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Roscoe Rubin-Rottenberg

@knotbin.com
3.4K followers 1.5K following 4.6K posts

engineer, 16, brooklyn consumer of the firehose co-founder @sprk.so

PostsRepliesMedia
Roscoe Rubin-Rottenberg @knotbin.com · 27/09/2026
Random UI shit that bothers no one except me: For some reason only ~half of the new Apple Music posters have UI color matched to the artist logo. Maybe this is for legibility but they do it with dark colors sometimes…
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Roscoe Rubin-Rottenberg @knotbin.com · 21/09/2026
My friend told me to meet him at Fulton St station
"I'M OUT!
1.3 SECONDS
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Roscoe Rubin-Rottenberg @knotbin.com · 19/09/2026
Sometimes I’m lying in bed and I think of something and ask Siri to remind me of it. Usually I know what they refer to or have some vague idea of what I meant when I look at them later. But what the fuck could this possibly mean
Reminders
Hiccups waterboarding rough draft
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Roscoe Rubin-Rottenberg @knotbin.com · 31/08/2026
everything app doesn't even mean anything anymore everyone just uses it when they're adding like two more features to their app.
TC TechCrunch
APPS Grindr wants to be the everything app for gay men; investors are still deciding whether it can pull it off
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Roscoe Rubin-Rottenberg @knotbin.com · 26/08/2026
whenever I want to do any work
"WELL WOULD YOU LOOK AT THE TIME" meme image except instead of the clocks saying "NOTHING" they have screenshots reading "Disruption with some Github services",  "Incident with Actions", and "Incident with Pull Requests" along with a few more partially obscured screenshots
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Roscoe Rubin-Rottenberg @knotbin.com · 26/08/2026
Answers (hidden for spoilers, not actually graphic)
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Roscoe Rubin-Rottenberg @knotbin.com · 26/08/2026
Here's the crossword I made for @atproto.nyc!
Content Addressing
Roscoe Rubin-Rottenberg

Across
1 Night flyer
4 Rumored Anthropic and OpenAl filing
7 Mongoose, e.g.
10 Before carte or mode 11 Tax-deferred retirement option, for short
12 "Link in ___"
13 __ Dew, abbr.
14 Dialect coach's list including 'bath' and 'dance'
16 Burden, with "down"
17 Entirety
18 Something to scratch 
19 Feared fallout from the Iran war
22 "I Love LA" and "Marty Supreme" star A'zion
23 Hoops org. 
25 Green owl mascot of popular mobile app
26 Cigar, informally
30 To atprotate
32 Thoroughly review
35 Obamacare, abbr.
36 To be, in Barcelona 
37 Comedic playwright of the Roman Republic 
39 Request for questions on a forum, abbr. 
40 Detail requested of someone running late
41 Very rarely: web 
42 Josh _ who appeared in the live-action Beauty and the Beast 
43 Oft-mocked blockchain
collectibles
44 Did very well, in Gen Z slang
45 The loneliest number,
17 Alleged cause of recent
according to a 1968 hit song
Spokane wildfires
Down
20 Corner-office crowd
21 Within
1 A snack, to a panda
24 Far, far in the past
2 Solution to bad breath in a
26 To break away
small metal tin
27 One of three poorly received
3 A place for repositories
2026 albums
4 Home of Roma and Milano
28 Robinhood competitor
5 A place for repositories
29 Municipality in the
6 Climbable tree
Netherlands
7 Posthumous write-up, for
31 Unspoken
short
33 Volunteer-led org. found in
8 Not insertable into a PS6
quiet friday
9 Insects prominent in a unique
•34 Brotherly order, briefly
Bluesky client
38 Contract signed by movie
15 Hilly European capital
crews, e.g.
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Roscoe Rubin-Rottenberg @knotbin.com · 23/08/2026
Watching everyone @atproto.nyc go to the bar w out me
Cynthia Erivo staring bullets as Ariana Grande hugs someone on Wicked For Good red carpet
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Roscoe Rubin-Rottenberg @knotbin.com · 21/08/2026
Been compiling a playlist of every single girl What am I missing? (girl must be singular, must contain a descriptor of the girl) Honorable mention to WOR$T GIRL IN AMERICA bc I can’t include album titles
Every single girl

