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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replace the code and check through the kratos api that this user and password are correct?

it would be better to check if  the Kratos session cookie is valid using the whoami api

so let the login flow complete through kratos, and then get back to this point with the cookie (or token) the front-end got during login