Rankings

MCP server rankings

Built from measurements, not votes: we connected to 2,038 MCP servers and tokenized 43,366 tool definitions. The median server adds ~2,205 tokens to every turn. Read the data study

Lowest token cost MCP serversMeasured servers with at least three tools, ordered by how many tokens their tool definitions add to every model turn. Fewer tokens means cheaper, faster turns and more room for your own context.
Most context-hungry MCP serversThe measured servers that add the most tokens to every turn. Consider loading these on demand or trimming the tool set you enable.
MCP servers with the most toolsMeasured servers ordered by tool count. Large tool sets cost context on every turn and can make tool selection harder for the model.
Popular MCP servers with the best security signalsServers with 100+ GitHub stars, ordered by security score, then popularity. Scores come from the checks listed on each server page and are not a guarantee of safety.