Raw recall from knowledge base without AI synthesis. Returns list of relevant notes/files.
AI agents call recall_knowledge to retrieve information from Get Notes MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves data from a knowledge base without creating, modifying, deleting, or executing operations. The return of a list of notes/files is a read-only operation. No data is changed, and no external code or commands are executed. The low severity reflects minimal risk if misused by an agent—the worst outcome would be unauthorized information disclosure from the knowledge base.
From the tool's definition Tool name 'recall_knowledge' and description 'Raw recall from knowledge base without AI synthesis. Returns list of relevant notes/files' indicate data retrieval with no modification or side effects.
Documented attack patterns abuse exactly the kind of access recall_knowledge gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Get Notes MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for recall_knowledge:
{
"version": "1",
"default": "deny",
"tools": {
"recall_knowledge": {}
}
}recall_knowledge is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Raw recall from knowledge base without AI synthesis. Returns list of relevant notes/files. It is categorised as a Read tool in the Get Notes MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Get Notes MCP Server MCP server in PolicyLayer and add a rule for recall_knowledge: 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 Get Notes MCP Server. Nothing to install.
recall_knowledge 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 recall_knowledge 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 recall_knowledge. 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.
recall_knowledge is provided by the Get Notes MCP Server MCP server (pancrepal-xiaoyibao/get-biji-dev-by-gemini3pro). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Get Notes MCP Server, 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.
3 Get Notes MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.