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

LAIONDownloader

LAION / img2dataset · Corpus and dataset builders · json

User-agent: LAIONDownloader
Disallow: /
robots.txt tokenLAIONDownloader
User-agent containsLAIONDownloader
OperatorLAION / img2dataset
CategoryCorpus and dataset builders
robots.txtnot governed by robots.txt (user-initiated, by operator policy)
Verify byno published verification method

What it is

LAION's downloader, used to materialise the image and text datasets the non-profit publishes for machine-learning research. LAION's own FAQ is the source for its robots.txt position.

What blocking it costs you

Your media is skipped when an open research dataset is built from URL lists. Once a dataset is published, a later block does not remove you from it.

Full user-agent string

LAIONDownloader

Allow it instead

User-agent: LAIONDownloader
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=laiondownloader&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://laion.ai/faq/
Machine copies: json · markdown
Policies that name this crawler: allow-all · block-all-ai · block-datasets · block-disputed · maximum-ai-visibility