2022-09-26 UTC
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[snarfed]1 code is https://github.com/snarfed/bridgy/blob/02e55f4132a67ad9581412e19ff6558f94b59c10/micropub.py#L188-L228 . it uses https://flask.palletsprojects.com/en/2.2.x/api/#flask.flash to serve and render the token, which temporarily stores it in a cookie