They should work by reading a remote Json or web service and display the data in a html page.
1) Autocomplete / UI update plugin.
This plugin will be used to displaying available data send back from Json or web service data feed as the user type in an item to search for. Data should be added to html 5 input control to populate an autocomplete selectable/searchable options. Additionally should be able to specify a control on the page to be updated (should work like google search, while user types ui is updated). Lastly code should be ready to work on delivery and remote url placeholder should be easy to make out, were remoted service location is hosted e.g."------paste in remote url here-----".
2)Content display plugin
This plugin should work by reading the data from a remote service and display the information in in a html wed page. So whatever the service sends to the plugin, the plugin displays(html friendly objects only).
Plugins installation should work similarly to how google analytics does (paste in code snippet with product code/number)