[Closed] [Script request] – Manipulate multiple tangent weights

I have been looking for a tool that let you manipulate multiple (custom) tangent weights at once. And i’m not talking about setting the regular smooth, linear, ect, but actually controlling the inTangentLength, outTangentLength and inTangent, outTangent on large sets of keys.

I’m looking for ways to scale or set definite values on both the length and the angle.
If such tool already exists i would be glad to know.