AI agents call disk_info 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 retrieves account quota and storage usage metadata without any side effects. It performs no write, delete, execute, or financial operations. It is a straightforward read operation that queries system state information about disk allocation and consumption, presenting minimal security risk if misused by an agent.
From the tool's definition Tool description states 'Get Yandex Disk quota and usage information' — a purely informational retrieval operation with no modification, deletion, or execution capabilities. The verb 'Get' indicates data querying only.
Attacks that exploit this kind of access
Get Yandex Disk quota and usage information. 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 disk_info: 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.
disk_info 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 disk_info 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 disk_info. 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.
disk_info 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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