tcjson is a Server Side Plugin to add JSON and JSONP support to TeamCity. It is built to emulate the Hudson JSON API.

Built and tested with TeamCity 5.x. TeamCity 6.x supported too.

To install, simply copy the tcjson-[version].zip file to your ~/.BuildServer/plugins directory and restart your server.

Here are some sample HTTP requests.

To see all active builds:

GET /app/json/api/json

To see all active builds for a given project:

GET /app/json/<projectId>/api/json

To see all active builds for a list of projects:

GET /app/json/<projectId1>/<projectId2>/<projectId3>/api/json

Authentication is controlled via the global TeamCity settings. By default it will redirect you to the login page. If you'd like to see a propper 401 response code then simply add /httpAuth/ to the front of the URL.