org-confirm-babel-evaluate

org-confirm-babel-evaluate is a variable defined in `ob-core.el'.
Its value is

t

• This variable is safe as a file local variable if its value
  satisfies the predicate which is a byte-compiled expression.
  

Documentation:
Confirm before evaluation.
Require confirmation before interactively evaluating code
blocks in Org-mode buffers. The default value of this variable
is t, meaning confirmation is required for any code block
evaluation. This variable can be set to nil to inhibit any
future confirmation requests. This variable can also be set to a
function which takes two arguments the language of the code block
and the body of the code block. Such a function should then
return a non-nil value if the user should be prompted for
execution or nil if no prompt is required.

Warning: Disabling confirmation may result in accidental
evaluation of potentially harmful code. It may be advisable
remove code block execution from C-c C-c as further protection
against accidental code block evaluation. The
`org-babel-no-eval-on-ctrl-c-ctrl-c' variable can be used to
remove code block execution from the C-c C-c keybinding.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.