mcp-swiss

Instructions

Implementation Reference

• src/modules/avalanche.ts:129-189 (handler)

  The handler function responsible for executing the 'get_avalanche_bulletin' tool. It constructs bulletin URLs and optional region-specific links.

  async function handleGetAvalancheBulletin(args: Record<string, string>): Promise<string> {
    const lang = SUPPORTED_LANGUAGES.includes(args.language) ? args.language : "en";
    const today = todayISO();
  
    // Find matching region if specified
    let matchedRegion: typeof SWISS_AVALANCHE_REGIONS[0] | undefined;
    if (args.region) {
      const query = args.region.trim().toLowerCase();
      matchedRegion = SWISS_AVALANCHE_REGIONS.find(
        (r) =>
          r.id.toLowerCase() === query ||
          r.name.toLowerCase().includes(query) ||
          r.canton.toLowerCase().includes(query)
      );
    }
  
    const pdfUrl = bulletinPdfUrl(lang);
    const mapUrl = whiteRiskUrl(lang);
  
    const result: Record<string, unknown> = {
      date: today,
      source: "SLF – WSL Institute for Snow and Avalanche Research",
      bulletin_url: {
        interactive_map: mapUrl,
        pdf_full: pdfUrl,
        pdf_regions: {
          de: "https://aws.slf.ch/api/bulletin/document/full/de",
          en: "https://aws.slf.ch/api/bulletin/document/full/en",
          fr: "https://aws.slf.ch/api/bulletin/document/full/fr",
          it: "https://aws.slf.ch/api/bulletin/document/full/it",
        },
      },
      danger_scale: DANGER_LEVELS,
      schedule: {
        morning_bulletin: "~08:00 CET/CEST",
        afternoon_update: "~17:00 CET/CEST",
        season: "October to May (daily). Summer bulletins are occasional.",
      },
      note:
        "The SLF JSON API requires authentication (used by the White Risk app). " +
        "Current danger levels are available via the interactive map at whiterisk.ch " +
        "or as PDF bulletins at the URLs above. " +
        "For programmatic access, contact SLF at lawinfo@slf.ch.",
    };
  
    if (matchedRegion) {
      result.region = {
        id: matchedRegion.id,
        name: matchedRegion.name,
        canton: matchedRegion.canton,
        typical_elevation_m: matchedRegion.elevation_m,
        bulletin_link: `${mapUrl}#region=${matchedRegion.id}`,
      };
      result.tip = `Check ${matchedRegion.name} (${matchedRegion.id}) on the interactive map: ${mapUrl}`;
    } else if (args.region) {
      result.region_not_found = args.region;
      result.tip = `Use list_avalanche_regions to see valid region IDs. Or visit ${mapUrl} for the full map.`;
    }
  
    return JSON.stringify(result);
  }

• src/modules/avalanche.ts:86-108 (schema)

  The definition and input schema for the 'get_avalanche_bulletin' tool.

  {
    name: "get_avalanche_bulletin",
    description:
      "Get the current Swiss avalanche danger bulletin from SLF (WSL Institute for Snow and Avalanche Research). " +
      "Returns current bulletin URLs, danger level descriptions, and links to the interactive map. " +
      "The bulletin is published daily at ~08:00 and updated at ~17:00 Swiss time (October–May).",
    inputSchema: {
      type: "object",
      properties: {
        region: {
          type: "string",
          description:
            "Optional region ID (e.g. CH-9 for Central Graubünden) or region name. " +
            "Use list_avalanche_regions to see all options. If omitted, returns national overview.",
        },
        language: {
          type: "string",
          enum: ["de", "en", "fr", "it"],
          description: "Language for bulletin links: de (German), en (English), fr (French), it (Italian). Default: en",
        },
      },
    },
  },

• src/modules/avalanche.ts:224-225 (registration)

  The registration within the main dispatcher where the 'get_avalanche_bulletin' tool is linked to its handler function.

  case "get_avalanche_bulletin":
    return handleGetAvalancheBulletin(args);