What is the key difference between Nominatim and Postcodes?

Nominatim belongs to the Location Services category with local stdio execution, while Postcodes belongs to the Location Services category with local stdio execution.

How do I install Nominatim or Postcodes in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Nominatim and Postcodes free or paid?

Nominatim operates under a Free / Open Source model (No auth required). Postcodes operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Nominatim lists 3 tools with 0 views and 0 GitHub stars. Postcodes lists 4 tools with 0 views and 0 GitHub stars.

Can I use both Nominatim and Postcodes together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Nominatim vs Postcodes

In-depth architectural comparison of the Nominatim and Postcodes MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Nominatim

Location Services · Local stdio

Quality: 53/100 (Good) | Auth: No auth required

Postcodes

Location Services · Local stdio

Quality: 53/100 (Good) | Auth: No auth required

Verdict Summary: Choose Nominatim if you need specialized Location Services tools running via a local process. Choose Postcodes if your workspace requires Location Services integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Nominatim when:

You need dedicated capabilities in the Location Services domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: search_address, reverse_geocode, lookup.

Explore Nominatim Details

Choose Postcodes when:

You need dedicated capabilities in the Location Services domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: lookup_postcode, nearest_postcodes, validate_postcode.

Explore Postcodes Details

Feature & Specification Comparison

Specification	Nominatim Location Services	Postcodes Location Services
Summary	Nominatim MCP — wraps OpenStreetMap Nominatim geocoding API (free, no auth)	Postcodes MCP — wraps postcodes.io UK postcode API (free, no auth)
Category & Scope	Location Services	Location Services
Quality signal

Tools & Capabilities Breakdown

Nominatim Tools (3)

search_address

Search for coordinates of an address or place name. Returns latitude, longitude, display name, and place type for matched locations.

reverse_geocode

Convert latitude/longitude coordinates to a human-readable address. Returns nearest address, place name, and administrative boundaries.

lookup

Get details for OpenStreetMap locations by ID (e.g., "N123456" for node, "W654321" for way, "R111" for relation). Returns coordinates, names, and metadata.

Postcodes Tools (4)

lookup_postcode

Get geographic details for a UK postcode (e.g., 'SW1A 1AA'). Returns coordinates, region, district, ward, and constituency.

nearest_postcodes

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Nominatim Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "nominatim": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-nominatim"
      ]
    }
  }
}

Postcodes Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "postcodes": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-postcodes"
      ]
    }
  }
}

Frequently Asked Questions

Nominatim is categorized under Location Services and uses a local stdio subprocess. In contrast, Postcodes belongs to Location Services using local stdio subprocess. Select Nominatim when you need capabilities focused on location services and Postcodes when you require tools for location services.

More alternatives to Nominatim More alternatives to Postcodes Location Services category hub