mcp-nordic

Instructions

Implementation Reference

• src/servers/danish-addresses.js:154-171 (handler)

  Handler logic for dk_nearby_addresses, which fetches data from the DAWA API and formats the result.

    async ({ latitude, longitude, radius_meters, limit }) => {
      try {
        const data = await dawaFetch("/adgangsadresser", {
          cirkel: `${longitude},${latitude},${radius_meters || 200}`,
          struktur: "mini",
          per_side: limit || 10,
        });
        if (!data.length) return { content: [{ type: "text", text: "No addresses found within radius." }] };
        const lines = data.map((a, i) => {
          const dist = haversine(latitude, longitude, a.y, a.x);
          return `${i + 1}. **${a.betegnelse}** (${dist}m away)\n   ${a.y.toFixed(6)}°N, ${a.x.toFixed(6)}°E`;
        });
        return { content: [{ type: "text", text: `## Addresses within ${radius_meters || 200}m\n\n${lines.join("\n")}` }] };
      } catch (err) {
        return { content: [{ type: "text", text: `Error: ${err.message}` }], isError: true };
      }
    }
  );

• src/servers/danish-addresses.js:145-153 (registration)

  Registration of the dk_nearby_addresses tool with its schema definition using Zod.

  server.tool(
    "dk_nearby_addresses",
    "Find addresses within a radius of a coordinate. Useful for exploring an area or finding what's around a location.",
    {
      latitude: z.number().min(54).max(58).describe("Center latitude"),
      longitude: z.number().min(7).max(16).describe("Center longitude"),
      radius_meters: z.number().min(1).max(5000).optional().describe("Search radius in meters (default 200, max 5000)"),
      limit: z.number().min(1).max(50).optional().describe("Max results (default 10)"),
    },