tc39-mcp for Cursor
io.github.xyzzylabs/tc39-mcp
Independent MCP server for the TC39 specs (ECMA-262 + ECMA-402): clauses, search, diffs, history.
client:Cursor
transport:streamable-http
runtime:npm
tools:17
Install tc39-mcp in Cursor
~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json
{
"mcpServers": {
"tc39-mcp": {
"url": "https://mcp.xyzzylabs.ai/tc39/mcp"
}
}
}Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs