How to access /rest/agile/1.0 api after Jira OAuth callback?

[Seikyo Cho]

From the Jira OAuth document:

https://developer.atlassian.com/cloud/jira/platform/oauth-2-3lo-apps/

I want to get projects, boards, sprints and issues data from REST API.

I have set read:jira-work scope in both developer console and my web application.

But only the project endpoint works since it's /rest/api/3 or /rest/api/2 type.

curl --request GET \
--url https://api.atlassian.com/ex/jira/11223344-a1b2-3b33-c444-def123456789/rest/api/2/project \
--header 'Authorization: Bearer aBCxYz654123' \
--header 'Accept: application/json'

But for these endpoints:

/rest/agile/1.0/board
/rest/agile/1.0/board/1/sprint
/rest/agile/1.0/board/1/configuration
/rest/agile/1.0/sprint/{sprintId}/issue
/rest/agile/1.0/issue/{issueIdOrKey}/estimation?boardId={boardId}

They can't be gotten via this way:

https://api.atlassian.com/ex/jira/11223344-a1b2-3b33-c444-def123456789/{api}

For example:

https://api.atlassian.com/ex/jira/11223344-a1b2-3b33-c444-def123456789/rest/agile/1.0/board

This will get 401 error:

Access Token Error Request failed with status code 401

However, I didn't find the suitable API what I need for boards, sprints and issues in /rest/api/3 or /rest/api/2.

Then how to get data except project after user finish Jira OAuth callback?