Postcodes vs Exa MCP Server

A side-by-side look at the Postcodes and Exa MCP Server MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Postcodes logoPostcodesLocation Services · Local subprocess (stdio)Postcodes MCP — wraps postcodes.io UK postcode API (free, no auth)53GoodAuth: not declaredExa MCP Server logoExa MCP ServerSearch & Data Extraction · Local subprocess (stdio)A Model Context Protocol (MCP) server lets AI assistants like Claude use the Exa AI Search API for web searches. This setup allows AI models to get real-time web information in a safe and controlled way.73GreatAuth: no auth required

Verdict: choose Postcodes for location services work as a local process; choose Exa MCP Server for search & data extraction as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Postcodes logoChoose Postcodes when

  • You need dedicated capabilities in the Location Services domain.
  • You prefer a local stdio subprocess transport.
  • You want tools like lookup_postcode, nearest_postcodes, validate_postcode.
Explore Postcodes

Exa MCP Server logoChoose Exa MCP Server when

  • You need dedicated capabilities in the Search & Data Extraction domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: No auth required.
  • You want tools like web_search_exa, web_fetch_exa.
Explore Exa MCP Server

Feature & specification comparison

Rows where the two servers differ are marked.

SpecPostcodes logoPostcodesExa MCP Server logoExa MCP Server
CategoryLocation ServicesSearch & Data Extraction
Quality signal53/100 · Good73/100 · Great
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredNo auth required
PricingNot declaredFree
Required env varsNone listedNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars05,150
Directory activity 1 views 0 installs 0 upvotes 10 views 0 installs 0 upvotes
Tools42

Tools & capabilities

Postcodes tools 4

  • lookup_postcodeGet geographic details for a UK postcode (e.g., 'SW1A 1AA'). Returns coordinates, region, district, ward, and constituency.
  • nearest_postcodesFind nearby UK postcodes sorted by distance from a given postcode (e.g., 'SW1A 1AA'). Returns list with coordinates.
  • validate_postcodeValidate a UK postcode format (e.g., 'SW1A 1AA'). Returns whether it's valid and format details.
  • random_postcodeGet a random valid UK postcode with full geographic details. Returns coordinates, region, district, ward, and constituency.

Exa MCP Server tools 2

  • web_search_exaSearch the web for any topic and get clean, ready-to-use content. Best for: Finding current information, news, facts, people, companies, or answering questions about any topic. Returns: Clean text content from top search results. Query tips: describe the ideal page, not keywords. "blog post comparing React and Vue performance" not "React vs Vue". Use category:people / category:company to search through Linkedin profiles / companies respectively. If highlights are insufficient, follow up with web_fetch_exa on the best URLs.
  • web_fetch_exaRead a webpage's full content as clean markdown. Use after web_search_exa when highlights are insufficient or to read any URL. Best for: Extracting full content from known URLs. Batch multiple URLs in one call. Returns: Clean text content and metadata from the page(s).

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Postcodes

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "postcodes": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-postcodes"
      ]
    }
  }
}

Exa MCP Server

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "exa-labs-exa-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "exa-mcp-server"
      ]
    }
  }
}

Frequently asked questions

Postcodes is categorized under Location Services and uses a local stdio subprocess. Exa MCP Server belongs to Search & Data Extraction and uses a local stdio subprocess. Pick Postcodes for location services work and Exa MCP Server for search & data extraction.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

Postcodes has no declared pricing — check the project's own site. Exa MCP Server is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add postcodes and exa-labs-exa-mcp-server as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Postcodes has a quality signal of 53/100 (Good) with 1 views, 0 installs and 0 GitHub stars. Exa MCP Server has 73/100 (Great) with 10 views, 0 installs and 5,150 GitHub stars.