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MeteoSwiss MCP Server

REMOTE · METEOSWISS-MCP.ARS.IS · 2 COMPONENTS · SCANNED AUG 3

Swiss weather data for AI assistants — forecasts, measurements, stations, pollen.

+3 this week 67 Trust /100
Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score →

Endpoint Security57
Transport & Reachability100
Schema Quality & AI Usability75
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 1786 tokens (~255/item across 7 items; 7 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management27
  • Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
  • Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

remote · meteoswiss-mcp.ars.is

# add to Claude Code
claude mcp add --transport http eins78-meteoswiss-mcp https://meteoswiss-mcp.ars.is/mcp
# ~/.codex/config.toml
[mcp_servers.eins78-meteoswiss-mcp]
url = "https://meteoswiss-mcp.ars.is/mcp"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "eins78-meteoswiss-mcp": {
      "type": "remote",
      "url": "https://meteoswiss-mcp.ars.is/mcp",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add eins78-meteoswiss-mcp --url https://meteoswiss-mcp.ars.is/mcp --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  eins78-meteoswiss-mcp:
    url: "https://meteoswiss-mcp.ars.is/mcp"
// mcp.json
{
  "mcpServers": {
    "eins78-meteoswiss-mcp": {
      "type": "http",
      "url": "https://meteoswiss-mcp.ars.is/mcp"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 3 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

  • 1 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

  • 31 Jul 26 −1
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 30 Jul 26 +1
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 29 Jul 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

  • 27 Jul 26 +1
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 26 Jul 26 63

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Probed https://meteoswiss-mcp.ars.is/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=meteoswiss-mcp.ars.is CN=YE1,O=Let's Encrypt,C=US 26 Jul 2026 24 Oct 2026 ECDSA 256 ECDSA-SHA384 52cea80b42360f9376f08ffef89474eabbd
SANs: meteoswiss-mcp.ars.is
CN=YE1,O=Let's Encrypt,C=US (CA) CN=Root YE,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 ECDSA 384 ECDSA-SHA384 5ddd70dd31f801c85c186a7a04b80afe
CN=Root YE,O=ISRG,C=US (CA) CN=ISRG Root X2,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 ECDSA-SHA384 872165fc34b6e5fba8add5b3705fb53a
CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) CN=ISRG Root X1,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 SHA256-RSA 6c8f1dc727c7117f7baf853ac980f9cd
DNSSEC insecure

Validation of meteoswiss-mcp.ars.is. Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
is. present 46824 13 Verified
ars.is. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://meteoswiss-mcp.ars.is/mcp Verified 200
http (plaintext) http://meteoswiss-mcp.ars.is/mcp HTTPS enforced 308 https://meteoswiss-mcp.ars.is/mcp
MCP tools — 7 exposed · ~1,786 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens
fetch ~133

Fetch full content from a MeteoSwiss webpage and convert to markdown or plain text. Use the search tool first to discover valid page URLs, then pass the full URL as the id parameter.

NameTypeReqDescription
formatstringThe output format for the content
idstringyesIdentifier of a MeteoSwiss page to fetch. For this server the id is a full URL returned by the search tool. Example: https://www.meteoschweiz.admin.ch/klima/klimawandel/steigende-temperaturen.html
includeMetadatabooleanWhether to include metadata in the response
NameTypeReqDescription
formatstringyesFormat of `text`
idstringyesThe id the content was fetched for (the page URL)
metadataobjectPage metadata (present when includeMetadata is true)
textstringyesCanonical body field (matches ChatGPT Deep Research spec)
titlestringPage title
urlstringyesCanonical URL field (matches ChatGPT Deep Research spec). For this server `url === id`.

No examples provided.

meteoswissClimateData ~314

Get homogeneous climate measurement series from Switzerland's National Basic Climatic Network (NBCN). Returns temperature, precipitation, sunshine, radiation, wind, pressure, and climate indicators (frost days, summer days, heat days) going back decades. 29 climate stations + 46 precipitation stations with daily, monthly, and yearly resolution. Use cases: "What are typical January temperatures in Zurich?", "How has precipitation changed in Basel over 50 years?", "How many heat days did Lugano have last year?" Accepts station names ("Zurich", "Basel"), abbreviations ("SMA", "BAS"), or WGS84 coordinates.

NameTypeReqDescription
coordinatesobjectWGS84 coordinates (alternative to station name)
end_datestringEnd date filter (YYYY-MM-DD). Only rows on or before this date are returned.
limitintegerMaximum number of data rows to return (default 30)
resolutionstringData resolution: daily (temp min/max/mean), monthly (full climate summary), yearly (annual summary)
start_datestringStart date filter (YYYY-MM-DD). Only rows on or after this date are returned.
stationstringClimate station name or abbreviation (e.g., "Zurich", "BAS", "Davos"). Part of the National Basic Climatic Network (29 climate + 46 precipitation stations). Provide either this or `coordinates`; if b…
NameTypeReqDescription
dataarrayyesMeasurement rows, filtered and limited as requested
notestringPresent only when `data` is empty because the requested date range fell outside the fetched series (e.g. a daily request older than the ~2-year `_recent` window). Explains why and suggests a fallback…
resolutionstringyesResolution the returned rows are in
sourcestringyesData attribution
stationobjectyes

No examples provided.

meteoswissCurrentWeather ~235

Get real-time weather measurements from ~300 Swiss automatic weather stations (~160 full weather + ~140 precipitation-only). Returns temperature, precipitation, wind, humidity, pressure, sunshine, and more. Data updates every 10 minutes. Precipitation-only stations return only rainfall data. For 8 stations (Zurich, Basel, Chur, Sion, Altdorf, Säntis, Jungfraujoch, Grand St-Bernard), also includes daily visual observations: cloud cover, fog, rain, snowfall, hail, and snow coverage. Accepts station names ("Zurich"), abbreviations ("SMA"), addresses ("Bahnhofplatz 1 Bern"), or WGS84 coordinates. Automatically finds the nearest station.

