generated: '2026-07-11' method: derived source: openapi/microsoft-power-pages-openapi.yml summary: types: - apiKey api_key_in: - cookie schemes: - name: portalSession type: apiKey in: cookie parameter: .AspNet.ApplicationCookie description: Power Pages uses the host portal's authenticated session for the signed-in (or anonymous) user. A CSRF token must also be supplied via the `__RequestVerificationToken` request header for non-GET requests. sources: - openapi/microsoft-power-pages-openapi.yml