https://stack.observer 2026-04-11T01:20:56.707Z always 1.0 https://stack.observer/mcp-a-la-carte 2026-02-19T04:34:20.434Z daily 0.8 https://stack.observer/archive 2026-04-11T01:20:56.707Z daily 0.5 https://stack.observer/recommendations 2026-04-11T01:20:56.707Z weekly 0.4