Sad Girl
Lana Del Rey


Normal Girl E
SZA


Girl On Fire
Alicia Keys

Material Girl
Madonna


Brown Eyed Girl (Original Stereo Mix)
Van Morrison


Uptown Girl
Billy Joel


Pretty Girl
Clairo

Rich Girl
Daryl Hall & John Oates

Girl Like Me
PinkPantheress

Rebel Girl
Bikini Kill

Girl, so contusing
Charli xcx

Amarican Giri
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Roscoe Rubin-Rottenberg @knotbin.com · 21/08/2026
yeah I'm being facetious ofc I'm gonna go. I mean how could I not with a website like this?
Red Hook Pinball Museum
Where the "WOWs" are always lit!
Play NYC's Only Vintage Pinball 1870s-1970s
Now open every Thursday 1 PM - 8 PM!
Located at 362 Van Brunt St! Open EVERY Friday, Saturday, & Sunday 1PM - 10 PM
All ages welcome, bring the whole family!
Now offering private parties & rentals!
Repairs and restoration available as well! Inquire with email address below!
Contact: redhookpinballmuseum@gmail.com/ (+1) 650-224-0133
Check our Instagram for updates @RedHookPinballMuseum
Sign up for our email list here!
Upcoming Events & info!
Every Friday -- Tarot with Taika starting at 4:30
Every Sunday - Nicolas House of Games trivia @ 7:30PM (Play pinball too!)
Friday 8/21 IFPA Tournament starting at 7:00!
Monday 9/07 Labor Day Tournament, time TBD!
Current Machines
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Roscoe Rubin-Rottenberg @knotbin.com · 20/08/2026
"your outie constantly misleads people regarding what day of the week it is"
Ms. Casey from Severance
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Roscoe Rubin-Rottenberg @knotbin.com · 19/08/2026
genuinely who approved that name
Key Management / Quickstart
Vercel KMS
Co Copy page Sign a JWT from a Vercel Function with a Vercel-managed key, then verify it against the issuer's
published JWKS. This takes four steps and no private key material in your deployment.
Prerequisites
• A Vercel project deployed as, or containing, a Vercel Function.
• The @vercel/kms package installed in your project.
Sign and verify your first token
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Roscoe Rubin-Rottenberg @knotbin.com · 13/08/2026
testing the new faster video uploads
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Roscoe Rubin-Rottenberg @knotbin.com · 07/08/2026
I think Twitter and Bluesky are competing for who can have the most useless search and it’s a very tight race
total eclipse of the heart
Latest
People
Videos
Photos
Pop Base
@PopBase￾9/10/25
Charlie Kirk has died at the age of 31 after being shot, Donald Trump announces.
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Ill 103MExplore
16 Filters
primetime
Top
Latest
People
Detroit Lions @detroitlions....
Primetime performance
#OnePride
Feeds
• Dec 5, 2024
TAKES MORE
17
PLAYER OF THE GAME
WEEK 14 VS GB
WR
TIM PATRICK
6 CATCHES
43 REC YARDS
2 TOUCHDOWNS
meijer
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• 104
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•••
Ron Filipkowski • @ronfilip... • Jun 5, 2025
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Roscoe Rubin-Rottenberg @knotbin.com · 06/08/2026
@fly.io the first sentance of this newsletter made me so worried I thought this was a "we're winding down" letter for a sec
Flyio
Hi folks, It's hard to know where to even start with this one. We have big news from pretty much every corner of Fly City. We don't have time for a witty prelude, so let's
dive right in.
Computers for Agents Everything you'll read below is happening because we have decided to laser
focus on a vision we've been trying to define and materialise for a while now.
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Roscoe Rubin-Rottenberg @knotbin.com · 05/08/2026
that's wild. small world. I was just looking through my camera roll the other day and found this photo I took of him last year when we won states
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Roscoe Rubin-Rottenberg @knotbin.com · 05/08/2026
oh I found it
Twitter screenshot
brick @brickm4ster
Gracie Abrams is so interesting to me bc she truly has nothing to lose
and yet she is so scared of pushing the envelope
1:17 PM • Jul 20, 2026 • 175 Views
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Roscoe Rubin-Rottenberg @knotbin.com · 02/08/2026
how did no one notice this typo in the new tanstack website
The open source 
the application stack
for the web
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Roscoe Rubin-Rottenberg @knotbin.com · 25/07/2026
nvidia, microsoft, openai, mozilla, meta and a ton of others signed a letter about how open weight models are good for a healthy & competitive ai ecosystem and they should not be banned by the us government. anthropic employees are reacting in totally normal and not at all weird ways.
Julian Schrittwieser @Mononofu • 13h
S... I'm so excited that @JensenHuang is a believer in open source now, looking
forward to the CUDA and GPU driver open source release!
Jensen Huang
@JensenHuang • Jul 24 For my first post, I'm sharing a letter @NVIDIA signed on why open
models matter. Al will transform every industry, power every company, and be built by
every country....

