we build crazy fast, open source infra for agents to act on the internet. trusted by @cashapp, @framer, @vercel, and 11,000+ teams.
san francisco
Based in United States
- Tweets 456
- Following 20
- Followers 3,706
- Likes 1,638
join us on sunday, oct 4 in sf to build personal agents. hack with @neondatabase, @mastra, and friends. there will be prizes, credits, merch, food trucks, and a happy hour.
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auth isn't a one time job. it's keeping a browser profile alive through MFA, approvals, and reauth every time after the first. that's a @temporalio workflow.
our founding engineer, @masonwilliams, on vibe check
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your users aren't all in the united states. now your agents don't have to be either.
KERNEL browsers now run in eu-west and ap-southeast. pass in a region param and get 3x faster first byte on regional sites.
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KERNEL x @agentcardhq allows users to authorize agent payments with their actual cards, preserving their transaction histories and card rewards.
“agentcard allows customers to buy using their cards instead of one-time cards. we believe that buying things with agents should be easy and fast and we are very excited to partner with the KERNEL team to make that possible.”
- @keyserfaty, co-founder & ceo at agentcard
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KERNEL x @link by @stripe lets browser agents pay with cards already saved in link.
link issues single use cards with set transaction boundaries, including merchant, amount, and purpose. KERNEL enables browser agents to complete checkouts without exposing the underlying card details.
"many online tasks ultimately end in a payment. KERNEL gives agents a secure environment to complete those transactions. by integrating link’s wallet for agents, KERNEL is making it simple for agent builders to turn on payments in one go."
- @stevekaliski, principal software engineer at stripe
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your browser agents can now complete online purchases without ever touching card data.
agents on KERNEL now pay on checkout pages using aliases, not card data. we swap in the real credential at egress, so card numbers never touch your agent's runtime or context.
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.@getskydive saved 3 months of engineering work building an agent browser experience with KERNEL’s 24 fps streaming and persistent profiles.
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KERNEL now plugs into foreman, @vercel's open source software factory built on eve.
𝚗𝚙𝚡 𝚎𝚟𝚎 𝚊𝚍𝚍 𝚎𝚡𝚝𝚎𝚗𝚜𝚒𝚘𝚗/𝚔𝚎𝚛𝚗𝚎𝚕 gives agents a real cloud browser, so they can browse the web and report back.
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today, we're launching our bug bounty program.
we build security into every layer of kernel. but don't just take our word for it. submit a vulnerability disclosure if you find something, and we'll pay you for it.
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KERNEL gpu browser running shaders built with vgpu.sh.
recorded with 𝚔𝚎𝚛𝚗𝚎𝚕.𝚋𝚛𝚘𝚠𝚜𝚎𝚛𝚜.𝚛𝚎𝚙𝚕𝚊𝚢𝚜().
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the web wasn't designed for agents. we spoke with allie howe on insecure agents about about why identity, not model capability, is what's keeping browser agents out of the enterprise.
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last week we crossed 50,000,000 browsers launched on KERNEL.
join 7,000 devs shipping with us.
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we're bringing the most-used KERNEL features to our free plan.
browser profiles, managed auth, file i/o, browser extensions, and replays are now available without a subscription.
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KERNEL browsers now support custom proxies with CA bundles.
pass your CA bundle in when you create the proxy and it will be installed in the browser's trust store automatically.
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claude now connects to KERNEL.
you can add it from the connector directory and give claude isolated browsers in the cloud with sub-50ms cold starts
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introducing browser telemetry: a stack trace for your browser agent.
a real-time, structured timeline of browser events: network responses, console logs, captcha events, and more. reduces the number of agent tool calls and token usage by up to 67%.
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Squoosh AI moved from self-hosted browsers and a legacy provider to KERNEL to run 1000s of AI-powered customer simulations in parallel, turning a/b tests that once took 30–90 days into predictive conversion insights in < 1 hour.
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now live: replays on kernel can record audio.
previously, your browser session replays were silent movies. now on kernel, replays have sound. so when your agent joins a call, plays a video, or talks to a voice ui, you can hear whether it worked.
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.@effectiveailabs uses KERNEL to ingest 10m+ regulatory filings. by upgrading their self-hosted browser infra setup to KERNEL's stealth browsers and managed auth, effective turned weeks of compliance research into minutes.
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agents are changing infra requirements. our co-founder and ceo, @juecd__ spoke at the replay conference by @temporalio to share lessons learned from giving agents access to the internet at human speed
piped.video/watch?v=ZqA3R18F…
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.@stably_ai uses kernel to build an ai-powered end-to-end testing platform.
by switching to kernel, they saw 333x faster cold starts and eliminated infra-caused test flakiness.
"we evaluated many options, and kernel is the only one that could deliver the performance all of our customers' test suites required." - jinjing liang, co-founder & ceo, stably
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.@stardrift_ai uses KERNEL to build an ai travel planner that handles everything from planning and booking your trips to identifying which flights have starlink.
