use pipe for curl data

Question

I'm trying to pass the cat output to curl:

$ cat file | curl --data '{"title":"mytitle","input":"-"}' http://api

But input is literally a -.

Answer 1

I spent a while trying to figure this out and got it working with the following:

cat data.json | curl -H "Content-Type: application/json" -X POST --data-binary @- http://api