A hosted Streamable HTTP MCP server at mcp.projecthollow.com. Connect with your own Hollow API key to work with your account's data. Check the access details below before connecting a client.
One public HTTPS endpoint, with every request carrying your own Hollow API key as a bearer token.
{
"mcpServers": {
"hollow": {
"url": "https://mcp.projecthollow.com",
"headers": { "Authorization": "Bearer hlw_sk_..." }
}
}
}Mint the key under Settings, Developer Keys.
Identity comes from your API key, with successful checks cached for up to 30 seconds. Tools enforce their declared scopes. The current Calendar and Workbooks tools require a valid key but do not yet enforce product scopes, so narrowing a key does not exclude those tools.
search.querynotebooks.*, folders.*, notes.*tasks.list, tasks.createcalendar.query, calendar.createworkbooks.readcascade.listmonitoring.statuscanvas.create, read, update, list, rename, move, archive, unarchiveecho