This API is deprecated. Use the viewgame API to view tags on a listing instead.
If you need to search for your own tags specifically, use the search API, like this:
https://ifdb.org/search?json&tag&searchfor=tuid:xxx+mine:yes
(Be sure to authenticate when searching for your own tags!)
The gametags API lets applications read tags on IFDB games.
The gametags API is implemented as an http XML web service at https://ifdb.org/gametags. All parameters are passed as POST data with the HTTP request. As typical for HTTP, there's no session state or context; the entire transaction is carried out as the single request.
id: the TUID for the game you want to update. Ordinary text parameter; required.
mine_only: if this parameter is set, then we'll only return the tags that your username has set on the current game. Boolean parameter; optional.
username: the IFDB username for the account under which the listing will be created. Ordinary text parameter; required if mine_only is true.
password: the user's IFDB password. Ordinary text parameter; required if mine_only is true.
The server replies to the request with an XML object describing the result. The response has this tag structure for a successful transaction:
<response>
<tag>
<name>example</name>
<tagcnt>1</tagcnt>
<gamecnt>1</gamecnt>
</tag>
</response>
The tagcnt tag shows how many users have used that tag on the currently selected game. (Normally, tagcnt will be 1, because it's unusual for a player to add a tag when the game already has that tag.)
The gamecnt tag shows how many games have used that tag.
On error, the reply has this structure:
<response>
<error>Please specify a valid username and password to login.</error>
</response>