"Services or tools available for free without requiring an API key" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Agent-first onboarding to Smarter Weather: plans, docs, signup, API keys, MCP config, billing.
Location & routing intelligence for AI agents — geocoding, truck routing, traffic, weather, and place search.
Read any page or file as clean text, plus live news, weather, market holidays and timezone lookups for agents. Pay-per-call in USDC on Base via x402 — no signup, no API keys.
20 live tools for KAZM 106.5 FM & 780 AM in Sedona, AZ — now playing, song requests, weather, fire restrictions, road conditions, concerts, emergency alerts, local news, air quality, and more. Streamable HTTP, no auth required.
Mediterranean marine, nautical, sailing: forecasts, tides, sea routes, anchorages, POIs for AI.
Sailing passage planner for any coast, with high-precision tides on the French Atlantic.
Swiss weather data for AI assistants — forecasts, measurements, stations, pollen.
News, web search, mail, markets, weather, places, files, calendar, contacts. 67 tools, one endpoint.
Snow forecasts, lift status, season history, costs and AI ski trip planning for Europe
Visual Crossing Weather MCP — wraps the Visual Crossing Weather Timeline API
Keyless open data for 84 German cities: 12 lean read-only MCP tools covering 67 data types.
One public fact when you have no API key: where, what time, what rate. 31 lookups.
Marine MCP — wraps marine-api.open-meteo.com (free, no auth)
EPA AirNow MCP — official US real-time AQI + forecast (free key)
OpenWeather MCP — wraps the OpenWeatherMap API (openweathermap.org)
NOAA and ECMWF weather forecast MCP for discovery, validation, and GribStream OAuth queries.
MCP server for weather with reasoning — umbrella advice, outdoor checks, city comparisons.
Tomorrow.io MCP — wraps the Tomorrow.io Weather API (api.tomorrow.io/v4)
44 tools for AI agents: Trends, SERP, SEO audits, screenshots, weather, FX, whois, RSS.
Sunrise-Sunset MCP — wraps the sunrisesunset.io API (free, no auth)
