As of market creation (29 January 2026), the largest Model Context Protocol (MCP) server list directory is mcp.so which lists 17,472 servers.

Resolves to the bucket corresponding to the count of MCP servers listed on the largest MCP server directory online as of December 31, 2026 at 11:59 PM UTC (or the closest snapshot thereafter via an internet archiving service). If there is no online MCP server directory at all, resolves to "<10k" (i.e. as if the count was 0). Note that "k" stands for thousands.