Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given a rich output schema, full parameter documentation, and strong safety annotations, the description covers the essential operational details: credit cost, identifier resolution, and how the result connects to posts_info, posts_comments, and posts_likes. It does not elaborate on the `start` pagination parameter, but the schema already documents it fully.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.