NameTypeReqDescription
coordinatesobjectWGS84 coordinates (alternative to station name)
stationstringSwiss weather station or location: name (e.g., "Zurich"), abbreviation (e.g., "SMA"), or address (e.g., "Bahnhofplatz 1 Bern"). Provide either this or `coordinates`; if both are given, `coordinates`…
NameTypeReqDescription
measurementsobjectyesEach measurement is present only when the station reports it
sourcestringyesData attribution
stationobjectyes
timestampstringyesMeasurement timestamp (ISO 8601)
visual_observationsobjectVisual observations (only for 8 OBS stations: ALT, BAS, CHU, GSB, JUN, SAE, SIO, SMA)

No examples provided.

meteoswissLocalForecast ~674

Get a multi-day weather forecast for any Swiss location. Returns daily summaries (temperature, precipitation, sunshine, wind, weather icon) plus a hierarchical hourly breakdown of every series. This uses official MeteoSwiss Open Data — the same forecasts powering the MeteoSwiss app and website. Accepts: - Postal codes: "8001" (Zurich), "3000" (Bern), "1200" (Geneva) - Station abbreviations: "SMA" (Zurich Fluntern), "BER" (Bern) - Place names: "Zurich", "Basel", "Lugano" Coverage: ~6000 Swiss locations (all postal codes + weather stations + mountain points). Forecast horizon: up to 9 days. Updated hourly. Each day's summary fields: temperature_min_c, temperature_max_c, precipitation_total_mm, sunshine_total_minutes, wind_avg_kmh, wind_gust_max_kmh, weather, weather_icon_url. Each day also includes "hourly": one array of per-hour objects covering every series together — { time, temperature_c, precip_mm, sunshine_minutes, wind_kmh, wind_gust_kmh } — useful for judging *when* rain, sun, or wind is expected, not just the daily summary: - Each entry's "time" is already local wall-clock time for the location (Europe/Zurich), with the UTC offset included, e.g. "2026-07-09T14:00:00+02:00". It is NOT UTC — do not convert it. - A dry/calm/sunless hour is reported as its measured value (often 0), not omitted. A fully dry day is still a full array of zero-precipitation hours, not an empty array. - Each field is independently null if just THAT series has no reading for a given hour — the other fields for that same hour are still populated. An hour is omitted entirely only when every series is missing for it. - "hourly" itself is null when no hourly breakdown exists for this location at all (a total data gap); [] only when this location supports hourly data but none was available for that specific day. - For weather stations, temperature_min_c/temperature_max_c/precipitation_total_mm are MeteoSwiss's own official daily aggregates — a different, separately-cur…

NameTypeReqDescription
daysintegerNumber of forecast days (1-9, default 5)
locationstringyesSwiss location: postal code (e.g., "8001"), station abbreviation (e.g., "SMA"), or place name (e.g., "Zurich")
NameTypeReqDescription
forecastarrayyesOne entry per forecast day, in date order
generatedstringyesTimestamp the forecast was generated (ISO 8601)
locationobjectyes
sourcestringyesData attribution

No examples provided.

meteoswissPollenData ~135

Get current pollen concentration data from MeteoSwiss monitoring stations (~15 stations across Switzerland). Shows pollen levels for 7 measured species (alder, birch, hazel, beech, ash, oak, grasses) — each is always included, with a "no-current-data" status when out of season. Ambrosia (ragweed) is a MeteoSwiss forecast-only category and is not part of this OGD measurement network, so it is not included. Useful for allergy sufferers.

NameTypeReqDescription
stationstringPollen monitoring station name or abbreviation. Omit for an overview of all stations.
NameTypeReqDescription
sourcestringyesData attribution
stationsarrayyesOne entry per pollen station

No examples provided.

meteoswissStations ~102

List and search MeteoSwiss measurement stations. Filter by name, canton, or browse the full network of ~300 stations (~160 full weather + ~140 precipitation-only) across Switzerland.

NameTypeReqDescription
cantonstringFilter by canton abbreviation (e.g., "ZH", "BE", "GR")
limitintegerMaximum number of results (1-200, default 20)
searchstringSearch by station name or abbreviation
NameTypeReqDescription
sourcestringyesData attribution
stationsarrayyesMatching stations, up to `limit`
totalnumberyesTotal number of stations matching the filter

No examples provided.

search ~193

Search MeteoSwiss website content in multiple languages (DE, FR, IT, EN). Returns relevant pages with URLs that can be passed to the fetch tool. Always returns up to 10 results per page — the upstream API has a fixed page size that cannot be changed. Note: pagination may return duplicate results across pages (upstream API limitation).

NameTypeReqDescription
contentTypestringFilter by content type. Defaults to "content" to exclude application pages. Use "publication" for official reports.
languagestringThe language for search results
pageintegerPage number for pagination (1-based). The upstream API always returns 10 results per page; page size is not configurable.
querystringyesThe search query string
sortstringSort order for results. Note: date-asc severely degrades relevance — results are dominated by page age rather than query match.
NameTypeReqDescription
pagenumberyesCurrent page number (1-based)
pageSizenumberyesNumber of items in `results` for this page — at most 10 (the upstream API pages by a fixed 10), fewer on the last page
resultsarrayyesResult items for this page
totalResultsnumberyesTotal number of matches across all pages

No examples provided.