In https://github.com/ducaale/xh it's something like

  xh POST api.github.com/repos/owner/repo/issues \
    Authorization:'Bearer ghp_token123' \
    Accept:application/vnd.github.v3+json \
    title='Bug Report' \
    body='Something is broken' \
    labels:='["bug","priority-high"]' \
    assignees:='["developer1","developer2"]'

curlie has had the best balance of ergonomics and power of all the cli tools I've tried. It's full curl underneath but provides a nice ergonomics layer that matches tools like httpie. https://github.com/rs/curlie