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fosterfriends

593 karma · joined June 30, 2017

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fosterfriends··on Show HN: MCPcat – A free open-source library for MCP server monitoring
Been waiting for a while for better monitoring on MCPs. We make heavy use of hotshots - down for anything to get observability into Datadog cleanly.
fosterfriends··on Ask HN: Who is hiring? (July 2025)
Graphite | Mid-level & Senior Software Engineers| New York, NY in our Soho Headquarters | https://graphite.dev

We’re building Graphite to help high-performing engineering teams run faster, cleaner code reviews. Our product is already used by some of the world’s best developers, and we’re just getting started! We're hiring experienced engineers across the stack, are are looking for people who:

-Care deeply about code quality, system design, and scaling software responsibly

-Have a strong product sense and enjoy collaborating closely with design & product teams

-Have experience with AI-driven workflows, prompt engineering, or interest in developer tooling is a plus

-Are product-driven and quality-obsessed; we ship thoughtfully and often

We've recently raised a $52m Series B by Accel, A16z, & others, and have big goals this year.

The hiring process: quick intro call, 2 technical interviews, & an onsite interview, followed by offer!

If you are someone who wants to work on meaningful problems, values clean code and thoughtful systems, & loves building tools for other engineers, we'd love to chat with you!

You can apply directly on our careers page(https://graphite.dev/careers#positions) or email sam@graphite.dev with the subject title: "Thank you for stacking with us) with a copy of your CV.

Recruiters: appreciate your hustle, but we’re only hiring through direct applications.

fosterfriends··on A Research Preview of Codex
++ Kind of my whole thesis with Graphite. As more code gets AI-generated, the weight shifts to review, testing, and integration. Even as someone helping build AI code reviewers, we'll _need_ humans stamping forever - for many reasons, but fundamentally for accountability. A computer can never be held accountable

https://constelisvoss.com/pages/a-computer-can-never-be-held...

fosterfriends··on Show HN: Cocommit – A copilot for git commit
I'll second it - consistency is better than perfect
fosterfriends··on High Frequency Food: Better Cutting with Ultrasonics
This is so cool. Alas, probably no way to get at home
fosterfriends··on Show HN: Hyperbrowser MCP Server – Connect AI agents to the web through browsers
++ love that folks are trying to build companies on MCP. Good luck!
fosterfriends··on Show HN: My Attempt to Organize the World of AI Dev Tools
Love it - I use a mix of Claude Code and Cursor agentic mode the most locally from this list.

I'll (biasedly) throw in "Diamond" - https://diamond.graphite.dev/, and in general, AI code review tools as a whole category :)

fosterfriends··on Why AI will never replace human code review
Love this take
fosterfriends··on Why AI will never replace human code review
Fascinating - are you imagining a sort of adversarial AI situation, where one LLM bot writes the PRs, and a different one reviews them, leading to an organically improving codebase? Kind of a cool idea.
fosterfriends··on Why AI will never replace human code review
I really like the general take that LLMs scanning PRs is simply "zero config CI." We already have a great paradigm for this; we don't need to reinvent a new category. In that light, we can weigh its value more as a fuzzy linter, rather than a be-all-end-all.
fosterfriends··on Phind 2: AI search with visual answers and multi-step reasoning
I used the first version of Phind for some time and loved it. As Perplexity and ChatGPT got better, I started shifting more of my traffic back to them. Excited to see y’all still in the race and giving competators a run for their money. I appreciate your focus on developers as an audience, might give you an edge over tools serving a broader base.
fosterfriends··on Cheap blood test detects pancreatic cancer before it spreads
Has anyone tried function? I'm curious how legit it is.
fosterfriends··on How I use LLMs as a staff engineer
"Proofreading for typos and logic mistakes: I write a fair amount of English documents: ADRs, technical summaries, internal posts, and so on. I never allow the LLM to write these for me. Part of that is that I think I can write more clearly than current LLMs. Part of it is my general distaste for the ChatGPT house style. What I do occasionally do is feed a draft into the LLM and ask for feedback. LLMs are great at catching typos, and will sometimes raise an interesting point that becomes an edit to my draft."

--

I work on Graphite Reviewer (https://graphite.dev/features/reviewer). I'm also partly dyslexic. I lean massively on Grammarly (using it to write this comment) and type-safe compiled languages. When I engineered at Airbnb, I caused multiple site outages due to typos in my ruby code that I didn't see and wasn't able to execute before prod.

The ability for LLMs to proofread code is a godsend. We've tuned Graphite Reviewer to shut up about subjective stylistic comments and focus on real bugs, mistakes, and typos. Fascinatingly, it catches a minor mistake in ~1/5 PRs in prod at real companies (we've run it on a few million PRs now). Those issues it catches result in a pre-merge code change 75% of the time, about equal to what a human comment does.

AIs aren't perfect, but Im thrilled that they work as fancy code spell-checkers :)

fosterfriends··on "A computer can never be held accountable"
This is why AI should never give the final code review approval
fosterfriends··on Ask HN: Who is hiring? (February 2025)
Graphite | Senior Software Engineer | NYC (Soho) | ONSITE | Full-time | $160k–$220k + Equity | https://graphite.dev Hi everyone! Graphite (Neo-backed company) is expanding our engineering team.

