search_within_memory

THE RISK

Low Risk

Why search_within_memory needs a policy

The tool performs a query/search operation on existing memory data, returning information without modifying, executing code, deleting data, or creating financial obligations. It is a straightforward read operation with minimal risk.

From the tool's definition Tool name is 'search_within_memory' and description states it 'Search[es] for information within a memory document'. This is a retrieval operation with no side effects.

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

POLICY

How to control search_within_memory

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

policy.json

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

search_within_memory 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 Mcp Structured 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 Mcp Structured Memory tools

Write add_to_list Add an item to a list section in a memory document Write create_memory Create a new structured memory document with optional initial content. IMPORTANT: After us Write move_list_item Move an item from one section to another Write update_list_item Update an existing item in a list section Write update_section Update an entire section of a memory document. Content supports full Markdown formatting i Read get_full_memory Retrieve the complete content of a memory document with all Markdown formatting preserved Read get_memory_summary Get a high-level summary of a memory document Read get_section Retrieve a specific section from a memory document

All 10 Mcp Structured 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 search_within_memory

What does the search_within_memory tool do? +

Search for information within a memory document. It is categorised as a Read tool in the Mcp Structured Memory MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_within_memory? +

Register the Mcp Structured Memory MCP server in PolicyLayer and add a rule for search_within_memory: 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 Mcp Structured Memory. Nothing to install.

What risk level is search_within_memory? +

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

Can I rate-limit search_within_memory? +

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

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

search_within_memory is provided by the Mcp Structured Memory MCP server (nmeierpolys/mcp-structured-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Structured Memory tool call.

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

CHECK YOUR STACK →