Please note that the REST interface is only available when you have at least version 1.3.0 of the plug-in installed.
/rest/templates4stash/1.0/projects/{project_key}/settings
GET /rest/templates4stash/1.0/projects/{project_key}/settings
PUT /rest/templates4stash/1.0/projects/{project_key}/settings
/rest/templates4stash/1.0/projects/{project_key}/repos/{repo_slug}/template
GET /rest/templates4stash/1.0/projects/{project_key}/repos/{repo_slug}/settings
PUT /rest/templates4stash/1.0/projects/{project_key}/repos/{repo_slug}/settings