Seven phases of rubric construction, from December 2025 to June 2026. Each phase added a defined set of categories; block width encodes how many. Every reference chip is clickable.
of 856 MCP tools across 103 servers contained at least one description smell.
Across 10,831 MCP servers, standard-compliant descriptions get picked by an agent 72% of the time. Non-compliant descriptions get picked 20% of the time.