How to identify the articles as peer-reviewed articles with API

I read almost all documentation of crossref and googled many time about this…
But I couldn’t get an answer, so I came here.
What should I do to identify the academic journal articles as peer-reviewed articles?
I went to a REST API documentation to find the answer.
But I couldn’t find a key about peer-reviewed in JSON format.
Are all journal articles on crossref peer-reviewed?
I’m sorry for very basic questions but I’m very confused.

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Hello, and thanks for your question.

We don’t actually collect data about whether or not a publication has been peer reviewed. There’s no “peer review” flag that can be set to ‘true’ or ‘false’. So, that’s not something you’d be able to assess via our API.


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