AI agents call suggest_memory_from_query to retrieve information from Code Graph Knowledge System without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name strongly suggests it retrieves or generates suggestions from existing query data (Read category). The empty description prevents higher confidence, but contextual analysis of the name and comparison to sibling tools (which include write operations like 'add_*' and destructive operations like 'clear_knowledge_base') indicates this tool performs a non-mutating query operation.
From the tool's definition Tool name 'suggest_memory_from_query' indicates a query-based suggestion/retrieval operation. The prefix 'suggest_' and suffix '_from_query' imply data retrieval or inference without modification.
Documented attack patterns abuse exactly the kind of access suggest_memory_from_query gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Code Graph Knowledge System, and nothing reaches the server without passing your rules. This is the rule we recommend for suggest_memory_from_query:
{
"version": "1",
"default": "deny",
"tools": {
"suggest_memory_from_query": {}
}
}suggest_memory_from_query is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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suggest_memory_from_query. It is categorised as a Read tool in the Code Graph Knowledge System MCP Server, which means it retrieves data without modifying state.
Register the Code Graph Knowledge System MCP server in PolicyLayer and add a rule for suggest_memory_from_query: 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 Code Graph Knowledge System. Nothing to install.
suggest_memory_from_query 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 suggest_memory_from_query 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 suggest_memory_from_query. 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.
suggest_memory_from_query is provided by the Code Graph Knowledge System MCP server (royisme/codebase-rag). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Code Graph Knowledge System, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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30 Code Graph Knowledge System tools catalogued and risk-classified — across an index of 43,000+ MCP servers.