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List of license keys: GET http://teamcity:8111/app/rest/server/licensingData/licenseKeys
License key details: GET http://teamcity:8111/app/rest/server/licensingData/licenseKeys/<license_key>
Add license key(s):  POST text/plain newline-delimited keys to http://teamcity:8111/app/rest/server/licensingData/licenseKeys
Delete a license key:  DELETE http://teamcity:8111/app/rest/server/licensingData/licenseKeys/<license_key>

TeamCity Data Entities Requests

Projects and Build Configuration/Templates Lists

List of projects: GET http://teamcity:8111/app/rest/projects
Project details: GET http://teamcity:8111/app/rest/projects/<projectLocator>
, where <projectLocator> can be id:<internal_project_id> or name:<project%20name>

List of Build Configurations: GET http://teamcity:8111/app/rest/buildTypes
List of Build Configurations of a project: GET GET http://teamcity:8111/app/rest/projects/<projectLocator>/buildTypes<projectLocator>buildTypes 

Get projects with sub-projects/ Build Configurations data and their order as configured by the specified user on the Overview page: GET  GET  http://teamcity:8111/app/rest/projects?locator=selectedByUser:current&fields=count,project(id,parentProjectId,projects(count,project(id),$locator(selectedByUser:current)),buildTypes(count,buildType(id),$locator(selectedByUser:current)))

List of templates for a particular project: GET http://teamcity:8111/app/rest/projects/<projectLocator>/templates.templates
List of all the templates on the server: GET http://teamcity:8111/app/rest/buildTypes?locator=templateFlag:true

Project Settings

Get project details: GET GET http://teamcity:8111/app/rest/projects/<projectLocator>/
Delete a project: DELETE http://teamcity:8111/app/rest/projects/<projectLocator>/
Create a new empty project: POST plain text (name) to http://teamcity:8111/app/rest/projects/
Create (or copy) a project: POST XML <newProjectDescription name='New Project Name' id='newProjectId' copyAllAssociatedSettings='true'><parentProject locator='id:project1'/><sourceProject locator='id:project2'/></newProjectDescription> to http://teamcity:8111/app/rest/projects . Also see an example.
Edit project parameters: GET/DELETE/PUT http://teamcity:8111/app/rest/projects/<projectLocator>/parameters/<parameter_name>  (produces XML, JSON and plain text depending on the "Accept" header, accepts plain text and XML and JSON) Also supported are requests .../parameters/<parameter_name>/name and .../parameters/<parameter_name>/value.

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