Check whether a nickname is taken
GET/check-nickname/:name
Look up the nickname (case-insensitive) in the scoreboard via the ByNickname GSI and report whether it is already in use. Used by the demo frontend to nudge players towards a unique handle before they submit a score.
Request
Responses
- 200
- 400
- 403
- 500
Existence flag for the nickname.
Empty nickname after trimming. Body is { "exists": false } (not an error envelope).
Missing or invalid X-Game-Token header.
Server error.