Julian Schrittwieser @Mononofu • 13h And @satyanadella coming out for open source too, can't wait for the open
sourcing of Windows and MS Office!
Satya Nadella
@satyanadella • Jul 24 Open-weight models are essential to a healthy Al ecosystem. Together with others across our industry, we are outlining a path for open-weight models to strengthen American competitiveness and expand economic opportunity, while protecting national security. microsoft.com/en-
us/corporat...
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Roscoe Rubin-Rottenberg @knotbin.com · 25/07/2026
Elon Musk @elonmusk
Looking into it
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Roscoe Rubin-Rottenberg @knotbin.com · 21/07/2026
“Dumbonians” be so fr 🫩
Trash can with a poster on it:
DUMBONIANS EXIST!
Be kind to our neighbors while you get your perfect shot.
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Roscoe Rubin-Rottenberg @knotbin.com · 21/07/2026
am I crazy or does this look like she's officiating their wedding
Apple v. OpenAl: All the Juicy Details of Their Legal
Battle
CNET
and PCMag
37K views • 3 days ago
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Roscoe Rubin-Rottenberg @knotbin.com · 19/07/2026
hacker news is not for the weak
> - except you cant actually log in with this username directly
Really? That's strange... I haven't made a native account... what do you need to login with then?
reply
• pbjerkeseth 23 hours ago | root | parent | next [-] a "username.tngl. sh" schema, which is that I meant by the unfamiliar protocol in the next bullet
reply
A gpm 23 hours ago | root | parent | prev | next [-]
Oh, that is unfortunate. Bluesky implicitly adds the .bsky.social domain name. Hopefully tangled starts doing the same some day.
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Roscoe Rubin-Rottenberg @knotbin.com · 19/07/2026
cooking on sound selection ui and video editor timeline layers
ui with cancel and done at the top and a video playing in the middle and a pink half-filled background with a waveform of a sound playing. the user can scroll the waveform and what's inside the pink border will play
Vertical mobile video-editing screen showing a large preview at the top, back and next buttons, playback controls, and a multi-layer timeline with video, audio, emoji, and text tracks. The selected audio clip has editing options below for adjusting, replacing, muting, or removing it.
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Roscoe Rubin-Rottenberg @knotbin.com · 17/07/2026
am I doing this right
Create new issue
Bug Report - Fabric/New Archit
Add a title *
vibed?????????? 🧌
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Roscoe Rubin-Rottenberg @knotbin.com · 10/07/2026
the two genders
Work
For getting work done

