This CLI utility helps you digging into particular JSON value slot, it's useful when processing logs contains JSON or just checking against restful API response, it works in a way that processor will skip any non-JSON text so you don't have to rely on totally valid JSON output for this to work.
Run npm install -g jsongrep
to install, then you can pipe any output lines that contains JSON pieces to this CLI command with a JSON path expression as argument, you can find the full list of xpath expression you can use.
cf env your-app | jsongrep credentials.uri
cf env your-app | jsongrep space_id
cf env your-app | jsongrep predix-uaa[0]..uri