"Persistent" matching MCP servers:

Provides AI clients with real-time tools for math evaluation, timezone-aware time lookup, live weather retrieval, and persistent note management, all accessible over the Model Context Protocol via stdio.

Enables AI to read live weather data and manage a persistent to-do list through MCP tools, demonstrating both read and write capabilities without API keys.

Combines National Weather Service alerts and forecasts with modern USGS water data, enabling weather and hydrology queries through MCP. No API key required, with persistent local caching.

Enables users to manage persistent notes, retrieve current weather by location, and generate study paths with interactive completion checklists through exposed tools.

Enables intelligent travel planning by combining weather forecasts and route calculations for destinations. Provides personalized travel recommendations based on weather conditions and supports trip planning with persistent conversation memory.