"Free servers available for testing purposes" matching MCP servers:

An MCP server that provides real-time weather data, hourly forecasts, and daily summaries using the free Open-Meteo API with no API key required. It enables users to search for weather conditions by specific coordinates or city names across multiple measurement units.

Enables keyless, read-only access to a wide range of public APIs (including weather, elevation, Japanese addresses, environment, science, and civic data) through MCP clients, with usage limits and abuse protection built in.

A customizable Model Context Protocol server implementation that enables AI models to interact with external tools including weather queries, Google search, and camera control functionality.

Enables querying and comparing operational numerical weather models, including global and regional, deterministic and ensemble, physics-based and AI forecasts, with a unified API.

An MCP server that provides weather alerts and forecasts, system shutdown/restart, smart browser search, and screenshot capture.

Enables querying current weather conditions and 1–7 day forecasts by place name through natural language, using Open-Meteo without requiring an API key.

A simple MCP server that provides weather tools, deployable with Docker, and designed to be used with Claude Desktop via a WSL bridge.

A production-ready MCP server that provides real-time weather information, forecasts, air quality, and weather alerts through the OpenWeatherMap API. It integrates with Claude Desktop and other MCP-compatible clients for natural language weather queries.

Provides current weather information and forecasts for major cities through MCP tools and resources. Supports getting weather data, multi-day forecasts, and listing available cities with mock data for demonstration purposes.

Integrates weather tools with Intercom, providing real-time weather alerts, forecasts, and personalized customer greetings using National Weather Service API data.

Provides real-time air quality data (US AQI, PM2.5, PM10, ozone, NO2, SO2, CO) for any city via natural language, using free Open-Meteo data and a single tool.

An MCP server that provides weather forecasts and current conditions for any city via the free Open-Meteo API, with no API key or account required.

MCP server providing Polymarket weather-market bucket-transition signals for AI agents, with free city/signal inspection tools and paid signal bundles via USDC on Base using x402.

Radar-verified storm intelligence for the continental US — NOAA MRMS hail and wind swaths, per-address storm history, affected-property reports, area monitors with webhook + email alerts, and swath map images. Boots keyless; free API key (100 credits) at swathapi.com.

Wraps a climate data-processing pipeline so agents can inspect the config schema and available sample CSVs, validate an inline JSON config, and run the pipeline to return a monthly summary table plus a rendered plot, with file access sandboxed to the data and outputs directories.

A free, MIT-licensed MCP server that provides AI agents with analyst-grade US severe-weather tools, including live warning polygons, SPC outlooks, radar-derived hail and rotation products, and a composite threat brief.

Per-species pollen forecasts at any point on Earth, seven days ahead. Free tier covers casual use.

Enables AI agents to access live aviation data including METAR weather, airport information, aircraft specs, an aviation glossary, and FAA-style practice questions via the free Rotate Pilot API.

Free travel utilities plus live x402 travel itelligence: $0.01 Travel Pulse disruption and emergency-awareness checks, day trips, weekend getaways, creator experiences, weather-aware planning, mobility options, currency conversion, airport checks, and timing guidance.

Live scuba diving planning for AI agents — ranked dive-forecast windows near any place for any day, best-time climatology per destination, marine-life seasonality from GBIF sightings, and facts for 4,800+ dive sites. Free and read-only; hosted at https://pickadive.com/mcp.

Provides farm and land decision support tools (irrigation advice, frost risk, growing degree days, dry spell status) using free public weather and soil data, without requiring any API keys.

Provides hourly and daily weather forecasts using the free Open-Meteo API without requiring an API key.

MCP server for agriculture and farming data. 8 tools: soil conditions (temperature, moisture), crop weather forecasts, historical climate data (NASA POWER, since 1981), global agriculture statistics (World Bank, 20+ indicators), and food product database (Open Food Facts, 3M+ products). All APIs free, no keys required.

Enables access to 11 free public APIs including weather, country info, NASA data, dictionary, and more, with zero configuration and no API keys required.

Travel planning tools from Plantrip: generate day-by-day itineraries, AI packing lists, weather insights, and trip cost estimates. Every itinerary gets a shareable page the user owns; free API key, no subscription.

A free Model Context Protocol server that retrieves global weather data and forecasts via the Open-Meteo API, with Sydney set as the default location.

A demonstration MCP server that provides example tools for weather queries, time retrieval, and request handling, along with advice prompts. Supports both HTTP and stdio modes for testing MCP client integrations.

A Node.js and TypeScript server project that provides a simple starter example with Express.js web server, supporting hot-reload, testing, and modular structure.

A Model Context Protocol server that provides current weather forecasts for specific locations and active weather alerts for US states.

Provides weather information for the United States through the Model Context Protocol. Enables users to query current weather conditions and forecasts for US locations.