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MCP MCP 2025-11-25 streamable-http ext: ui

Postal Lookup MCP

io.github.lulu-the-narwhal/postal-lookup-mcp

Free, keyless postal/ZIP code lookup: place name(s), state/region, and coordinates.

Watch this dependency Share evidence report
Uptime
60.0%
5 direct probes · 30d
Response
227ms
last probe
Tools
1
callable
Resources
2
readable
Prompts
0
available
Primary URL
https://ads.getlulu.dev/postal/mcp
Score: 100/100
Handshake verified by our own probe.
The latest probe failed: initialize returned HTTP 502: init HTTP 502. The server was up for 60% of its last 30 days, so this counts as a blip and the score holds; it drops once uptime falls below 50%.
pass Answers the MCP handshake 50/50
Handshake verified earlier; the latest probe failed (see the note above).
pass Lists tools, resources or prompts 30/30
1 tools, 2 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
3 items in total; 3 or more earns these points.
pass Describes itself 10/10
83 characters; more than 30 earns these points.

Tools · 1

lookup_postal_code

Resolve a postal/ZIP code to its place name(s), state/region, and coordinates. `country_code` is a 2-letter ISO code (US, GB, DE, ...); `postal_code` format varies by country (e.g. "90210" for the US,…

Resources · 2

sponsored_card ui://lulu-ads/sponsored.html
result_widget_lookup_postal_code ui://lulu-ads/result-lookup_postal_code.html

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://ads.getlulu.dev/postal/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "postal_lookup_mcp": {
      "url": "https://ads.getlulu.dev/postal/mcp",
      "transport": "streamable-http"
    }
  }
}