It depends what you mean.
If "I am in" just refers to a person physically present in a location, use "Sí, pero yo estoy en..."
Example:
Person 1: Are you available?
Person 2: Yes, but I am in the library - "Sí, pero yo estoy en la biblioteca."
If "I am in" is the slang form for "I have successfully passed the entrance requirement of some club/school/group and am now a member", this expression does not translate directly. The best translation would, "Sí, pero ahora soy miembro" which means "Yes, but now I'm a member" or "Sí, pero se me han elijido" which means "Yes, but now I have been chosen".
Example:
Person 1: Did you see the bad percentages for getting into college?
Person 2: Yes, but I am in. - "Sí, pero se me han elijido."
If "I am in" is the slang form for "I have successfully entered a guarded physical place" or "I have successfully broken some protective code", you could translate this as "Sí, pero he entrado" which means "Yes, but I entered" or "Sí pero he llegado" which means "Yes, but I arrived" literally but "Yes, but I made it through" colloquially.
Example:
Person 1: Is the virus present in the server mainframe?
Person 2: Yes, but I am in. - "Sí pero he llegado."
yes you do
if you mean how do you say yes in spanish its "si" or if you say the letter "C" in english its the same.
No. In Spanish you say, Dije -Sí yo soy.
Sí.
si.
yes = si (pronounce see) no = no
Sí
Yes
yes i do you just have to know how speeck spanish and got to write in spanish
"Sí estoy de acuerdo" is the Spanish translation for "Yes, I agree"
In Peru the national language is Spanish. In Spanish "yes" is "Si" (pronounced 'see').
You could say "Sí, hablo español."