Docs pages

Check a company's trademarks

POST /api/v1/sites/check

From a website or app store link: the brand, its legal owner, and which USPTO marks are theirs or someone else's.

In the MCP server this is check_site.

Example

curl -X POST https://api.joinopenfile.com/v1/sites/check \
  -H "content-type: application/json" \
  -d '{
  "site": "stripe.com"
}'

Name	Type	Required	Description
`site`	string	Yes	A website, or an App Store or Google Play link.
`brand`	string	No	Use this brand instead of the one read from the site.
`owner`	string	No	Use this owner instead of the one read from the site.

Status	When
`400`	Invalid input.
`429`	Too many requests.
`502`	The USPTO or a website didn't answer. Nothing was checked.

The body is the error shape.