brave_local_search

THE RISK

Low Risk

Why brave_local_search needs a policy

brave_local_search retrieves location-based business information without side effects. It queries an external service (Brave) for read-only data about local businesses. This fits the Read category definition: 'retrieves or queries data; no side effects (search, list, get, fetch).' The blast radius of misuse is minimal—an AI agent could perform unwanted searches or gather information, but cannot modify data, execute…

From the tool's definition Tool description states it 'Search[es]' and 'Returns' data (address, phone, ratings, hours) with no mention of modification, deletion, or execution capabilities. The verb 'search' and the passive 'returns' indicate a query-only operation.

Documented attack patterns abuse exactly the kind of access brave_local_search gives an agent:

POLICY

How to control brave_local_search

PolicyLayer is an MCP gateway — it sits between your AI agents and Claude TypeScript MCP Servers, and nothing reaches the server without passing your rules. This is the rule we recommend for brave_local_search:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "brave_local_search": {}
  }
}

brave_local_search is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Claude TypeScript MCP Servers — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about brave_local_search

What does the brave_local_search tool do? +

Search local businesses, services, and places. Returns real-time data including address, phone, ratings, hours. Use for location-based queries. It is categorised as a Read tool in the Claude TypeScript MCP Servers MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on brave_local_search? +

Register the Claude TypeScript MCP Servers MCP server in PolicyLayer and add a rule for brave_local_search: 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 Claude TypeScript MCP Servers. Nothing to install.

What risk level is brave_local_search? +

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

Can I rate-limit brave_local_search? +

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

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

brave_local_search is provided by the Claude TypeScript MCP Servers MCP server (ukkz/claude-ts-mcps). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Claude TypeScript MCP Servers tool call.

Start from Claude TypeScript MCP Servers, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →