to drive this, I have a higher level bash script that makes a fresh worktree off of origin/main named after the issue and spawns a claude session running /issue.

i'm not at the point where I'd go totally hands-off with code review / QA, so this setup is the right balance of automation for my current read on agent capability.

rgbrgb··on Nobody Has Actually Built a Software Factory
or maybe more like a restaurant than a kitchen... with software development (like all product development) you need to bake in the user feedback loop

like to torture the metaphors, i think we already have the factory (coding agents you can ask to manufacture software to a spec) but it's the whole process including QA, shipping, listening to users and iterating that has to happen over time (unless you have an accurate world simulation so you know exactly how your product will be received... and I know there are people working on that too but I'm skeptical)

rgbrgb··on Show HN: Skatanica – Browse and share skate clips by location
this is sick and the video infra sounds interesting! as a fellow san diegan i really get a kick out of seeing everyone who hit the 14 stair behind my high school https://skatanica.com/spots/5eyevxzo35tcou1n6doxkw2lx?map=-9...

why no hometown hero tony hawk?

rgbrgb··on Show HN: HN Match Maker – Matching "Who Wants to Be Hired?" With "Who's Hiring?"
this is cool! incidentally we do a similar motion internally for members on https://www.hedgy.works

how did you think about evaluating quality when designing your ranker / fit scoring?

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