do i have to set my birthday in every server?

no. save it once with ,birthday set and every server you share with fray that celebrates will wish you.

only in a server's own wish, and only if you saved a year. ,birthday shows your age to you alone.

can it give a birthday role?

yes. the role is given on the day and taken back 24 hours later.

a role for the day: a server can give a birthday role that comes off again 24 hours later.
write the wish: the message takes every welcome variable and a full card, plus how old they're turning when they saved a year.
age stays private: a year is optional, and it's never shown anywhere except a server's own wish.
once a year, every year: each birthday is wished once per server per year, however often fray restarts. the 29th of february is wished on the 28th in other years.

every option is on the docs page.

do i have to set my birthday in every server?: no. save it once with ,birthday set and every server you share with fray that celebrates will wish you.
will it show my age?: only in a server's own wish, and only if you saved a year. ,birthday shows your age to you alone.
can it give a birthday role?: yes. the role is given on the day and taken back 24 hours later.

fray covers moderation, tickets, giveaways, reposts, roblox and ai, so a server doesn't need a separate bot for each of them.