We raised $20M from Andreessen Horowitz, the founder of GitHub, the founder of PagerDuty, and the creators of React. Our team is 20+ strong with prior experience at Meta, Google, Airbnb, Stripe, DoorDash, Square, and Datadog. We’ve caught strong revenue traction with thousands of customers, including Snowflake, Vercel, Datadog, Asana, Brex, Ramp, and Square. Our whole team is based in our NYC office.

We’re building the world’s best tool for developers to ship code faster and more efficiently, including features like stacked pull requests and AI-powered code review. I’m looking for kind, smart, and passionate folks who would be excited to build a tool that they and all their engineering friends get to use daily!

*What you’ll do:*

- Design and implement new features for our developer platform.

- Collaborate closely with users to understand their needs and improve workflows.

- Work with a small, talented team in a fast-paced environment.

- Contribute across the stack, from frontend to backend.

*What we’re looking for:*

- Strong software engineering experience.

- Passion for developer tools and improving developer productivity.

- Excellent communication and collaboration skills.

- Willingness to work full-time onsite in our Soho, NYC office.

https://graphite.dev/careers

fosterfriends··on Introducing deep research
Honestly, these are the smartest and overall best LLM outputs I've ever seen to date. Loving Deep Research, feels like another level up in the race
fosterfriends··on Introducing deep research
Ran it for you using o3-high! Here's a link to the results: https://chatgpt.com/share/67a0b227-8ee4-800f-a8ed-882e7bab97...

Hopefully helpful, happy to test others for you :)

-- Raw output --

Understood. I will conduct a detailed technical analysis of next-generation particle collider projects, focusing on the Future Circular Collider (FCC), International Linear Collider (ILC), Compact Linear Collider (CLIC), Muon Collider proposals, and other significant initiatives.

The report will include: - Planned energy ranges and collision types - Estimated construction and operation timelines - Technical advantages and challenges - Approximate costs - Key physics goals - Review of technical design reports and feasibility studies - International collaboration and support - Comparative analysis on feasibility, cost-benefit, scientific potential, infrastructure needs, and environmental impact - Long-term considerations, including upgrade paths and integration with existing facilities

The analysis will be formatted as a structured technical summary, suitable for presentation at a topical meeting of particle physicists, with comparative tables and figures where relevant.

I will update you when the report is ready.

# Next-Generation Particle Collider Projects: A Comparative Technical Analysis

## Introduction High-energy physics is charting plans for new colliders to extend beyond the LHC and its High-Luminosity upgrade (HL-LHC). The discovery of the 125 GeV Higgs boson has motivated proposals for a dedicated “Higgs factory” lepton collider to study its properties with precision, as well as future energy-frontier machines to search for new physics. Several next-generation collider initiatives are under consideration internationally as of 2024. These include CERN’s proposed *Future Circular Collider (FCC)*, Japan’s *International Linear Collider (ILC)*, CERN’s *Compact Linear Collider (CLIC)*, various designs for a *Muon Collider*, China’s *Circular Electron-Positron Collider (CEPC)* and its successor *Super Proton-Proton Collider (SppC)*, among others. Each proposal differs in collision type (electron-positron, proton-proton, muon-muon, etc.), energy scale, technology, timeline, cost, and physics focus. This summary reviews each project’s key parameters – *planned energy ranges, collision types, timeline, technical advantages/challenges, cost, and physics goals* – based on technical design reports and feasibility studies. A comparative analysis then contrasts their *technical feasibility, cost-benefit, scientific potential for discoveries, timeline to first data, infrastructure needs, and environmental impact*, highlighting the relative strengths and weaknesses of each approach. We also discuss long-term implications such as upgrade paths, flexibility for future modifications, and integration with existing infrastructure.

(Citations refer to official reports and peer-reviewed sources using the format 【source†lines】.)

## Future Circular Collider (FCC) – CERN - *Type and Energy:* The FCC is a *proposed 100 km circular collider* at CERN that would be realized in stages. The first stage, *FCC-ee*, is an electron-positron ($e^+e^-$) collider with center-of-mass energy tunable from ~90 GeV up to 350–365 GeV, covering the Z boson pole, WW threshold, Higgs production (240 GeV), and top-quark pair threshold (~350 GeV). A second stage, *FCC-hh*, would use the same tunnel for a proton-proton collider at up to *100 TeV* center-of-mass energy (an order of magnitude above the LHC’s 14 TeV). Heavy-ion collisions (e.g. Pb–Pb) are also envisioned. An *FCC-eh* option (electron-hadron collisions) is considered by adding a high-energy electron injector to collide with the proton beam. This integrated FCC program thus spans both *precision lepton* collisions and *energy-frontier hadron* collisions.

