Prototyping before patent

[Abu]

What is the name of your state? New York
I was wondering, if I have an inventio and wanted to make a protoype before applying for a patent, would that be advisable?
Is the prototypng company like agents or attorneys obliged to keep my invention confidential?

 

[divgradcurl]

I was wondering, if I have an inventio and wanted to make a protoype before applying for a patent, would that be advisable?

I don't know if it's adviseable for you in particular or not -- that would depend on all of the facts of your particular situation -- but its done all of the time.

Is the prototypng company like agents or attorneys obliged to keep my invention confidential?

Not unless you have some sort of agreement with them, such as a signed nondisclosure agreement.