Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool's surface complexity is low (2 params, 1 required, no nested objects), which lowers the bar, but with no annotations, no output schema, and 0% parameter coverage, the description is the sole source of context. It leaves unanswered what the return value looks like, where chat_id originates, and how limit behaves, making the tool insufficiently specified for reliable invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.