Exchange OAuth2 token
<Warning>
This endpoint expects `application/x-www-form-urlencoded`.
</Warning>
<Warning>
Try it will not return usable data for this route. It depends on a live OAuth2 authentication context outside the docs.
</Warning>
<Info>
Get started with OAuth by reading [our guide](/oauth2/creating-an-application).
</Info>
<Info>
Only the `authorization_code` grant type is supported. Authorization codes are one-time use and expire after 5 minutes.
</Info>
PKCE is supported for both Private and Public applications but Public applications must send `code_verifier` and must not send `client_secret`.
Private applications must send `client_secret`.
Only `S256` PKCE is supported.
