Invokera Postal Codes MCP

An MCP server that resolves postal or ZIP codes to place names, states, and coordinates across 60+ countries. It leverages the public Zippopotam.us API to provide address validation and geo-enrichment capabilities for AI agents, allowing lookups of cities and regions based on postal codes.

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Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Vendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-06Operated by Invokera

You need:Calls require an endpoint token issued by the project owner.

MCP endpoint (Streamable HTTP)

https://invokera.com/r/postal-codes

Vendor documentation

What its tools do

1 tool, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (1)

lookup_postal_code

1 of 1 have a description · 1 of 1 declare behavior hints · 1 of 1 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 6, 2026, 11:04 PM UTC
Passed Official MCP Registry namespace is tied to invokera.com · Nov 6, 2026, 10:43 PM UTC
Passed Endpoint is on the registry namespace domain · Nov 6, 2026, 10:43 PM UTC
Availability 1 of 1 checks passed in 30 days

What you can do with it

Resolve postal codes to place names and coordinates
Validate addresses for 60+ countries
Enrich data with geo-location information

Source and maintenance

Vendor evidenceRegistry 1.0.0

mcp-registry: com.invokera/postal-codes@1.0.0 Project website

Protocol and capabilities

Server: invokera-postal-codes 1.0.0
MCP protocol negotiated in check: 2025-06-18
Tools: 1 advertised
Resources: Not advertised
Resource templates: Not advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {}
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Tools for Postal Code Lookup. Served by Invokera on behalf of api.zippopotam.us.

Tools

1 advertised

lookup_postal_code

Advertised by the server during the last successful anonymous check.

Advertised read-only

Look up a postal code. Returns the places (city, state/region, latitude/longitude) matching the given postal code in the given country. Returns: Matching places with coordinates for the postal code..

lookup_postal_code input schema

{
  "type": "object",
  "required": [
    "country",
    "postalCode"
  ],
  "properties": {
    "country": {
      "type": "string",
      "pattern": "^[a-z]{2}$",
      "description": "Two-letter lowercase country code, e.g. us, de, fr."
    },
    "postalCode": {
      "type": "string",
      "description": "Postal / ZIP code to look up, e.g. 90210."
    }
  },
  "additionalProperties": false
}

lookup_postal_code annotations

{
  "readOnlyHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 336 ms
95th percentile latency: 336 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 6, 2026, 11:04 PM UTC · probe · passed · 336 ms · metadata changed · 1 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http postal-codes-mcp https://invokera.com/r/postal-codes

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add postal-codes-mcp --url https://invokera.com/r/postal-codes

Cursor

Merge this server into .cursor/mcp.json in your project, then enable postal-codes-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "postal-codes-mcp": {
      "url": "https://invokera.com/r/postal-codes"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "postal-codes-mcp": {
      "type": "streamableHttp",
      "url": "https://invokera.com/r/postal-codes",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start postal-codes-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "postal-codes-mcp": {
      "type": "http",
      "url": "https://invokera.com/r/postal-codes"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http postal-codes-mcp https://invokera.com/r/postal-codes

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.

Claude Desktop configuration

https://invokera.com/r/postal-codes

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "postal-codes-mcp": {
      "serverUrl": "https://invokera.com/r/postal-codes"
    }
  }
}

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