curl -s https://www.pathwren.workers.dev/category/preview.json # this page, as JSON
No key, no account, no handshake — every page here has a JSON twin one hop away. Machine doors: 6 keyless GET tools · documents.json · changes · llms.txt · openapi.json · agent card · mcp · a2a
Read your Open Graph tags when someone shares a link. Blocking these is almost always an accident.
| Crawler | Token | Operator | Cost of blocking |
|---|---|---|---|
| facebookexternalhit | facebookexternalhit | Meta | Severe and usually accidental. Your links share as bare grey boxes with no title, image or… |
| GoogleMessages | GoogleMessages | Your links appear as bare URLs with no title or image in Google Messages chats. A preview … | |
| Slackbot | Slackbot | Slack | Slack stops being able to read your robots.txt, which is a strange thing to want. Block th… |
| Slackbot-LinkExpanding | Slackbot-LinkExpanding | Slack | Your links appear in Slack as bare URLs. Inside working teams that quietly costs you click… |