Application login through Okta authentication process

I want to login to my app through Okta authentication using API.
Currently, I am able to log in using Okta authentication using App credentials from UI.
Can you please help me with this.

Hi @ameys! Check out our Authentication API - Authentication | Okta Developer. I recommend testing using our Postman Collections - Postman Collections | Okta Developer.

Hi @sigama Sigama,
Thank you for your response.
I don’t have any key (api_key) but the client credentials.
Please help.

Hello Team,
I still need help on this.
I have Client ID and secret, redirect url.
Grant type allowed: 1. Authorization code
2. Refresh token
3. Implicit

but still not able to get the access to application through API

please help

Please use this guide to determine which OIDC flow you should be using
https://developer.okta.com/docs/concepts/oauth-openid/#recommended-flow-by-application-type