Windsurf Buttondown MCP by usefulapi buttondown_list_subscribers
How to: Windsurf Buttondown MCP by usefulapi buttondown_list_subscribers
Add Buttondown MCP by usefulapi to Windsurf
-
01
Open ~/.codeium/windsurf/mcp_config.json and merge this in. Keep any servers already there.
{
"mcpServers": {
"buttondown": {
"serverUrl": "https://buttondown.usefulapi.io/mcp"
}
}
}-
02
Save the file and restart Windsurf.
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03
Ask for something buttondown_list_subscribers does. Windsurf lists the server's tools on connect and calls buttondown_list_subscribers itself — you do not invoke it by name.
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04
If nothing happens, check the server is running and that Buttondown MCP by usefulapi's identifier in your config matches the one above exactly.
Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs
Same tool, other clients
This list was read from the server itself, by connecting to it and calling tools/list on 12 October 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.