Codex
For developers
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Roscoe Rubin-Rottenberg @knotbin.com · 07/07/2026
2 for 2
2026 SCORES
AP Computer Science Principles
YOUR SCORE
5
Most U.S. colleges accept your score for credit and placement.
Find College Credit
About your score
AP World History: Modern
YOUR SCORE
5
Most U.S. colleges accept your score for credit and placement.
Find College Credit
About your score
2290
Roscoe Rubin-Rottenberg @knotbin.com · 01/07/2026
Fable 5 today
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Roscoe Rubin-Rottenberg @knotbin.com · 01/07/2026
Wait nvm it’s not even actually back. Can’t even be used for coding
Anthropic @AnthropicAI
X.com
Claude Fable 5 will be available again globally tomorrow.
After a series of productive conversations with the US government, we're redeploying the model with a new set of classifiers to target and block more cybersecurity tasks. In the near term, some routine tasks like coding and debugging will fall back to Opus 4.8.
We'll continue to refine these classifiers over the coming weeks to reduce false positives and better distinguish genuine misuse from legitimate requests.
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Roscoe Rubin-Rottenberg @knotbin.com · 30/06/2026
oh we actually finna die.mp4 in downloads folder
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Roscoe Rubin-Rottenberg @knotbin.com · 30/06/2026
oh we're never getting fable back are we
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Roscoe Rubin-Rottenberg @knotbin.com · 30/06/2026
codex is super underrated tbh I've gone between it and opencode since claude got much worse. desktop app is really nice and they give out rate limit resets like candy whenever there's any issues or outages. I have 3 banked rn
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Roscoe Rubin-Rottenberg @knotbin.com · 27/06/2026
deno desktop is INSANELY thorough. I assumed it would be super basic but it's actually a real electron killer. Notifications, DMGs, support for bundled CEF (Electron style) and native WebView (Tauri style), Auto-updater, multi-window support, and on and on. @deno.land cooked so hard with this one.
• Configuration: the desktop block in deno-json.
• Backends: CEF, webview, raw; how to choose.
• HTTP serving: Deno. serve () integration and the serving model.
• Frameworks: Next.js, Astro, Fresh, Remix, Nuxt, SvelteKit, and others.
• Windows: Deno. BrowserWindow lifecycle, multiple windows, events.
• Bindings: calling Deno code from the webview via bindings.<name>() .
• Menus: application and context menus.
• Tray and dock: system status icons and the macOS dock.
• Dialogs: prompt() , alert() , confirm() as native popups.
• Notifications: native OS notifications via the Web Notification API.
• Hot module replacement:
-hmr for framework and non-framework
apps.
• DevTools: unified DevTools attached to both the Deno runtime and the webview.
• Auto-update: Deno. autoUpdate(), manifests, bsdiff, rollback.
• Error reporting: capturing uncaught exceptions and panics.
• Distribution: cross-compilation, output formats, installers.
• Comparison: how deno desktop relates to Electron, Tauri, Electrobun, Dioxus.
• deno desktop CLI reference: the command, its flags, and the deno-Json J
desktop schema.
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Roscoe Rubin-Rottenberg @knotbin.com · 26/06/2026
yeah so um
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Roscoe Rubin-Rottenberg @knotbin.com · 26/06/2026
Bluesky!
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Roscoe Rubin-Rottenberg @knotbin.com · 26/06/2026
oh my god
Dev Agrawal
@devagrawal09 •2h
The prodigal son returns
... dan
@danabra.mov
... i have joined the @nextjs.org team at @vercel.com. for a start, i'll be working part-time, so please don't flood me with bug reports yet. however, i'll try to keep an eye on them as i want to understand what problems Next.js users are running into every day. i
want App Router to get good!
3:23 PM • Jun 25, 2026
4 reposts
2 quotes
30 likes
• 13
27 12
204
ill 11K Jon raRaRa @jon_raRaRa • 49m
is he on X? He needs to be on X.
1
1
ill 386
Dev Agrawal
@devagrawal09. 43m
now that he isn't working for bsky, maybe it happens...
1
4
ıll 339 Jon raRaRa
@jon_raRaRa
贝 Yeah exactly... or create something related to his idea of social file system - overreacted.io/a-social-files... (which I really like and could be distributed on S3 buckets!)
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Roscoe Rubin-Rottenberg @knotbin.com · 25/06/2026
wait they also improved a ton more benchmarks in 2.9 cold start being 2x faster is especially important for serverless or edge use cases.
DENO 2.8 (GRAY) VS 2.9 (BLUE) Cold start lower is better v2.8 34.2 ms v2.9 17.3 ms 1.98x faster Deno.serve 1 MiB body higher is better V2.8 1,617 req/s v2.9 1,907 req/s 1.18x faster Deno. serve throughput and peak RSS at concurrency 100; cold start is mean of 150 hyperfine runs. Dedicated x86_64 Linux box, server and load generator pinned to disjoint cores, oha median of 3 runs.

