Postal Lookup MCP

io.github.Lulu-The-NarwhalPublished by GitHub account Lulu-The-Narwhalv0.1.1Updated Oct 24, 2026

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

VerifiedStreamable HTTPWeb executableLocation & Lifestyle

Overview

AI-generated overview

A free, keyless remote MCP server that lets an assistant look up postal and ZIP codes to get place names, state or region, and coordinates.

What you can do
Look up a postal or ZIP code and return the matching place name or names, the state or region, and geographic coordinates. No other tools are listed, so the server appears limited to this single lookup capability.
When to use it
Useful when an assistant needs to resolve a postal or ZIP code into a place, region, or coordinates, for example to check an address or place a location on a map, without signing up for an API key.
Requirements
A remote streamable HTTP endpoint; no local package, account, API key, environment variable, or header is declared. Network access to the remote endpoint is required.
Before you install
The endpoint is hosted by a third party, so lookup queries are sent to that operator; avoid submitting sensitive address data. No authentication is declared, so availability and rate limits are not guaranteed.

Installation

In SourceWeft

  1. Open Postal Lookup MCP in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.Lulu-The-Narwhal%2Fpostal-lookup-mcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "postal-lookup": {
      "type": "http",
      "url": "https://ads.getlulu.dev/postal/mcp"
    }
  }
}

README

This repository has no README.

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v0.1.1LatestSep 16, 2026

Score

60% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • License10 pts

    Declare a license in the repository or the registry entry.