“KERNEL is clearly the superior product. it just has all the hard things set up really easily.” - leila clark, ceo & founder, stardrift
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today we’re rolling out managed auth 2.0 — now 8x more reliable in our internal benchmarks.
it's your standard interface for managing auth for all your agents across any site.
2fa/sso/1password and re-auth automagically handled.
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today, we're partnering with cloudflare to broaden our support for web bot auth on KERNEL.
your agents can now cryptographically prove who they are to services like cloudflare and others.
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gpu acceleration on vs off.
a webgl aquarium with 30,000 fish stress‑testing our cloud browsers.
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.@tryflint uses KERNEL to build an autonomous website platform.
by switching to KERNEL, they saw 5x fewer errors and 167x faster cold starts.
“when it comes to infra, i’ll take reliability over great developer experience. KERNEL has both.” - sam sheridan, founding engineer, flint
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changelog / 015
• improved browser pool latency
• custom chrome policy.json
• fixes and improvements
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nava labs uses KERNEL to build ai agents that make government services feel more human.
by switching to KERNEL, they also saw 3x faster build times and reduced infrastructure costs by 55%.
“KERNEL freed us from browser infrastructure so we could focus on building a more human intake experience for caseworkers and families.” - foad green, senior software engineer, nava labs
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KERNEL ceo catherine jue on the enginears podcast, sharing how we're rethinking observability for agents:
"we're moving to a world where the agent makes decisions on its own."
"it could take me hours or days to look through network logs to pinpoint an issue. give that to an agent, and it could find the issue in real time."
"instead of restricting, we can expose more and more observability to the agent so it can make better decisions faster."
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introducing gpu acceleration, now in limited research preview.
you can now play doom 3, compiled to wasm, on our cloud browsers at up to 60 fps.
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we’ve partnered with @1Password to take the next step toward solving authentication for agents.
last month, we introduced managed auth: a standardized way for agents to log in and stay logged in across the internet.
with this partnership, your agents can now use credentials directly from your 1password vaults with managed auth.
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.@juecd__ on the M.A.U. podcast by convex on how our team’s agent uses managed auth to order our office groceries every week.
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changelog / 013
this week, os-level controls for moving and dragging the mouse now use bézier curves by default, plus:
• webdriver bidi support
• proxy hot swapping
• 500x faster headless viewport resizing
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we worked with @fireworksai_hq to make training VLM browser agents with open source tools as easy as possible.
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in february, we began exploring open web standards like webdriver bidi.
today, we’re partnering with jason huggins—creator of selenium, appium, and now vibium—to bring webdriver bidi support to KERNEL.
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somewhere at a semi-undisclosed location, we’re co-hosting a dinner with cloudflare and NVIDIA for the GTC conference next week.
who’s going and wants an invite?
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benny spins up 880,000+ browsers/mo. using KERNEL to help the 1 in 8 (42 million) americans on snap.
by switching to KERNEL, they saw 4.3x fewer errors and saved $72K+ per year.
“you can tell KERNEL was built with a lot of craft and care. everything from the docs to the infrastructure is current and reliable.” - steve austin, co-founder & cto, benny
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we worked with @yutori_ai to build a template running their sota n1 computer use model.
it’s a 1-line deploy.
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last week, KERNEL ceo catherine jue talked about how we reduced browser cold starts from 30 seconds to 20 ms on the infra pod:
“no one had ever tried to put a browser on a [unikraft] unikernel before … we figured out how to make it work ... the response was super positive and it kind of put us on the map”
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changelog / 011
• improved profile upload performance
• added 21 new tools to KERNEL mcp server
• fixes and improvements
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Silkline uses Kernel to modernize manufacturing procurement, reducing checkout effort for COTS orders by 80% and cutting supplier integration time from 6 weeks to only 10 minutes.
“I tried Kernel, and I was like, holy ****, this is actually great. It was everything we needed to build the modern procurement experience I envisioned for our customers.” - Brent Shulman, Founder & CTO, Silkline
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Changelog / 009
• Login with Managed Auth
• Web Bot Auth support
• Batch API for Computer Use
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Introducing Managed Auth: a standardized way for agents to log in and stay logged in across the internet.
This is a big step toward finally solving auth for agents.
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Vercel and others are building Web Bot Auth-aware directories so they can look up your agent’s public key and verify signatures on each request.
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Web Bot Auth began as an IETF proposal with the idea of enabling agents to sign every HTTP request using HTTP Message Signatures, with keys discoverable through a public directory. It’s quickly becoming the standard way for agents to establish identity.
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We’ve partnered with Vercel to support the adoption of Web Bot Auth.
You can now cryptographically sign browser requests, so agents can prove who they are to services like Vercel and others.
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.@promptingco spins up 50,000+ browsers/mo. using Kernel to get your product cited on ChatGPT.
“We evaluated other options, but really Kernel was a no-brainer. We wanted to make sure we didn’t cut any corners.” - Albert Purnama, Co-founder & CTO, The Prompting Company
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