删除知识库中的某个文件
AI agents call delete_file to permanently remove resources in RAG MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes files from a knowledge base without the ability to undo the action. File deletion is irreversible and constitutes data destruction. Despite being scoped to a single file rather than a database, the destructive nature of the operation and its finality place it in the Destructive category.
From the tool's definition Tool name 'delete_file' combined with description '删除知识库中的某个文件' (delete a file from the knowledge base). The Chinese verb '删除' explicitly means 'to delete', indicating irreversible removal of data from the knowledge base.
Attacks that exploit this kind of access
删除知识库中的某个文件. It is categorised as a Destructive tool in the RAG MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the RAG MCP Server MCP server in PolicyLayer and add a rule for delete_file: 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 RAG MCP Server. Nothing to install.
delete_file 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_file 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_file. 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_file is provided by the RAG MCP Server MCP server (sglwsjxh/rag-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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