MeteoSwiss MCP Server
by eins78 · remote · local (npm) · no sign-in to list tools · v2.0.2 · published by GitHub user eins78
Swiss weather data for AI assistants — forecasts, measurements, stations, pollen.
Read only
7 tools: 7 only read.
Scanned Oct 21, 2026
- Deletes or cancels0Claude Code: deny
- Can't be undone0Claude Code: ask
- Changes things0Claude Code: ask
- Only reads7Claude Code: allow: see these tools
1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.
claude mcp add --transport http meteoswiss https://meteoswiss-mcp.ars.is/mcpFindings
Matches of fixed checks, with the text they matched.
The description is 2,506 characters long, over the 2,000 this check looks for.
What this check looks forMatched text
description ends: "...shown alongside it, so it always matches summing/averaging that series exactly."
Tools
Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.
7 tools
Only reads 7Claude Code: allow
fetchFetch full content from a MeteoSwiss webpage and convert to markdown or plain text.No findings
Why it is in this group
- The name "fetch" says "fetch": a word for reading.
Description, as the server wrote it 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.
meteoswissClimateDataGet homogeneous climate measurement series from Switzerland's National Basic Climatic Network (NBCN).No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it 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.
meteoswissCurrentWeatherGet real-time weather measurements from ~300 Swiss automatic weather stations (~160 full weather + ~140 precipitation-only).No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it 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.
meteoswissLocalForecastGet a multi-day weather forecast for any Swiss location.1 finding
Why it is in this group
- The description's first verb is "get": a word for reading.
Findings
- Info
The description is 2,506 characters long, over the 2,000 this check looks for.
What this check looks forMatched text
description ends: "...shown alongside it, so it always matches summing/averaging that series exactly."
Description, as the server wrote it 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-curated product from the hourly series shown alongside them. They can legitimately NOT match summing/ averaging the hourly entries for that day; this is expected, not a data error. sunshine_total_minutes/wind_avg_kmh/wind_gust_max_kmh have no official daily product for stations and are always derived from the hourly series. For postal codes/mountain points, every summary field is derived from the same hourly series shown alongside it, so it always matches summing/averaging that series exactly.
meteoswissPollenDataGet current pollen concentration data from MeteoSwiss monitoring stations (~15 stations across Switzerland).No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it 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.
meteoswissStationsList and search MeteoSwiss measurement stations.No findings
Why it is in this group
- The description's first verb is "list": a word for reading.
Description, as the server wrote it 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.
searchSearch MeteoSwiss website content in multiple languages (DE, FR, IT, EN).No findings
Why it is in this group
- The name "search" says "search": a word for reading.
Description, as the server wrote it 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).
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Install
Pinned to version 2.0.2. Values in angle brackets are yours to fill in.
claude mcp add --transport http meteoswiss https://meteoswiss-mcp.ars.is/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__meteoswiss__search",
"mcp__meteoswiss__fetch",
"mcp__meteoswiss__meteoswissLocalForecast",
"mcp__meteoswiss__meteoswissCurrentWeather",
"mcp__meteoswiss__meteoswissStations",
"mcp__meteoswiss__meteoswissPollenData",
"mcp__meteoswiss__meteoswissClimateData"
],
"ask": [],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as meteoswiss. Review it before you use it.