Site must be slammed - but I'm interested bc I'm working on a similar thing. But my project (one aspect at least) is for expressing HTTP calls as MCP tools.

The format looks like this:

  ---
  [add-list-item] Add a new item to a list.
  # Adjust the fields object to match your list's actual columns.

  $fields is object
  POST https://graph.microsoft.com/v1.0/sites/$site_id/lists/$list_id/items
  Authorization: Bearer $token
  Content-Type: application/json
  {
    "fields": $fields
  }

  HTTP 201

Been having a lot of fun with this, as I can pile up these integrations and make detailed MCPs quickly.