Detect the riksdag-regering degraded-kalender sentinel payload.
When the upstream data.riksdagen.se/kalender/ endpoint serves an HTML error page instead of JSON, the MCP server does not surface a JSON-RPC error — it returns a successful tool result whose inner content is a sentinel envelope such as:
{ "count": 0, "events": [], "rawHtml": "<script…", "error": "Riksdagens kalender-API returnerade HTML istället för JSON.", "notice": "API:et fungerar inte korrekt för närvarande.", "suggestions": [ … ] }
The empty events: [] array would otherwise be read as a legitimate zero-event window, masking the outage and suppressing the web-scraper fallback. Treat the presence of a non-empty error string or a rawHtml field as a degraded signal so the orchestrator falls straight back to the public-page scraper.
Detect the riksdag-regering degraded-kalender sentinel payload.
When the upstream
data.riksdagen.se/kalender/endpoint serves an HTML error page instead of JSON, the MCP server does not surface a JSON-RPC error — it returns a successful tool result whose inner content is a sentinel envelope such as:The empty
events: []array would otherwise be read as a legitimate zero-event window, masking the outage and suppressing the web-scraper fallback. Treat the presence of a non-emptyerrorstring or arawHtmlfield as a degraded signal so the orchestrator falls straight back to the public-page scraper.