Joe Walnes
@waln.es
Building new stuff at Stripe.
Previously: Apple, Google, Thoughtworks, trading, founder.
Open source: websocketd, xstream, hamcrest, and others…
github.com/joewalnes
linkedin.com/in/joewalnes
x.com/joewalnes
Previously: Apple, Google, Thoughtworks, trading, founder.
Open source: websocketd, xstream, hamcrest, and others…
github.com/joewalnes
linkedin.com/in/joewalnes
x.com/joewalnes
I've cracked it! A foolproof unbreakable human vs AI captcha test.
---
Are you human?
◯ Yes - I'm definitely human
◯ Yes — I'm definitely human
---
Are you human?
◯ Yes - I'm definitely human
◯ Yes — I'm definitely human
February 4, 2026 at 10:57 PM
I've cracked it! A foolproof unbreakable human vs AI captcha test.
---
Are you human?
◯ Yes - I'm definitely human
◯ Yes — I'm definitely human
---
Are you human?
◯ Yes - I'm definitely human
◯ Yes — I'm definitely human
Just setup plausible. Took less than a minute to get up and running. Beautiful ❤️
August 20, 2025 at 3:38 AM
Just setup plausible. Took less than a minute to get up and running. Beautiful ❤️
What web analytics tools y’all using these days?
Looking for:
- lightweight (fast loading)
- privacy centric: no creepiness, no ad tracking, just give me high level insights,
- GDPR friendly
- simple dashboards
- alerts of spikes
- not too expensive to run on many sites (doesn’t have to be free)
Looking for:
- lightweight (fast loading)
- privacy centric: no creepiness, no ad tracking, just give me high level insights,
- GDPR friendly
- simple dashboards
- alerts of spikes
- not too expensive to run on many sites (doesn’t have to be free)
August 20, 2025 at 1:43 AM
What web analytics tools y’all using these days?
Looking for:
- lightweight (fast loading)
- privacy centric: no creepiness, no ad tracking, just give me high level insights,
- GDPR friendly
- simple dashboards
- alerts of spikes
- not too expensive to run on many sites (doesn’t have to be free)
Looking for:
- lightweight (fast loading)
- privacy centric: no creepiness, no ad tracking, just give me high level insights,
- GDPR friendly
- simple dashboards
- alerts of spikes
- not too expensive to run on many sites (doesn’t have to be free)
SaaS builders: which libraries/frameworks are you using to interact with LLMs?
How are you dealing with LLM costs? Is it a problem?
How are you dealing with LLM costs? Is it a problem?
July 13, 2025 at 4:50 PM
SaaS builders: which libraries/frameworks are you using to interact with LLMs?
How are you dealing with LLM costs? Is it a problem?
How are you dealing with LLM costs? Is it a problem?
July 13, 2025 at 4:46 PM
A car commute is the perfect amount of time to build and ship ideas. I just gotta keep my eyes on the road.
Looking for a fully voice controlled AI coding tool, ideally works on phone.
What tools can help me do this? Or do I need to vibe code it myself (while not driving!)
Looking for a fully voice controlled AI coding tool, ideally works on phone.
What tools can help me do this? Or do I need to vibe code it myself (while not driving!)
June 30, 2025 at 1:49 AM
A car commute is the perfect amount of time to build and ship ideas. I just gotta keep my eyes on the road.
Looking for a fully voice controlled AI coding tool, ideally works on phone.
What tools can help me do this? Or do I need to vibe code it myself (while not driving!)
Looking for a fully voice controlled AI coding tool, ideally works on phone.
What tools can help me do this? Or do I need to vibe code it myself (while not driving!)
Like talking about AI and the future of business? Like creating content and building community?
Come help us!
stripe.com/jobs/listing...
Come help us!
stripe.com/jobs/listing...
Community Communications, Product/Developer
Help increase the GDP of the internet as part of our Communications team.
stripe.com
June 27, 2025 at 3:11 PM
Like talking about AI and the future of business? Like creating content and building community?
Come help us!
stripe.com/jobs/listing...
Come help us!
stripe.com/jobs/listing...
The second best:
"Test first! Before adding functionality or fixing anything, write a test that can reproduce the failing state first. Prefer to build high level integration tests that actually surface the issue in a realistic environment. Be confident it works before stopping."
"Test first! Before adding functionality or fixing anything, write a test that can reproduce the failing state first. Prefer to build high level integration tests that actually surface the issue in a realistic environment. Be confident it works before stopping."
June 24, 2025 at 5:15 PM
The second best:
"Test first! Before adding functionality or fixing anything, write a test that can reproduce the failing state first. Prefer to build high level integration tests that actually surface the issue in a realistic environment. Be confident it works before stopping."
"Test first! Before adding functionality or fixing anything, write a test that can reproduce the failing state first. Prefer to build high level integration tests that actually surface the issue in a realistic environment. Be confident it works before stopping."
Reposted by Joe Walnes
Experimenting with something like this for @compiler-explorer.com - wondering what your thoughts are? AI is getting everywhere, and can be divisive. I'm hoping something like this - so long as I can get the output quality high enough - is a net benefit to help folks learn more about their code.
