Performs safe file system operations including read, write, list, delete, and exists checks
AI agents call file_operations to permanently remove resources in Creating Your First — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Although the description uses the word 'safe', the tool includes delete operations which are irreversible and destructive. Per classification rules, Destructive (irreversible data loss) ranks higher than Write (reversible modifications). The delete capability makes this tool dangerous if an AI agent is tricked into deleting important files.
From the tool's definition Performs safe file system operations including read, write, list, delete, and exists checks - explicitly lists 'delete' as a capability
Attacks that exploit this kind of access
Performs safe file system operations including read, write, list, delete, and exists checks. It is categorised as a Destructive tool in the Creating Your First MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Creating Your First MCP server in PolicyLayer and add a rule for file_operations: 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 Creating Your First. Nothing to install.
file_operations 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 file_operations 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 file_operations. 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.
file_operations is provided by the Creating Your First MCP server (ry-ops/creating-your-first-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
file_operations is one line of Creating Your First's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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