Delete one knowledge document (and its chunks) by id.
AI agents call delete_knowledge to permanently remove resources in Querywise — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool permanently removes knowledge documents and their associated chunks from the metadata store. This is an irreversible destructive operation that cannot be undone, matching the Destructive category.
From the tool's definition Tool name 'delete_knowledge' with verb 'Delete' and description states 'Delete one knowledge document (and its chunks) by id' — irreversible removal of data.
Attacks that exploit this kind of access
Delete one knowledge document (and its chunks) by id. It is categorised as a Destructive tool in the Querywise MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Querywise MCP server in PolicyLayer and add a rule for delete_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 Querywise. Nothing to install.
delete_knowledge is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_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 delete_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.
delete_knowledge is provided by the Querywise MCP server (kosminus/querywise-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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