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Glama's TDQS Registry Has Now Scored 228,369 MCP Tools and Finds 97% of Descriptions Carry Defects
The Tool Definition Quality Score spec (published by Glama on 2026-04-03, resurfaced via Show HN on 2026-09-03) scores MCP tool definitions on six weighted per-tool dimensions and four server-level ones. The live registry figures are what is new: 228,369 tools scored, 97% of descriptions carrying defects, 73.5% still clearing the B-tier passing bar, well-described tools picked about 2.6x more often, and rewriting descriptions alone improving task success by roughly 6 percentage points. If MCP is a distribution channel, the tool description is the listing copy, and 2.6x selection lift for prose changes is the cheapest optimization available to anyone shipping a server.
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