AI agents call list_trash to retrieve information from Yadisk without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation to enumerate files in a trash/recycle bin directory. It has no side effects, does not modify or delete data, and presents minimal risk if misused by an AI agent. The operation is informational only.
From the tool's definition Tool name 'list_trash' and description 'List files in the Trash' indicate a retrieval operation that queries the contents of the trash folder without modifying or deleting any data.
Attacks that exploit this kind of access
List files in the Trash. It is categorised as a Read tool in the Yadisk MCP Server, which means it retrieves data without modifying state.
Register the Yadisk MCP server in PolicyLayer and add a rule for list_trash: 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 Yadisk. Nothing to install.
list_trash 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 list_trash 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 list_trash. 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.
list_trash is provided by the Yadisk MCP server (patr56/yadisk-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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