curl -s https://www.pathwren.workers.dev/crawler/yandexscreenshotbot.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

YandexScreenshotBot

Yandex · Tools and frameworks · json

User-agent: YandexScreenshotBot
Disallow: /
robots.txt tokenYandexScreenshotBot
User-agent containsYandexScreenshotBot
OperatorYandex
CategoryTools and frameworks
robots.txtignores the * group; obeys rules named for its own token
Verify byreverse DNS

What it is

Takes a screenshot of a page. Documented as not taking the general robots.txt rules into account.

What blocking it costs you

Yandex surfaces that show a page thumbnail show nothing for you.

Full user-agent string

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Safari/537.36 (compatible; YandexScreenshotBot/3.0; +http://yandex.com/bots)

Allow it instead

User-agent: YandexScreenshotBot
Allow: /

Ask this page a question, with one GET

A question about this page, answered by a call you can make right now — no key, no account, no JSON-RPC, nothing to assemble. The query string is already filled in with this page's own subject.

curl -s 'https://www.pathwren.workers.dev/tools/verification-methods?crawler=yandexscreenshotbot&s=client-dossiers'

Every parameter above is a value the endpoint reads, not an address it visits: nothing is fetched on your behalf. Called without any parameter, each endpoint returns its own specification instead of an error. All of them.

Operator documentation: https://yandex.com/support/webmaster/en/robot-workings/check-yandex-robots
Machine copies: json · markdown
Policies that name this crawler: allow-all · maximum-ai-visibility