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Hisashi Space

I've run my own company for 20 years and still write all the code myself. No office since 2011. I build the small apps and SaaS tools I needed first, and write up what actually happened.

Cloudflare split "Block AI Bots" into Search, Training and Agent. I checked all 26 of my sites through the API

Cloudflare split "Block AI Bots" into Search, Training and Agent. I checked all 26 of my sites through the API

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4 min read

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I run DeepSeek R1 70B from my Tokyo office. Here's the network setup.

I run DeepSeek R1 70B from my Tokyo office. Here's the network setup.

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6 min read
Google vs ChatGPT: which one brings people to a brand-new site first? A month of crawler logs from nine sites

Google vs ChatGPT: which one brings people to a brand-new site first? A month of crawler logs from nine sites

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9 min read
What happened to my one-month-old site during Google's September 2026 spam update

What happened to my one-month-old site during Google's September 2026 spam update

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4 min read
My office AI server hit 88 degrees C, so I made the room cool itself.

My office AI server hit 88 degrees C, so I made the room cool itself.

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6 min read
SshResident at 180% CPU: why my ScanSnap iX2500 took 14 seconds to start, and the fix that wasn't code

SshResident at 180% CPU: why my ScanSnap iX2500 took 14 seconds to start, and the fix that wasn't code

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7 min read
coreaudiod at 112% CPU: the sample-rate mismatch that froze Zoom on my Mac

coreaudiod at 112% CPU: the sample-rate mismatch that froze Zoom on my Mac

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5 min read
Mac keyboard not working? Cmd+Tab dead and input switching broken? Check for a password field hidden in a background app

Mac keyboard not working? Cmd+Tab dead and input switching broken? Check for a password field hidden in a background app

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3 min read
I control 10+ browsers with AI agents from one terminal. Here is how

I control 10+ browsers with AI agents from one terminal. Here is how

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4 min read
Regex couldn't sort my sales emails. A yes/no judgment model could

Regex couldn't sort my sales emails. A yes/no judgment model could

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5 min read
Traffic from ChatGPT jumped! Is it because its crawlers now run JavaScript?

Traffic from ChatGPT jumped! Is it because its crawlers now run JavaScript?

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7 min read
X lead gen ads are back: how to collect names and emails without sending anyone off X

X lead gen ads are back: how to collect names and emails without sending anyone off X

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3 min read
What a free press release did for my startup in 5 days, and what I'd do after launch instead

What a free press release did for my startup in 5 days, and what I'd do after launch instead

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5 min read
Traffic from ChatGPT now brings a quarter of our sign-ups. How we track it, and what we changed

Traffic from ChatGPT now brings a quarter of our sign-ups. How we track it, and what we changed

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4 min read
Selling a lifetime deal on AppSumo? You build the code redemption yourself

Selling a lifetime deal on AppSumo? You build the code redemption yourself

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6 min read
Free press release sites in 2026: I sent my startup's launch to 7 of them

Free press release sites in 2026: I sent my startup's launch to 7 of them

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5 min read
How to rename, add and delete Sidekick workspaces after the shutdown

How to rename, add and delete Sidekick workspaces after the shutdown

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9 min read
I made my SaaS usable from ChatGPT and Claude with a single sign in. What adding MCP taught me about the chat window front door.

I made my SaaS usable from ChatGPT and Claude with a single sign in. What adding MCP taught me about the chat window front door.

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6 min read
Your Google sign-in screen may be showing your personal Gmail. Here's how to change the user support email

Your Google sign-in screen may be showing your personal Gmail. Here's how to change the user support email

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4 min read
SPF, DKIM and DMARC all passed. Gmail still sent my mail to spam.

SPF, DKIM and DMARC all passed. Gmail still sent my mail to spam.

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3 min read
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