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Larsen Cundric
Browser Use
6,497 posts
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Larsen Cundric
Browser Use
@larsencc
agent infra @browser_use · what breaks when scaling agents to millions in prod
San Francisco, CA
cundric.com
Joined March 2025
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  • Pinned
    user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    Feb 27
    Article cover image
    Article
    How We Built Secure, Scalable Agent Sandbox Infrastructure
    From AWS Lambda to Unikraft micro-VMs with a control plane architecture. How we got here We run millions of web agents at Browser Use. We started with browser-only agents on AWS Lambda, where each...
    1.1M
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    Jul 15, 2025
    Probably 95% of Frontend work can just be vibecoded at this point. I wouldn’t recommend spending too much time learning it. Instead focus on Backend and Infra.
    484K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 26, 2025
    Your agents can now log in. Without you lifting a finger. Just shipped Secrets in @browser_use Cloud UI 🚀 Save passwords and other private data securely. Agents will use them to access gated pages — like dashboards, CRMs, or admin panels. No more manual logins.
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    32K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 1, 2025
    Hi there! I’m a founding engineer at @browser_use — building the backend, frontend, and infra for real-world web agents that can browse and complete tasks like a human. I’m learning a ton, making mistakes, shipping fast, and asking questions along the way. Follow if you're
    31K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 12, 2025
    Any cool vibecoders that want to join me as founding engineer at @browser_use 👀
    28K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 3, 2025
    Google Sign In now available on @browser_use Cloud! That means you can now FINALLY use Google Docs, Sheets, and all the other Google Services. Try the following prompt: "Get me the top social media companies by market cap. Include the name, market cap in billions and founding
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    40K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    Oct 21, 2025
    LFG, made it to SF 🫶 Apparently I’m an alien of extraordinary ability now. Let’s meet.
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    13K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 26, 2025
    You asked. We built it. 🚀 No more staying up late to trigger tasks. No more duct-taping your own cron jobs. Just tell us what to do and when to do it. We'll take care of the rest. - Fully automated - Runs in the cloud - Works with your existing tasks Set it and forget it.
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    30K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 18, 2025
    How I made our @browser_use Cloud 2.5x faster and 80% cheaper. Infra used to be a mess: - Vercel functions for agents - Railway for backend and DB - Everything hosted in different US regions - No clear visibility into costs or performance It worked… but it was slow and
    13K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    Jul 16, 2025
    Replying to @noufelgo
    I call that market validated
    5.1K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 16, 2025
    Manual work is dead. Our Cloud agent can now: - download a file - upload the file somewhere else - make it available for you to download after its done Fast and cheap, powered by LLaMA on @GroqInc. Zero manual steps. Just results. Built with @browser_use
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    22K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    Jul 18, 2025
    Is @Cloudflare going to be the next trillion $$$ company? 👀
    9.5K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    Nov 4, 2025
    Browser Use LLM is now 5x cheaper! It's now the cheapest (and fastest) model we offer for getting your tasks done. One step costs only $0.002 🤯 Enjoy.
    9.2K
  • user avatar
    Larsen Cundric
    Browser Use
    @larsencc
    May 5, 2025
    First day at @browser_use I didn’t get anything done, and thats ok. The second day I shipped my first little feature and fixed an annoying bug. By the end of the week I migrated the agents from Vercel functions to AWS Lambdas. It was a crazy trial, but now we are here. All I
    5.1K

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