Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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Hmm, does the OIDC flow for Twitter use oauth1? It kept failing when I inserted by client ID/secret with a 401, I had to switch to "Consumer Keys" in the twitter developer dashboard to get it working.

yes, twitter only supports oauth1 for social login: <https://developer.x.com/en/docs/authentication/guides/log-in-with-twitter>