May 23, 2025 at 8:09 PM
Experimenting with something like this for @compiler-explorer.com - wondering what your thoughts are? AI is getting everywhere, and can be divisive. I'm hoping something like this - so long as I can get the output quality high enough - is a net benefit to help folks learn more about their code.
Stripe Sessions 2025 | Product keynote
YouTube video by Stripe
www.youtube.com
May 7, 2025 at 4:06 PM
Ergo mech portable setup… 3 modes:
1. Full: best ergonomics. Takes about 20 seconds to setup.
2: Quick: busting out laptop quickly. Takes about 5 seconds.
3: Tiny: works on lap, plane tray, etc.
1. Full: best ergonomics. Takes about 20 seconds to setup.
2: Quick: busting out laptop quickly. Takes about 5 seconds.
3: Tiny: works on lap, plane tray, etc.
April 15, 2025 at 4:12 AM
Ergo mech portable setup… 3 modes:
1. Full: best ergonomics. Takes about 20 seconds to setup.
2: Quick: busting out laptop quickly. Takes about 5 seconds.
3: Tiny: works on lap, plane tray, etc.
1. Full: best ergonomics. Takes about 20 seconds to setup.
2: Quick: busting out laptop quickly. Takes about 5 seconds.
3: Tiny: works on lap, plane tray, etc.
The Studio S1E2 is an incredible piece of self-referential cinematography
April 6, 2025 at 4:50 AM
The Studio S1E2 is an incredible piece of self-referential cinematography
March 19, Stripe's hosting a live office hours on Stripe's open source Agent Toolkit.
(Our team is hiring btw)
www.youtube.com/watch?v=vdXP...
(Our team is hiring btw)
www.youtube.com/watch?v=vdXP...
Introducing the Stripe Agent Toolkit
YouTube video by Stripe Developers
www.youtube.com
March 6, 2025 at 8:08 PM
March 19, Stripe's hosting a live office hours on Stripe's open source Agent Toolkit.
(Our team is hiring btw)
www.youtube.com/watch?v=vdXP...
(Our team is hiring btw)
www.youtube.com/watch?v=vdXP...
Try Atlas
Let us know how it goes
Let us know how it goes
February 8, 2025 at 6:01 PM
Try Atlas
Let us know how it goes
Let us know how it goes
We’ll know we’ve reached AGI when we see models that can figure out the naming convention of models.
February 5, 2025 at 2:25 PM
We’ll know we’ve reached AGI when we see models that can figure out the naming convention of models.
Reposted by Joe Walnes
What happens when LLMs train on code that's popular but wrong? zdimension.fr/everyone-get... explores this, with interactive diagrams exploring the error
Everyone gets bidirectional BFS wrong
People really need to stop blindly copying code from the Internet.
zdimension.fr
February 4, 2025 at 7:24 PM
What happens when LLMs train on code that's popular but wrong? zdimension.fr/everyone-get... explores this, with interactive diagrams exploring the error
httptap.
How this tool decrypts https traffic is fascinating and elegant.
How the tool was made is even more so.
github.com/monasticacad...
How this tool decrypts https traffic is fascinating and elegant.
How the tool was made is even more so.
github.com/monasticacad...
GitHub - monasticacademy/httptap: View HTTP/HTTPS requests made by any Linux program
View HTTP/HTTPS requests made by any Linux program - monasticacademy/httptap
github.com
February 5, 2025 at 4:39 AM
httptap.
How this tool decrypts https traffic is fascinating and elegant.
How the tool was made is even more so.
github.com/monasticacad...
How this tool decrypts https traffic is fascinating and elegant.
How the tool was made is even more so.
github.com/monasticacad...
Looking at a decade of GitHub stars on one of my projects.
It hit Hacker News front page twice. Pretty obvious when.
But aside from that, it shows steady and remarkably constant organic growth. I have no idea how, and I'd like to learn more.
How do you discover new projects?
It hit Hacker News front page twice. Pretty obvious when.
But aside from that, it shows steady and remarkably constant organic growth. I have no idea how, and I'd like to learn more.
How do you discover new projects?
February 1, 2025 at 7:21 PM
Looking at a decade of GitHub stars on one of my projects.
It hit Hacker News front page twice. Pretty obvious when.
But aside from that, it shows steady and remarkably constant organic growth. I have no idea how, and I'd like to learn more.
How do you discover new projects?
It hit Hacker News front page twice. Pretty obvious when.
But aside from that, it shows steady and remarkably constant organic growth. I have no idea how, and I'd like to learn more.
How do you discover new projects?
Reposted by Joe Walnes
I just built a hybrid 16-bit MS-DOS/32-bit Windows executable by hand in NASM so that both parts could share common data sections. To fully conform to the PE specs (which I prefer, for long-term compatibility), the file size must be rounded up to the nearest 512 bytes. So I had some space left over…
January 22, 2025 at 12:36 AM
I just built a hybrid 16-bit MS-DOS/32-bit Windows executable by hand in NASM so that both parts could share common data sections. To fully conform to the PE specs (which I prefer, for long-term compatibility), the file size must be rounded up to the nearest 512 bytes. So I had some space left over…