will never cause problems since we're not evaluating those as Javascript anyway
A lot of JSON libraries, e.g. json_decode in PHP, refuse to parse JSON without double-quoted keys. I'm actually curious what you are using to parse it (that isn't running on JavaScript) that allows such things. I don't know the details of your API, but is this an object that you intended to be passed to a jQuery method that re-encodes it with JSON.stringify before sending it to your API?