Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has two undocumented parameters, no annotations, and no output schema, the description is severely incomplete. It does not explain what 'source context' includes, how to use parameters, or what the return value will look like, making it inadequate for reliable tool invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.