list_cities

List every city covered by the Booyah Index with its place count. Call this first if unsure which city name to pass as the city filter in search_places — avoids guessing at spelling or coverage.

SERVERBooyah Index SOURCEhttps://getbooyah.com/api/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/com-getbooyah-booyah-index/list-cities.md

WHAT IT DOES

What list_cities does on Booyah Index

AI agents call list_cities to retrieve information from Booyah Index without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_cities is rated Low

Even though list_cities only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_cities safely

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

list_cities Allowed

list_cities 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": {
    "list_cities": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Booyah Index, apply this rule, and every list_cities call is checked against it from then on.

FAQ

Questions about list_cities

What does the list_cities tool do? +

List every city covered by the Booyah Index with its place count. Call this first if unsure which city name to pass as the city filter in search_places — avoids guessing at spelling or coverage. It is categorised as a Read tool in the Booyah Index MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_cities? +

Register the Booyah Index MCP server in PolicyLayer and add a rule for list_cities: 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 Booyah Index. Nothing to install.

What risk level is list_cities? +

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

Can I rate-limit list_cities? +

Yes. Add a rate_limit block to the list_cities 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 list_cities completely? +

Set action: deny in the PolicyLayer policy for list_cities. 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 list_cities? +

list_cities is provided by the Booyah Index MCP server (https://getbooyah.com/api/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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