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Boundr

io.github.danielinniss/boundr · v1.1.0

Measured by MCP Station

Description written by the publisher, not verified

UK administrative boundary data from OS Boundary Line: name search, point lookup, GeoJSON geometries

Connect

claude mcp add --transport http boundr https://mcp.boundr.dev/mcp

{
  "mcpServers": {
    "boundr": {
      "url": "https://mcp.boundr.dev/mcp"
    }
  }
}

Tools as reported by the server

• list_boundary_type_codes
  Returns every valid UK boundary type code mapped to its human-readable label. Call this before using any tool that accepts a `boundary_type` or `boundary_types` argument so you know which codes are legal. Passing an unlisted code to another tool raises a ValueError. Boundary type codes are stable Or
• search_boundaries_by_name
  Search for UK administrative boundaries by name (case-insensitive partial match). Use this to discover boundaries when you have a place name but not a code. Returns lightweight metadata only — no geometry. If you need to display or analyse the boundary shape, call get_boundary_geojson_by_code() with
• find_boundaries_at_point
  Find all UK administrative boundaries that geographically contain a coordinate point. Use this to answer "what county/borough/ward is this location in?" for a latitude/longitude. Returns lightweight metadata only — no geometry. If you need to display a boundary shape, call get_boundary_geojson_by_co
• get_boundary_by_code
  Look up metadata for a single UK boundary by its ONS census code. No geometry. Use this when you already have a census code (e.g. from search_boundaries_by_name() or find_boundaries_at_point()) and need structured metadata such as area size or type label. If you also need the boundary shape for disp
• get_boundary_geojson_by_code
  Fetch the full GeoJSON geometry for a UK boundary by its ONS census code. Returns a GeoJSON Feature object (WGS-84 / EPSG:4326) suitable for rendering on a map or performing geometric analysis. The geometry can be large — county and ceremonial county polygons are especially heavy. Only call this whe
• get_boundary_geojson_simplified
  Fetch simplified GeoJSON for a boundary by its ONS census code. Safe to embed directly in generated HTML map files. At the default tolerance (0.0001°) a constituency polygon shrinks from ~4,000 vertices to ~200–400 with no visible difference at normal map zoom levels. Prefer this over get_boundary_g
• get_boundary_bbox
  Get the bounding box and centroid for a boundary by its ONS census code. Returns min_lat, max_lat, min_lng, max_lng, centroid_lat, centroid_lng. Pass the bbox values directly to Knotsure's sightings_in_bbox() or geographic_summary(). Much cheaper than get_boundary_geojson_by_code() for spatial queri

Repository · Website · JSON · Text for agents · Registry updated 2026-07-19