The endpoint that takes the login challenge, client ID, and client secret and gives the ID token and access token is not explicitly mentioned in the provided extracts. However, the process of obtaining these tokens is described in the context of the OAuth 2.0 Authorization Code Flow. In this flow, the user agent (browser, mobile device) is redirected to a login endpoint (e.g., todo24.com/login) with a challenge that contains important request information. Upon successful authentication, the login endpoint redirects the user back to Ory Hydra. Ory Hydra then needs the user's consent and redirects the user agent to the consent endpoint (e.g., todo24.com/consent). Once the user gives consent, the consent endpoint redirects back to Ory Hydra. Hydra then validates the request and issues the access, refresh, and ID tokens. You can validate the access tokens which are sent to your API directly at Ory Hydra, or use an Identity & Access Proxy like Ory Oathkeeper to do it for you. For more detailed information, please refer to the [Ory Hydra documentation](https://www.ory.sh/docs/hydra/case-study).