How to represent a count of relationships instead of including them?

I am fetching a list of resources. Each resource has a “has many” relationship and I need to display its count. However, I don’t want to include all of the IDs of the related resources because it is too much information.

For example, let’s say I am fetching a list of blog posts, and need to display the count of comments. I don’t want to fetch hundreds of comment records just to display the count.

What is the best way to represent this data?

For now, the best way is to put it in the meta object of the relationship object, like so:

  "type": "people",
  "id": "1",
  "attributes": { /* some attributes.. */ },
  "relationships": {
    "friends": { 
      "meta": { 
        "count": 32
      // links are optional here, but *strongly* recommended.
      // for the meaning of these links, see 
      "links": { 
        "self": "",
        "related": ""

I think this is more complicated. I tried to explain it here:

@ethanresnick, do you think here is a typo in the links section above with both self and related links pointing to the same end point?