Can I use the Discourse API to authenticate users in another app?

SSO
9

I don’t believe this is explicitly supported, but I would create a session in the same manner the user would do in the web browser:

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curl 'https://try.discourse.org/session' \
  -H 'sec-ch-ua: "Chromium";v="113", "Not-A.Brand";v="24"' \
  -H 'Discourse-Present: true' \
  -H 'DNT: 1' \
  -H 'X-CSRF-Token: …' \
  -H 'sec-ch-ua-mobile: ?0' \
  -H 'User-Agent: …' \
  -H 'Content-Type: application/x-www-form-urlencoded; charset=UTF-8' \
  -H 'Accept: */*' \
  -H 'Referer: https://try.discourse.org/' \
  -H 'X-Requested-With: XMLHttpRequest' \
  -H 'sec-ch-ua-platform: "Linux"' \
  --data-raw 'login=demouser&password=demopassword&second_factor_method=1&timezone=America%2FToronto' \
  --compressed

and duplicate this login logic in the app.