AI agents call get_physical_media to retrieve information from Rewind without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays information about a user's physical media collection. It performs read-only operations (browsing, searching, filtering) on personal data without creating, modifying, deleting, or executing anything.
From the tool's definition Tool description states 'Browse the physical media collection' and 'Search by title, filter by format. Returns top-N cover art and pagination.' These are query/retrieval operations with no data modification, deletion, or execution.
Attacks that exploit this kind of access
Browse the physical media collection (Blu-ray, 4K UHD, HD DVD). Search by title, filter by format. Returns top-N cover art and pagination. It is categorised as a Read tool in the Rewind MCP Server, which means it retrieves data without modifying state.
Register the Rewind MCP server in PolicyLayer and add a rule for get_physical_media: 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 Rewind. Nothing to install.
get_physical_media 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 get_physical_media 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 get_physical_media. 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.
get_physical_media is provided by the Rewind MCP server (rewind-mcp-server). 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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