"Free Graph and Network Visualization Tools (No API Key Required)" matching MCP servers:

Enables access to MET Norway weather data including global forecasts, Nordic nowcast, sunrise/sunset times, air quality, and ocean forecasts via natural language queries.

Enables natural-language spatial analysis of transmission lines and wildlife/public access lands using Claude, MCP, and DuckDB. Users can ask questions about intersections, distances, buffers, and other GIS operations without writing SQL.

Enables AI agents and MCP clients to connect to a live Esri ArcGIS Utility Network through the UtilityNetworkServer REST API, supporting trace, subnetwork, dirty-area, and association operations.

Enables MCP-capable assistants to control an open ArcGIS Pro project locally over TCP 127.0.0.1, with 68 commands and 167 tools for layers, editing, symbology, layouts, geoprocessing, and arcpy execution.

This MCP server provides accessibility risk assessment for Seoul subway trips, considering wheelchair, stroller, and other mobility constraints. It offers tools to check station facilities, elevator status, and calculates risk scores for routes based on a deterministic engine.

MCP server for Parks on the Air (POTA) providing live activator spots, park details, activator/hunter stats, and scheduled activations through any MCP-compatible AI assistant.

Enables querying current date and time information by city/state/country, geographic coordinates (latitude/longitude), or timezone using the API Ninjas World Time API.

Enables geocoding and reverse geocoding operations to convert city names to coordinates and coordinates to location names using the API Ninjas service.

MCP server providing access to Russian Railways ticket API, enabling train search, station lookup, and trip information.

Enables MCP clients to manage business locations, citations, reviews, posts, and local analytics across dozens of directories, maps, and search engines.

An MCP server providing tools for weather, calculations, currency conversion, timezone queries, and unit conversions.

A local MCP server that integrates FastMCP with OpenAI to enable natural language queries for current weather, forecasts, and currency conversion using ExchangeRate-API and Open-Meteo.

MCP server for the Infobel GetData API, enabling AI agents to search businesses, retrieve records, and browse categories and locations.

Enables MCP-compatible AI clients to look up UK postcode details, find nearest postcodes by coordinates, and retrieve upcoming bank holidays through keyless public APIs.

Provides access to the City By Api Ninjas API to retrieve detailed city information worldwide. Users can search and filter results by name, country, population range, and geographic coordinates.

Enables to retrieve device information, images, media, location, thumbnails, and events from the Safie API through MCP.

Enables AI assistants to ask what aircraft are flying near a location, track a specific flight's live position, route, aircraft details and photo, and surface emergency-squawking or military aircraft. It exposes four tools (flights_near, track_flight, emergencies, military_aircraft) backed by merged volunteer ADS-B networks and a global snapshot.

Alexa+ MCP server that finds a restroom you can actually use

Enables realtime bus arrival queries, route and stop searches, nearby station lookups, and transit planning for Chelaile-supported cities through MCP tools.

Provides 15 geospatial utility tools for AI agents, covering coordinate transformation, spatial data validation, elevation/terrain, viewshed analysis, and drone flight planning.