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WeatherMCP serverFirst audited Nov 13, 2026

ViaFrei

The German Real-Time Mobility Context Platform for AI: traffic, trains, charging, parking, weather.The vendor's description, from its MCP Registry listing.

Passed public checksAudited Nov 13, 2026

Every public check ran and passed. Public audit: we connect as an AI client would, list the tools and check what they say. We do not run them. How we audit

Does it work?
YesConnected in 534 ms.
Sign-up?
None neededIt answered without any account or key.
Can it change things?
YesSome tools say they can change things. Your AI client should ask you first.
Endpointhttps://mcp.viafrei.de/mcp

Source code Website Streamable HTTP · protocol 2025-11-25 · server version 2.6.14

What we checked, the evidence, and the tools it offers.

What we checked

Security

  • Passed: Connections are encrypted (HTTPS).

  • Passed: No hidden instructions found in tool text.

Safety labels

  • Note: 2 tools are labelled as able to change things.

    Expected for tools that send, write or buy. Your AI client should ask before calling them.

    • watch_situation
    • stop_watch
  • Passed: Every tool says whether it only reads or can change things.

Tools

  • Passed: 24 tools listed.

  • Passed: Every tool describes its inputs with a valid schema.

Protocol

  • Passed: The MCP handshake works (Streamable HTTP).

  • Passed: Protocol version 2025-11-25 (latest).

  • Passed: Unknown requests are refused.

Connection

  • Passed: The server responds.

Tools (24)

As the server describes them. The labels are the server's own: it says whether each tool only reads or can change things.

  • check_autobahn_trafficPer motorway (≤ 5), or one Bundesland's motorways with land: an Ampel, then jams, closures, roadworks in force, with place/delay/speed/map. Use when asked about a named motorway now: frei/clear (Ampe…Read-only
  • find_cheapest_fuelReturns the cheapest stations for one fuel grade near a place or coordinate: price per litre, brand, address, distance, open state. Use when the user asks where to fill up or what fuel costs. Do NOT…Read-only
  • find_fuel_stationFinds filling stations around a place or coordinate under any combination of filters — grade, brand, name, open now, open at a time you name, open 24 h — sorted by distance, price or name. Use when t…Read-only
  • find_parkingParking near a place, a coordinate or along one motorway: lorry parks, car parks, P+R and disabled-badge bays, with total spaces, stated amenities (WC, shower) and published free spaces. Use when ask…Read-only
  • check_road_statusIf a motorway/B/Land road (NI, NW, HE, BW, MV, SN, TH; B also SH, BY, BE; pass Land/town as place) is open/closed/restricted now/soon; by place, jams, city/Land messages, Hamburg traffic cameras; lor…Read-only
  • find_roadworks_aheadReturns roadworks PLANNED on one motorway, one Bundes-/Landesstraße in NI, NW, HE, BW, MV, SN or TH (BY: B only), or city streets by place, in a date window: where, impact, dates, map links. Use when…Read-only
  • find_charging_stationReturns EV charging sites near a place or coordinate: operator, plugs, max power, price per kWh where published, and points free now where live status is published. Filters: plug, power (min/max kW),…Read-only
  • find_hydrogen_stationReturns hydrogen (H2) filling stations near a place or coordinate, nearest first, with operator, address, pumps (700 bar car, 350 bar truck/bus), opening hours where published and the age of the reco…Read-only
  • find_speed_camerasA town's published speed-enforcement locations (fixed, red-light, section control, announced mobile checks, measuring sites) by kind and street plus OpenStreetMap's fixed cameras. § 23 Abs. 1c StVO b…Read-only
  • find_placeLooks up a place name and returns every match, each with its kind, population, English name and coordinate; the official key (AGS/RS) only in the structured result. Use when the person asks where som…Read-only
  • find_poiFinds a business or landmark by name or kind — company, shop, clinic, hotel, hostel — with address, category and coordinate. Use when the person names a THING rather than a town: "the adesso office i…Read-only
  • find_addressLooks up a street address: its coordinate, and the named OpenStreetMap objects at it (company, shop, office) or that none are. Use when the person gives a STREET AND NUMBER — "Bahnhofstraße 12, Fulda…Read-only
  • describe_locationTurns a coordinate into words: the nearest address, settlement and motorway junction with their distances, and the Gemeinde, Kreis and Land the point lies in; also any low-emission zone. Use when you…Read-only
  • find_nearbyOverview of what is around a place or coordinate: fuel, EV charging, parking, nearest railway station and motorway junction, with distances; everyday places (shop, pharmacy, cash, food, hotel, worksh…Read-only
  • find_sharingReturns rentable shared bikes near a place or coordinate: bike-sharing stations with bikes and free docks now, and free-floating bikes around, with distance and data age (nextbike incl. KVB Rad, MyRa…Read-only
  • get_driving_rulesReturns the German road rules a visitor needs: low-emission zones (Umweltzone) and the Feinstaubplakette, speed limits (advisory 130), winter tyres, alcohol, the Sunday lorry ban, tolls, Rettungsgass…Read-only
  • check_transit_disruptionPublic-transport punctuality now in a German region: share of trips >5 min late, skipped stops, cancellations, trend, alerts in force. Use when asked if buses and trains run normally, a strike, storm…Read-only
  • check_weather_warningsReturns the official DWD weather warnings in force for a place — storm, snow, ice, heavy rain, thunderstorm, heat — with Warnstufe 1–4, area, validity and the official text unaltered. At a town or co…Read-only
  • get_train_departuresNext trains at a German railway station: platform, delay, cancellations. Use when asked when a train, S-Bahn or ICE leaves a named station, or if a train or line from it is late; later today ("heute…Read-only
  • get_departuresScheduled departures from any German stop — bus, tram, U-/S-Bahn, train, ferry — or the nearest stops around a place ("Abfahrten in der Nähe"). Use when asked when a bus, tram, U-/Stadtbahn or ferry…Read-only
  • check_station_facilitiesWhether the lifts and escalators of a railway station or Köln Stadtbahn stop work now: each with place, state, reason. Another tram, U-Bahn or bus stop (named with its city: "Stuttgart Charlottenplat…Read-only
  • describe_stationOne German railway station as its viafrei.de page shows it: address, step-free platforms now, lifts and escalators (out of service first), platforms, the next departures with live delays, service ale…Read-only
  • watch_situationOpens a watch so THIS conversation is told when something changes: a road closed or restricted, a motorway jam, a stop running late, a weather warning, a charger freeing up. Use when asked to be told…Can change things
  • stop_watchEnds a watch this conversation opened with watch_situation, so no further notifications arrive for it. Use when the person no longer needs to be told — "du musst mir nichts mehr zur A8 sagen", "stop…Can change things

Audit history

  1. Nov 13Passed

What we sent

Every request in this audit, with the answer and how long it took. We never send credentials and never call a tool.

RequestAnswerTime
initializeHTTP 200534 ms
initializedHTTP 202492 ms
tools/listHTTP 200357 ms
resources/listHTTP 200159 ms
prompts/listHTTP 200139 ms
unknown-methodHTTP 200143 ms

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