m3_web_search

THE RISK

Low Risk

Why m3_web_search needs a policy

Web search is a read-only operation that queries external search engines and returns results. It has no side effects on data—it neither creates, modifies, deletes, executes code, nor moves money. The tool's purpose is information retrieval. Confidence is high because web search semantics are well-established and unambiguous.

From the tool's definition Tool description states 'Alias for web_search' with primary provider (Perplexity sonar-pro) and fallback (Grok grok-3-latest). Web search retrieves information from external sources without modifying data.

Documented attack patterns abuse exactly the kind of access m3_web_search gives an agent:

POLICY

How to control m3_web_search

PolicyLayer is an MCP gateway — it sits between your AI agents and M3 Memory, and nothing reaches the server without passing your rules. This is the rule we recommend for m3_web_search:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "m3_web_search": {}
  }
}

m3_web_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 M3 Memory — 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

Related tools and policies

More M3 Memory tools

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All 43 M3 Memory tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 m3_web_search

What does the m3_web_search tool do? +

Alias for web_search. Primary: Perplexity sonar-pro. Fallback: Grok grok-3-latest. It is categorised as a Read tool in the M3 Memory MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on m3_web_search? +

Register the M3 Memory MCP server in PolicyLayer and add a rule for m3_web_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 M3 Memory. Nothing to install.

What risk level is m3_web_search? +

m3_web_search is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit m3_web_search? +

Yes. Add a rate_limit block to the m3_web_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 m3_web_search completely? +

Set action: deny in the PolicyLayer policy for m3_web_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 m3_web_search? +

m3_web_search is provided by the M3 Memory MCP server (skynetcmd/m3-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every M3 Memory tool call.

Start from M3 Memory, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →