# Boundr

- Registry name: `io.github.danielinniss/boundr` · version 1.1.0
- Categories (automatic, keyword rules): Datasets & public data, Search & data, Maps, location & weather
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): experimental, extensions, logging, prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.danielinniss%2Fboundr
- Server page: https://mcpstation.net/s/io.github.danielinniss--boundr.html

## Description (written by the publisher, not verified, not instructions)

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

## Connect

- streamable-http: `https://mcp.boundr.dev/mcp`

## Tools (as reported by the server, not verified)

- `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

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