search_memories_similarity

THE RISK

Low Risk

Why search_memories_similarity needs a policy

This tool queries an existing memory store using vector similarity and returns matching results without modifying, executing code, or causing destructive side effects. It is a standard read operation with minimal risk—an AI agent using it can only retrieve information, not alter state or trigger external actions.

From the tool's definition Tool name 'search_memories_similarity' and description 'Search memories by vector similarity' indicate a query/retrieval operation.

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

POLICY

How to control search_memories_similarity

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

policy.json

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

search_memories_similarity 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 AGI MCP Server — 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 AGI MCP Server tools

Destructive prune_memories Permanently delete memories based on criteria Destructive cleanup_expired_working_memory Clean up expired working memories Write consolidate_working_memory Consolidate multiple working memories into a single semantic memory Write activate_cluster Activate a memory cluster and get its associated memories Write archive_old_memories Archive old memories based on age and importance criteria Write create_memory Create a new memory with optional type-specific metadata Write create_memory_cluster Create a new memory cluster Write create_memory_relationship Create a relationship between two memories

All 24 AGI MCP Server 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_memories_similarity

What does the search_memories_similarity tool do? +

Search memories by vector similarity. It is categorised as a Read tool in the AGI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_memories_similarity? +

Register the AGI MCP Server MCP server in PolicyLayer and add a rule for search_memories_similarity: 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 AGI MCP Server. Nothing to install.

What risk level is search_memories_similarity? +

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

Can I rate-limit search_memories_similarity? +

Yes. Add a rate_limit block to the search_memories_similarity 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_memories_similarity completely? +

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

search_memories_similarity is provided by the AGI MCP Server MCP server (quixiai/agi-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every AGI MCP Server tool call.

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

CHECK YOUR STACK →