AMS - is the intention to always return a hash?

[L. Preston Sego III]

for example, if we are serializing an array, does that mean a key is required for the array?

[Steve Klabnik]

Generally speaking, it's considered best practice to always root your
JSON via an object. This is laregely due to a security flaw in
browsers that has since been patched up, but it's still basically a
given.

[L. Preston Sego III]

should we default to always having a root?

for single objects:

{ root: { object } }

array:

{ roots: [{ rootless object}, { rootless object }] }

?

then should arrays have the option to be super verbose with roots?

{ roots: [ {root: { object } , { root: { object } } ] }

[Steve Klabnik]

As of 0.10, that depends entirely on the particular adapter. JSON-API,
for example, has a root. HAL does not. Classic AMS usually does,
unless you ask for no root, or maybe the other way around, I forget.