untitled.txt

#+NAME: foobar-contents
#+begin_src emacs-lisp
(with-temp-buffer
  (insert-file "/tmp/foobar")
  (buffer-string))
#+end_src

#+RESULTS: foobar-contents
: Curabitur lacinia pulvinar nibh.  Proin neque massa, cursus ut, gravida ut, lobortis eget, lacus.
: Donec at pede.  Curabitur lacinia pulvinar nibh.  Nam euismod tellus id erat.

Replace the "shell" below with "ob-http"
#+begin_src shell :var payload=foobar-contents
echo $payload
#+end_src

#+RESULTS:
| Curabitur lacinia pulvinar nibh. Proin neque massa | cursus ut | gravida ut | lobortis eget | lacus. Donec at pede. Curabitur lacinia pulvinar nibh. Nam euismod tellus id erat. |