Find a JSON property name that starts with something using JSON Path

From my googling this is not possible in standard json path. However, the jsonpath-plus package extends the specification with @path; and makes the following possible

$..[?(@path.includes("[\'x-"))]
$..*[?(@property === 'price' && @ !== 8.95)]

The above assumes you are using ES6.

Useful to someone else
You can use regular expression using =~ left matches regular expression. For more in formation visit https://github.com/jayway/JsonPath

[?(@.name =~ /foo.*?/i)]