I was hoping jolt was a command line tool in the style of jq. I dont believe jq does transformations of json, only queries.

I guess that depends on one's definition of transformation but:

    echo '{"hello": "world"}' | jq '{brave:{"new": .hello}}'

it also doesn't even require JSON input, meaning one could use it strictly for composing valid output JSON:

    # where -n = null input
    jq -n --arg foo bar '{"meet me": ("at the "+$foo)}'

I use it for transforming AWS responses all the time. I put jq up there with vim as one of the "must have" tools. In fact, the keys `%!jq .` are burned into my fingers because I type them a lot

_ed: fixed a mobile character replacement, added in the --arg flag I couldn't remember at the time_