Trouble using `get` on "posts"

I’m building a custom theme and have a custom home page set up. On that page I’d like to show a list of my tags as well as my three most recent posts.

Here’s my routes.yaml file:

    data: page.home
    template: home

    permalink: /{slug}/
    template: index

  tag: /tag/{slug}/
  author: /author/{slug}/

I’m using {{#get 'tags'}} and {{#foreach tags}} with no problem, but when I create the block to pull in recent posts, nothing shows up.

I have posts there, and can get them via the API, but not with the template tag. Here’s how I’m using it:

{{#get "posts"}}
  {{#foreach posts}}
    <h2 class="title">{{title}}</h2>

Any idea what I’m doing wrong? Are the posts not available in certain places or do I need to explicitly somehow make that data available with the data prop in routes?