- *Timeline:* The conceptual schedule foresees *FCC-ee construction in the 2030s* and a start of operations by around *2040* (as the LHC/HL-LHC program winds down). According to the FCC Conceptual Design Report, an $e^+e^-$ Higgs factory could begin delivering physics in ~2040, running for 15–20 years. The *hadron collider FCC-hh* would be constructed subsequently (using the same tunnel and upgraded infrastructure), aiming for *first proton-proton collisions in the late 2050s】. This staged approach (lepton collider first, hadron later) mirrors the successful *LEP–LHC sequence*, leveraging the $e^+e^-$ machine to produce great precision data (and to build infrastructure) before pushing to the highest energies with the hadron machine. ...

(Too long for HN to write more)

fosterfriends··on Introducing deep research
I have pro, in US, not seeing yet
fosterfriends··on Show HN: We're building a desktop app for browser-based AI agents
Feels like you're being pretty negative to some kind folks showing off a cool thing they built.

HN is a place for people to show and tell with positive intention and constructive feedback. I don't think OP is scoffing at all :)

fosterfriends··on How to Be a 10x Engineer: Execute in an Extreme Straight-Line
Agreed!

> "Do You Even Want to Be 10x? You don’t have to. You’re not a lesser engineer if you operate at a steady clip, write clean code, and value stable processes. Seriously. Some workplaces thrive on consistent, methodical improvement—and a 10x renegade might actually hurt them."

fosterfriends··on Ask HN: How to learn marketing and sales as a solo entrepreneur?
I strong second the Mom Test book. Was invaluable for me at Graphite ramping up to sales/marketing/validation
fosterfriends··on Ask HN: Who is hiring? (January 2025)
Graphite | Senior Software Engineer | NYC (Soho) | ONSITE | Full-time | $160k–$220k + Equity | https://graphite.dev Hi everyone! Graphite (Neo-backed company) is expanding our engineering team.

We raised $20M from Andreessen Horowitz, the founder of GitHub, the founder of PagerDuty, and the creators of React. Our team is 20+ strong with prior experience at Meta, Google, Airbnb, Stripe, DoorDash, Square, and Datadog. We’ve caught strong revenue traction with thousands of customers, including Snowflake, Vercel, Datadog, Asana, Brex, Ramp, and Square. Our whole team is based in our NYC office.

We’re building the world’s best tool for developers to ship code faster and more efficiently, including features like stacked pull requests and AI-powered code review. I’m looking for kind, smart, and passionate folks who would be excited to build a tool that they and all their engineering friends get to use daily!

What you’ll do:

- Design and implement new features for our developer platform.

- Collaborate closely with users to understand their needs and improve workflows.

- Work with a small, talented team in a fast-paced environment.

- Contribute across the stack, from frontend to backend.

What we’re looking for:

- Strong software engineering experience.

- Passion for developer tools and improving developer productivity.

- Excellent communication and collaboration skills.

- Willingness to work full-time onsite in our Soho, NYC office.

If you’re interested, please apply through our careers page here: https://graphite.dev/careers

fosterfriends··on Things we learned about LLMs in 2024
My fav part of the writeup at the end:

"""

LLMs need better criticism # A lot of people absolutely hate this stuff. In some of the spaces I hang out (Mastodon, Bluesky, Lobste.rs, even Hacker News on occasion) even suggesting that “LLMs are useful” can be enough to kick off a huge fight.

I like people who are skeptical of this stuff. The hype has been deafening for more than two years now, and there are enormous quantities of snake oil and misinformation out there. A lot of very bad decisions are being made based on that hype. Being critical is a virtue.

If we want people with decision-making authority to make good decisions about how to apply these tools we first need to acknowledge that there ARE good applications, and then help explain how to put those into practice while avoiding the many unintiutive traps.

"""

LLMs are here to stay, and there is a need for more thoughtful critique rather than just "LLMs are all slop, I'll never use it" comments.

fosterfriends··on Coconut by Meta AI – Better LLM Reasoning with Chain of Continuous Thought?
Once again, we see Meta being more open than OpenAI. I’m loving that their business incentive is aligned with open sourcing and commodifying state-of-the-art LLM technology. Keep em coming
fosterfriends··on Build a working game of Tetris in Conway's Game of Life (2014)
I love how projects like this can give folks a chance to understand and derive computer mechanics from scratch, in a visual way. I feel like living in the land of bits and high level constructs for too long really creates black boxes and fear that it’s too complicated to ever understand the metal. Projects like that dismistify things in clean 2d space. Props, and great write up!
fosterfriends··on Should SaaS startups offer on-prem?
Thanks, I appreciate it! As an engineer, I have no design skills, but love using https://excalidraw.com/ to make quick diagrams - would recommend.
fosterfriends··on The Next Great Leap in AI Is Behind Schedule and Crazy Expensive
Link to non-paywall?
fosterfriends··on Canvas
Cool to see more attention getting paid to AI code review and not just code-gen:

> Review code: ChatGPT provides inline suggestions to improve your code.

fosterfriends··on Canvas
Looks like you can only use it with 4o at the moment, and not yet with o1 models. I might stick to o1 for editing jobs for the time being.
fosterfriends··on Git is bad. Here's how I'd make it better
Agreed with the sadness. My pragmatic take is that any improvement here needs to be incrementally adoptable and therefore compatible with the existing data structures - otherwise it'll be too hard to migrate.
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