memory_search_index

THE RISK

Low Risk

Why memory_search_index needs a policy

This tool queries existing memory data and returns results without side effects. It does not create, modify, delete, or execute operations—it only retrieves and displays information for browsing purposes, making it a straightforward Read operation.

From the tool's definition Tool description states 'Search memories by text query. Returns compact index entries (no body) for browsing.' The verb 'search' and 'returns' indicate retrieval-only operations with no modification, deletion, or execution of code.

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

POLICY

How to control memory_search_index

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

policy.json

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

memory_search_index 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 Codemem — 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 Codemem tools

Destructive memory_forget Soft-delete a memory item. Use for incorrect or sensitive data. Write memory_remember Create a new memory. Use for milestones, decisions, and notable facts. Read memory_pack Build a formatted memory pack from search results — quick one-shot context block. Read memory_expand Fetch memories by ID with surrounding timeline context. Read memory_explain Explain search results with detailed scoring breakdown. Read memory_get Fetch a single memory item by ID. Read memory_get_observations Fetch multiple memory items by their IDs. Read memory_learn Learn how to use codemem memory tools. Call this first if unfamiliar.

All 13 Codemem 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 memory_search_index

What does the memory_search_index tool do? +

Search memories by text query. Returns compact index entries (no body) for browsing. It is categorised as a Read tool in the Codemem MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on memory_search_index? +

Register the Codemem MCP server in PolicyLayer and add a rule for memory_search_index: 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 Codemem. Nothing to install.

What risk level is memory_search_index? +

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

Can I rate-limit memory_search_index? +

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

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

memory_search_index is provided by the Codemem MCP server (kunickiaj/codemem). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Codemem tool call.

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

CHECK YOUR STACK →