Unified list of the user
AI agents call list_subscriptions to retrieve information from Feedbagel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns subscription data without modifying, executing, or deleting anything. It has no side effects beyond data retrieval. Blast radius is minimal—an agent listing subscriptions cannot cause financial loss, code execution, or data destruction. Low severity appropriate for read-only operations.
From the tool's definition Tool name 'list_subscriptions' and server context (RSS feed management) indicate data retrieval. Description fragment 'Unified list of the user' is incomplete but clearly a listing operation.
Attacks that exploit this kind of access
Unified list of the user. It is categorised as a Read tool in the Feedbagel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Feedbagel MCP Server MCP server in PolicyLayer and add a rule for list_subscriptions: 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 Feedbagel MCP Server. Nothing to install.
list_subscriptions 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_subscriptions 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_subscriptions. 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_subscriptions is provided by the Feedbagel MCP Server MCP server (prototypr/feedbagel-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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