seeing a claude-code using useragent, then a "real" user after hours of scraping, then a fake "real browser" useragent following claude's behaviors
i have a second ban flag that replaces all pages with Mad Professor Mariarti for people like this.
i have a second ban flag that replaces all pages with Mad Professor Mariarti for people like this.
July 4, 2026 at 10:46 PM
seeing a claude-code using useragent, then a "real" user after hours of scraping, then a fake "real browser" useragent following claude's behaviors
i have a second ban flag that replaces all pages with Mad Professor Mariarti for people like this.
i have a second ban flag that replaces all pages with Mad Professor Mariarti for people like this.
It's like if your useragent is desktop Linux – slap a Firefox 0day down the chute slurp this motherfucker's Bitcoin wallet immediately
December 12, 2024 at 3:26 AM
It's like if your useragent is desktop Linux – slap a Firefox 0day down the chute slurp this motherfucker's Bitcoin wallet immediately
dear scaninfo@paloaltonetworks.com, thank you for scanning my server. it makes it feel less alone in the vastness of the internet. however, please make your useragent shorter.
November 22, 2024 at 1:39 AM
dear scaninfo@paloaltonetworks.com, thank you for scanning my server. it makes it feel less alone in the vastness of the internet. however, please make your useragent shorter.
congrats to palo alto for setting the longest web crawler useragent I've ever seen. it's a whole damn essay. won't even fit in this post so I'm putting it in a reply:
November 22, 2024 at 1:37 AM
congrats to palo alto for setting the longest web crawler useragent I've ever seen. it's a whole damn essay. won't even fit in this post so I'm putting it in a reply:
I'm intrigued by the number of describeRepo queries my PDS is getting, mostly from a Dart useragent. I guess someone has a monitoring project?
November 20, 2024 at 5:01 AM
I'm intrigued by the number of describeRepo queries my PDS is getting, mostly from a Dart useragent. I guess someone has a monitoring project?
ありがとうUserAgent-Switcher
github.com/ray-lothian/...
github.com/ray-lothian/...
GitHub - ray-lothian/UserAgent-Switcher: A User-Agent spoofer browser extension that is highly configurable
A User-Agent spoofer browser extension that is highly configurable - ray-lothian/UserAgent-Switcher
github.com
March 15, 2026 at 8:37 AM
ありがとうUserAgent-Switcher
github.com/ray-lothian/...
github.com/ray-lothian/...
someone has discovered that if you use a fake googlebot useragent on tcrf, it will actually check that you're a real googlebot, and if not, bans you immediately, forever
August 1, 2026 at 4:24 PM
someone has discovered that if you use a fake googlebot useragent on tcrf, it will actually check that you're a real googlebot, and if not, bans you immediately, forever
landesbehoerden blocken curl via useragent und nennen es web application firewall
July 22, 2026 at 9:39 AM
landesbehoerden blocken curl via useragent und nennen es web application firewall
if i change my useragent to chrome then it magically works now.
once again, how are you people not embarrassed?! you have a trillion goddamn dollars how did you make a website that doesn't work!
once again, how are you people not embarrassed?! you have a trillion goddamn dollars how did you make a website that doesn't work!
September 24, 2026 at 6:26 PM
if i change my useragent to chrome then it magically works now.
once again, how are you people not embarrassed?! you have a trillion goddamn dollars how did you make a website that doesn't work!
once again, how are you people not embarrassed?! you have a trillion goddamn dollars how did you make a website that doesn't work!
paul this is how we get useragent strings
September 15, 2023 at 1:25 AM
paul this is how we get useragent strings
Is anyone running some sort of labeler aggregation tool that is hitting has a UserAgent of LabelRelay/1.0 Fetcher and is hitting the queryLabels endpoint? You've got a path bug and your fetcher is hitting the bare base URL instead of the xrpc endpoint, and redialing every 30 seconds.
September 23, 2026 at 3:50 PM
Is anyone running some sort of labeler aggregation tool that is hitting has a UserAgent of LabelRelay/1.0 Fetcher and is hitting the queryLabels endpoint? You've got a path bug and your fetcher is hitting the bare base URL instead of the xrpc endpoint, and redialing every 30 seconds.
doubly so because that page is only fed if your useragent matches one of these:
"SummalyBot|openai|Halobot|facebook|duckassistant|Aranet|Qwantbot|YouBot|babbar|ChatGPT|dialtoneapp|LinerBot|SlickBot|NotebookLM|Claude-User|ClaudeBot|anthropic|MistralAI|iAskBot|iask.ai"
"SummalyBot|openai|Halobot|facebook|duckassistant|Aranet|Qwantbot|YouBot|babbar|ChatGPT|dialtoneapp|LinerBot|SlickBot|NotebookLM|Claude-User|ClaudeBot|anthropic|MistralAI|iAskBot|iask.ai"
June 13, 2026 at 7:56 PM
doubly so because that page is only fed if your useragent matches one of these:
"SummalyBot|openai|Halobot|facebook|duckassistant|Aranet|Qwantbot|YouBot|babbar|ChatGPT|dialtoneapp|LinerBot|SlickBot|NotebookLM|Claude-User|ClaudeBot|anthropic|MistralAI|iAskBot|iask.ai"
"SummalyBot|openai|Halobot|facebook|duckassistant|Aranet|Qwantbot|YouBot|babbar|ChatGPT|dialtoneapp|LinerBot|SlickBot|NotebookLM|Claude-User|ClaudeBot|anthropic|MistralAI|iAskBot|iask.ai"
Reddit is now blocking Apollo’s useragent 😔
July 25, 2024 at 10:51 PM
Reddit is now blocking Apollo’s useragent 😔
the "ChatGPT"-only useragent is unique in this behavior compared to other UAs i've seen ("ChatGPT-User/1.0" / "OAI-SearchBot" / "GPTBot", etc..)
