Yandex
Yandex is a web search engine that also offers identity provider (IdP) services.
To set up Yandex for Cloudflare Access:
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Log in to your Yandex account.
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Select Open a new OAuth Application.
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Select New client.
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Complete the required fields.
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Choose Yandex.Passport API to set the basic scopes.
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Select the Access to email address, Access to user avatar, and Access to username, first name and surname, gender options.
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Select Platform and select Web Services.
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In the Callback URL #1 field, enter the following URL:
https://<your-team-name>.cloudflareaccess.com/cdn-cgi/access/callbackYou can find your team name in Zero Trust under Settings > Custom Pages.

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Select Add.
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Scroll to the Platforms card, and select Submit.
Yandex OAuth card titled Cloudflare Access App displays.
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Copy the ID and Password.
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In Zero Trust, go to Settings > Authentication.
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Under Login methods, select Add new.
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Select Yandex.
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Paste the ID and password in the appropriate fields.
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Select Save.
 
{  "config": {    "client_id": "<your client id>",    "client_secret": "<your client secret>"  },  "type": "yandex",  "name": "my example idp"}