Deno. serve realworld higher is better v2.8 56.8k req/s v2.9 72.4k req/s 1.27x faster RSS, realworld lower is better v2.8 142 MB 2.2x less memory v2.9 64 MB

Deno. serve plaintext higher is better v2.8 77.0k req/s v2.9 85.6k req/s 1.11x faster RSS, 1 MiB body lower is better V2.8 197 MB v2.9 63 MB 3.1x less memory
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Roscoe Rubin-Rottenberg @knotbin.com · 25/06/2026
Also: Deno 2.8.3 leapfrogged Bun in a ton of perf benchmarks and Deno has been ahead of Bun in node compat for ages.
Deno 2.8.3: HTTP benchmarks
Deno.serve( / Bun.serve( / node:http • oha, 100 concurrent connections, best of 2 runs
Hello world
GET / → "Hello, World!"
Throughput, req/sec • higher is better
p99 latency • lower is better
Deno 2.8.3 (new)
110.9k
Deno 2.8.3 (new)
Bun 1.3.14
111.5k
Bun 1.3.14
Deno 2.8.0
97.6k
Deno 2.8.0
Node v26.3.0
70.3k
Node v26.3.0
1.04 ms
1.76 ms
1.15 ms
1.70 ms
Realworld: JSON API with auth
POST /api → validate Bearer token, parse JSON body, return JSON
Throughput, req/sec • higher is better
Deno 2.8.3 (new)
Bun 1.3.14
Deno 2.8.0
Node v26.3.0
p99 latency • lower is better
88.4k
Deno 2.8.3 (new)
82.9k
Bun 1.3.14
66.6k
Deno 2.8.0
57.0k
Node v26.3.0
1.27 ms
1.90 ms
1.74 ms
2.20 ms
Apple M1 Max, macOS 15.5 • oha 1.14.0, 5s warmup + 30s measure • prebuilt release binaries, loopback
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Roscoe Rubin-Rottenberg @knotbin.com · 24/06/2026
bc anthropic employees seemingly have to go through a 50 step vetting process before posting anything. OpenAI employees make jokes like this, talk openly about bugs and even sometimes reference future/unannounced models. It's very refreshing to feel like they're making a point to be transparent.
Andrew Ambrosino
@ajambrosino • Jun 20
today is unhinged codex feature request day. you know what to do
S...
jason
@jxnlco • Jun 20
Replying to @puncher @ajambrosino and @davidlinclark I want subagent names to have different spawn rates. And shiny names
get fast for free.
199
17 19
• 391
ilıl 129K
SIGKITTEN
@SIGKITTEN • Jun 22 check whats up with this
and fix
S...
Kai
@hqmank . Jun 22
1/
Codex is quietly killing your SSD.
It writes diagnostic logs to disk non-stop, even when you're not... tokio:: runtime → ws: : packet loe/compaler. napboke : INFO
tokio: cruntime → ws::packet.log/compaler.n
KAC СoК3o: runeie → ws- packerLoc/oomoaler nanookesure
tokio: :runtime → ws: :packet.log/oompaler
TRACE tok1o:: runtime → ws:: packet
TRAUE LOKJU CUHLLC Wsudukelatu
KALE LO ulme →wsoackee
DEBuG nooit
ARN kernel:
MANT KETHCLAAT
DCSUD SHO
Codex
7 Andrew Ambrosino
don't you work here
1
{71
70
@ajambrosino • Jun 22
ill 4.8K
...
66
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Roscoe Rubin-Rottenberg @knotbin.com · 24/06/2026
all I'll say is that if an anthropic employee posted anything remotely like this, they would be immediately shot 57 times.
Tibo & @thsottiaux • Jun 21|
An abundance of usage resets
are coming to Codex. But not to Claude.
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Roscoe Rubin-Rottenberg @knotbin.com · 20/06/2026
best I can do after fiddling with a while with the bsky permission sets. none of them include interacting with content (follow, repost or like creation) so I need custom repo additions, which adds the "Manage your profile, posts, likes and follows" warning even though we don't manage the profile.
auth.sprk.so wants to access your @knotbin.com
account
Bluesky
Manage your profile, posts, likes and follows
Full Spark App Permissions
& Manage Spark content and interactions, private preferences and notifications, and
Spark-specific app features and data.