March 22, 2026 at 6:48 AM
the "ChatGPT"-only useragent is unique in this behavior compared to other UAs i've seen ("ChatGPT-User/1.0" / "OAI-SearchBot" / "GPTBot", etc..)
いま世界で一番 Chromium の Loader における UserAgent の取り扱いに詳しくなってる (過言)
August 12, 2025 at 1:19 PM
いま世界で一番 Chromium の Loader における UserAgent の取り扱いに詳しくなってる (過言)
nominating this scanner script for the best useragent of the year award
June 11, 2024 at 11:48 AM
nominating this scanner script for the best useragent of the year award
Before i forget: Changelog!
Started actually using the API!
Started using useragent (per request of danbooru admins)
Added post tags to alt text (shows instead of "girls kissing"
Bot is back up (for now). LMK if there are any issues!!
Started actually using the API!
Started using useragent (per request of danbooru admins)
Added post tags to alt text (shows instead of "girls kissing"
Bot is back up (for now). LMK if there are any issues!!
April 28, 2026 at 11:57 AM
Before i forget: Changelog!
Started actually using the API!
Started using useragent (per request of danbooru admins)
Added post tags to alt text (shows instead of "girls kissing"
Bot is back up (for now). LMK if there are any issues!!
Started actually using the API!
Started using useragent (per request of danbooru admins)
Added post tags to alt text (shows instead of "girls kissing"
Bot is back up (for now). LMK if there are any issues!!
There's this obvious slop site that's been making the rounds recently which returns basic UserAgent information but frames it in this incredibly alarmist manner, despite not being any meaningfully different from the average "what's my IP" website
May 9, 2026 at 6:45 PM
There's this obvious slop site that's been making the rounds recently which returns basic UserAgent information but frames it in this incredibly alarmist manner, despite not being any meaningfully different from the average "what's my IP" website
getting cloudflared everywhere cuz of my windows 7 useragent :(
November 2, 2024 at 9:28 PM
getting cloudflared everywhere cuz of my windows 7 useragent :(
ooh, exciting!!! his useragent changed again.
from windows Chrome 146, to Brave on his iPhone (very fancy, was the VPN any better?), to ... oh boy, I sure hope this free VPN client he's using didn't downgrade him to Chrome 109.
maybe I should redirect him to a virus scanner
from windows Chrome 146, to Brave on his iPhone (very fancy, was the VPN any better?), to ... oh boy, I sure hope this free VPN client he's using didn't downgrade him to Chrome 109.
maybe I should redirect him to a virus scanner
March 24, 2026 at 2:24 PM
ooh, exciting!!! his useragent changed again.
from windows Chrome 146, to Brave on his iPhone (very fancy, was the VPN any better?), to ... oh boy, I sure hope this free VPN client he's using didn't downgrade him to Chrome 109.
maybe I should redirect him to a virus scanner
from windows Chrome 146, to Brave on his iPhone (very fancy, was the VPN any better?), to ... oh boy, I sure hope this free VPN client he's using didn't downgrade him to Chrome 109.
maybe I should redirect him to a virus scanner
Before anyone else wastes an entire bloody morning looking for the cause of 403 errors, if you're using LWP::UserAgent in #Perl and the server is behind Cloudflare, you probably just need to set a non-default user_agent.
Cloudflare are blocking UAs containing libwww.
Cloudflare are blocking UAs containing libwww.
September 22, 2026 at 11:42 AM
Before anyone else wastes an entire bloody morning looking for the cause of 403 errors, if you're using LWP::UserAgent in #Perl and the server is behind Cloudflare, you probably just need to set a non-default user_agent.
Cloudflare are blocking UAs containing libwww.
Cloudflare are blocking UAs containing libwww.
every time your site gets crawled by the GPTBot useragent you take a drink
June 11, 2024 at 9:34 PM
every time your site gets crawled by the GPTBot useragent you take a drink
sorry but if you can't even be bothered to update your shitty off-the-shelf scraper to put a real contact page in the useragent, i guess my webserver can't be bothered to keep your connection open. bye bye.
August 30, 2026 at 1:34 PM
sorry but if you can't even be bothered to update your shitty off-the-shelf scraper to put a real contact page in the useragent, i guess my webserver can't be bothered to keep your connection open. bye bye.
my kingdom for a mobile browser that can lie about its useragent and devicewidth.
June 6, 2026 at 9:11 PM
my kingdom for a mobile browser that can lie about its useragent and devicewidth.