Search persistent memory using full-text search (and semantic search when available). Returns memories ranked by relevance. Use this to recall information from previous sessions.
AI agents call crow_search_memories to retrieve information from Crow without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries stored data (memories) without side effects. It is a search/retrieval operation that does not create, modify, delete, or execute anything. The only risk is information disclosure of memories, which is inherent to a read operation and typically low-severity in an AI assistant context where the AI has legitimate access to its own memory store.
From the tool's definition Tool performs 'full-text search' and 'semantic search' on persistent memory, 'returns memories ranked by relevance' with no modification, deletion, or execution capability described.
Documented attack patterns abuse exactly the kind of access crow_search_memories gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for crow_search_memories:
{
"version": "1",
"default": "deny",
"tools": {
"crow_search_memories": {}
}
}crow_search_memories is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search persistent memory using full-text search (and semantic search when available). Returns memories ranked by relevance. Use this to recall information from previous sessions. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.
Register the Crow MCP server in PolicyLayer and add a rule for crow_search_memories: 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 Crow. Nothing to install.
crow_search_memories is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the crow_search_memories 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.
Set action: deny in the PolicyLayer policy for crow_search_memories. 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.
crow_search_memories is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
576 Crow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.