Read-only access to all content View Bluesky network content from account ® perspective, and read all notifications and
preferences.
Create Bluesky Posts
Can not update or delete posts.
Delete Bluesky Content * Clean up public account history: posts,
reposts, and likes. By clicking Authorize, you will grant this application access to your account in accordance
with its terms of service and privacy policy.
Deny access
Authorize
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Roscoe Rubin-Rottenberg @knotbin.com · 19/06/2026
every single atproto hacker news comments section:
Alt text: Meme using an Avengers battle scene. In the top panel, a huge army labeled “danabramov,” “mozzius,” “blacksky already…,” “pfraze,” and “knowtheory” arrives through glowing portals, with smaller captions like “none of that is true” and “relays are actually pretty cheap now.” In the bottom panel, Thanos labeled “vc funding” faces them, while captions read “why not activitypub,” “no one runs other instances,” and “vc funding again.”
58916
Roscoe Rubin-Rottenberg @knotbin.com · 19/06/2026
oh my god he's done it again
Hacker News new | threads | past | comments | ask | show |:
1. There are no instances in ATProto (overreacted.io)
240 points by danabramov 6 hours ago | unvote | flag | hide | 148 comments
2. 4 Hyundai buys Boston Dynamics (startupfortune.com)
469 points by ck2 4 hours ago | flag | hide | 234 comments
3. A I used sound waves to make espresso. It could cut coffee brew...
104 points by zeristor 6 hours ago | flag | hide | 68 comments
01356
Roscoe Rubin-Rottenberg @knotbin.com · 18/06/2026
Our public high school rents out the entire Barclays Center for graduation bc we have 1500 seniors graduating. It’s very funny to have a Jumbotron at a graduation.
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Roscoe Rubin-Rottenberg @knotbin.com · 18/06/2026
I left 5 stars but my only complaint is that the tab routing in domain management causes a full reload and I wish it was done client side. Other than that, it's amazing!
020
Roscoe Rubin-Rottenberg @knotbin.com · 13/06/2026
official confirmation from reddit on this post: www.reddit.com/r/ClaudeCode...
ClaudeOfficial OP 14h ago
Tomorrow’s Build Day event is still on. We’ll be building on Opus 4.8 instead. See you there!
1 upvote
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Roscoe Rubin-Rottenberg @knotbin.com · 13/06/2026
fable /'fāb(э)I/

A fable is a short, fictitious story designed to teach a specific

moral lesson. It typically features anthropomorphized animals,
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Roscoe Rubin-Rottenberg @knotbin.com · 13/06/2026
whoa @sprk.so posts now show up in @sifa.id! @gui.do has been COOKING lately and sifa is just such a great app. highly recommend.
Activity Active on: +10 more Jun Bluesky network = You & Me Events * Popfeed • Spark Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Mon Wed Fri Oh my god it's hideous f 1d ago new yorkers: experiencing pure transcendent joy after the biggest com... 1d ago california things 2d ago * checked in, got gelato and ran into Riley Testut and his team! 4d ago

View full activity →
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Roscoe Rubin-Rottenberg @knotbin.com · 11/06/2026
Oh my god it’s hideous 🤩
The liquid-glass-ish custom tab bar (custom instagram tab bar UI and logic on a rounded Liquid Glass bar, not the regular Liquid Glass tab bar)
000
Roscoe Rubin-Rottenberg @knotbin.com · 11/06/2026
new yorkers: experiencing pure transcendent joy after the biggest comeback in finals history the europeans on my tl:
"Nofunjack" meme image holding "NO FUN" sign with "I HATE HAVING FUN" on their shirt
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