nominatim-lookup

Look up one or more OSM objects by ID (e.g.

SERVERMeta Data Mcp SOURCEpypi:meta-data-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-derekslinz-meta-data-mcp/nominatim-lookup.md

WHAT IT DOES

What nominatim-lookup does on Meta Data Mcp

AI agents call nominatim-lookup to retrieve information from Meta Data Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why nominatim-lookup is rated Low

This tool performs data retrieval only. It queries OSM (OpenStreetMap) objects by their identifiers and returns results. There is no capability to modify, delete, or execute operations. The blast radius of misuse is minimal — an agent could only retrieve excessive amounts of public geographic data, which is not destructive or risky.

From the tool's definition Tool description states 'Look up one or more OSM objects by ID' — a query operation that retrieves data from OpenStreetMap without modification or execution of arbitrary code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs nominatim-lookup safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Meta Data Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For nominatim-lookup, this is the rule to start with:

nominatim-lookup Allowed

nominatim-lookup is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "nominatim-lookup": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Meta Data Mcp, apply this rule, and every nominatim-lookup call is checked against it from then on.

FAQ

Questions about nominatim-lookup

What does the nominatim-lookup tool do? +

Look up one or more OSM objects by ID (e.g. It is categorised as a Read tool in the Meta Data Mcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on nominatim-lookup? +

Register the Meta Data MCP server in PolicyLayer and add a rule for nominatim-lookup: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Meta Data Mcp. Nothing to install.

What risk level is nominatim-lookup? +

nominatim-lookup is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit nominatim-lookup? +

Yes. Add a rate_limit block to the nominatim-lookup rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block nominatim-lookup completely? +

Set action: deny in the PolicyLayer policy for nominatim-lookup. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides nominatim-lookup? +

nominatim-lookup is provided by the Meta Data MCP server (pypi:meta-data-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Meta Data, and thousands of servers like it.

This server

All 396 Meta Data tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →