# MeteoSwiss MCP Server (remote · meteoswiss-mcp.ars.is) Swiss weather data for AI assistants — forecasts, measurements, stations, pollen. - Trust score: 67/100 (medium) - Change this week: +3 - Registry status: active - Liveness: live - Owner verified: no - Last scored: 2026-08-03 ## Components - remote · `meteoswiss-mcp.ars.is`: 67/100 (this document), [markdown](https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp.md), [page](https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp) - npm · `meteoswiss-mcp`: 43/100, [markdown](https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp-2.md), [page](https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp-2) ## Channel facts - Endpoint: `https://meteoswiss-mcp.ars.is/mcp` - Transports: `streamable-http` - Auth: `none` - Version: `2.0.2` ## Trust breakdown 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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog) Scored 2026-08-03. - **Endpoint Security**: 57/100 - The endpoint's TLS certificate is valid, in date, and uses a strong key. - Authorisation not fully verified: no authorisation is required to call this server, and 7 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. - HTTPS is enforced; there's no plaintext access path. - HSTS check failed: the Strict-Transport-Security header is absent. - DNSSEC check failed: this domain isn't protected by DNSSEC. - **Transport & Reachability**: 100/100 - Verified streamable-http transport via a live MCP handshake. - **Schema Quality & AI Usability**: 75/100 - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name). - AI-judged instruction clarity (excellent). - 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. - Usage-examples check failed: none of the tools include examples. - **Stability & Change Management**: 27/100 - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses. - **Tool Coverage**: 100/100 - 100% of tools have a non-trivial description (not blank, and not just the tool's name). - 100% of tool parameters carry a description. - Structured output schemas are declared (100% of tools); any adoption earns full credit. - **Capabilities**: 100/100 - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28. ## Install ### Claude ```bash claude mcp add --transport http eins78-meteoswiss-mcp https://meteoswiss-mcp.ars.is/mcp ``` ### Codex ```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 } } } ``` ### OpenClaw ```bash openclaw mcp add eins78-meteoswiss-mcp --url https://meteoswiss-mcp.ars.is/mcp --transport streamable-http ``` ### Hermes ```yaml mcp_servers: eins78-meteoswiss-mcp: url: "https://meteoswiss-mcp.ars.is/mcp" ``` ### Other ```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 recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims. ### 2026-08-03 (score 67, +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. ### 2026-08-01 (score 66, +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. ### 2026-07-31 (score 65, −1) - [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server ### 2026-07-30 (score 66, +1) - [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server ### 2026-07-29 (score 65, +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. ### 2026-07-27 (score 64, +1) - [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server ### 2026-07-26 (score 63) First indexed and scored. ## MCP tools (7) ### `search` (~193 tokens) 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). Input parameters: - `contentType` (string): Filter by content type. Defaults to "content" to exclude application pages. Use "publication" for official reports. - `language` (string): The language for search results - `page` (integer): Page number for pagination (1-based). The upstream API always returns 10 results per page; page size is not configurable. - `query` (string, required): The search query string - `sort` (string): Sort order for results. Note: date-asc severely degrades relevance — results are dominated by page age rather than query match. Output parameters: - `page` (number): Current page number (1-based) - `pageSize` (number): Number of items in `results` for this page — at most 10 (the upstream API pages by a fixed 10), fewer on the last page - `results` (array): Result items for this page - `totalResults` (number): Total number of matches across all pages ### `fetch` (~133 tokens) 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. Input parameters: - `format` (string): The output format for the content - `id` (string, required): Identifier 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 - `includeMetadata` (boolean): Whether to include metadata in the response Output parameters: - `format` (string): Format of `text` - `id` (string): The id the content was fetched for (the page URL) - `metadata` (object): Page metadata (present when includeMetadata is true) - `text` (string): Canonical body field (matches ChatGPT Deep Research spec) - `title` (string): Page title - `url` (string): Canonical URL field (matches ChatGPT Deep Research spec). For this server `url === id`. ### `meteoswissLocalForecast` (~674 tokens) 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… Input parameters: - `days` (integer): Number of forecast days (1-9, default 5) - `location` (string, required): Swiss location: postal code (e.g., "8001"), station abbreviation (e.g., "SMA"), or place name (e.g., "Zurich") Output parameters: - `forecast` (array): One entry per forecast day, in date order - `generated` (string): Timestamp the forecast was generated (ISO 8601) - `location` (object) - `source` (string): Data attribution ### `meteoswissCurrentWeather` (~235 tokens) 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. Input parameters: - `coordinates` (object): WGS84 coordinates (alternative to station name) - `station` (string): Swiss 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`… Output parameters: - `measurements` (object): Each measurement is present only when the station reports it - `source` (string): Data attribution - `station` (object) - `timestamp` (string): Measurement timestamp (ISO 8601) - `visual_observations` (object): Visual observations (only for 8 OBS stations: ALT, BAS, CHU, GSB, JUN, SAE, SIO, SMA) ### `meteoswissStations` (~102 tokens) 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. Input parameters: - `canton` (string): Filter by canton abbreviation (e.g., "ZH", "BE", "GR") - `limit` (integer): Maximum number of results (1-200, default 20) - `search` (string): Search by station name or abbreviation Output parameters: - `source` (string): Data attribution - `stations` (array): Matching stations, up to `limit` - `total` (number): Total number of stations matching the filter ### `meteoswissPollenData` (~135 tokens) 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. Input parameters: - `station` (string): Pollen monitoring station name or abbreviation. Omit for an overview of all stations. Output parameters: - `source` (string): Data attribution - `stations` (array): One entry per pollen station ### `meteoswissClimateData` (~314 tokens) 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. Input parameters: - `coordinates` (object): WGS84 coordinates (alternative to station name) - `end_date` (string): End date filter (YYYY-MM-DD). Only rows on or before this date are returned. - `limit` (integer): Maximum number of data rows to return (default 30) - `resolution` (string): Data resolution: daily (temp min/max/mean), monthly (full climate summary), yearly (annual summary) - `start_date` (string): Start date filter (YYYY-MM-DD). Only rows on or after this date are returned. - `station` (string): Climate 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… Output parameters: - `data` (array): Measurement rows, filtered and limited as requested - `note` (string): Present 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… - `resolution` (string): Resolution the returned rows are in - `source` (string): Data attribution - `station` (object) ## Diagnostics Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp#diagnostics ## Score history - 2026-08-03: 67 - 2026-08-02: 66 - 2026-08-01: 66 - 2026-07-31: 65 - 2026-07-30: 66 - 2026-07-29: 65 - 2026-07-28: 64 - 2026-07-27: 64 - 2026-07-26: 63 ## Links - Remote endpoint: https://meteoswiss-mcp.ars.is/mcp - Repository: https://github.com/eins78/meteoswiss-llm-tools - Changelog RSS feed: https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp/changelog.xml - Changelog JSON feed: https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp/changelog.json - HTML version of this page: https://verifymcp.io/servers/eins78-meteoswiss-mcp/meteoswiss-mcp