serverUrl and an X-API-Key header.
You need an API key (format
sk_live_...) to connect. Generate one from
Settings > API Access, or see Authentication.Setup
1
Open MCP settings
Navigate to Cascade > MCP settings (the hammer/plugin icon) in Windsurf, then
choose Manage plugins > View raw config, or edit the config file directly at:
2
Add the configuration
mcp_config.json
Windsurf uses
serverUrl (not url) for remote HTTP MCP servers.3
Refresh / restart Windsurf
Save the file, then click Refresh in the MCP settings panel (or restart Windsurf) for
the changes to take effect.
4
Verify
Cascade now has access to Social media studio tools —
so-me-studio should appear in the MCP
plugins list with its tools. Try asking it to create a post.Troubleshooting
Server not connecting / no tools
Server not connecting / no tools
Confirm you used the
serverUrl field and that the X-API-Key value is an active key
beginning with sk_live_. Click Refresh in the MCP panel after saving.405 Method Not Allowed
405 Method Not Allowed
The Social media studio server runs in stateless Streamable HTTP mode (
POST only). Use
serverUrl as shown — do not configure an SSE endpoint.