Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For an 8-parameter tool with a well-populated schema and annotations, the description covers all non-obvious aspects: the Notion/WordPress workflow, markdown requirement, and publish toggle behavior. It doesn't discuss tags, slug, or category, but these are self-explanatory and fully described in the schema, making the description sufficiently complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.