How to trigger a remote build via a URL for a Jenkins job

jenkins-remote-build-trigger.md

1. Create new user (e.g. webhook) with the following permissions: Overall > Read, Job > Build, Job > Read & Job > Workspace. Login as the user and get their API token
2. Under a job, enable "Trigger Builds Remotely" and set an authentication token
3. Trigger a POST request with the following structure:

http://{USER}:{API_TOKEN}@{JENKINS_URL}/job/{JOB}/build?token={AUTHENTICATION_TOKEN}

Hay how can i get The API Token??
i can get the Authentication Token from Trigger Build Remotely, but i struck at getting API Token.
Can you please help me out to get this. Because when i execute the Job i did not have provision to place the Username and Password.
Am in bit hurry can you please help me on this

Thanks,
Gouri