All sources of the article, the result is in array form. If you want to use the source parameter of get_content, which values should be used, call it first
AI agents call get_sources to retrieve information from MCP RSS Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple query/lookup operation to enumerate available RSS feed sources. It has no side effects, creates no data modifications, executes no code, and poses minimal security risk. It is purely informational, making it a Read category tool with low severity.
From the tool's definition Tool name 'get_sources' and description indicate it retrieves and lists RSS feed sources in array form. The description states it returns source values for reference by other tools, with no capability to modify, delete, or execute operations.
Attacks that exploit this kind of access
All sources of the article, the result is in array form. If you want to use the source parameter of get_content, which values should be used, call it first. It is categorised as a Read tool in the MCP RSS Server MCP Server, which means it retrieves data without modifying state.
Register the MCP RSS Server MCP server in PolicyLayer and add a rule for get_sources: 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 MCP RSS Server. Nothing to install.
get_sources 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_sources 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_sources. 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_sources is provided by the MCP RSS Server MCP server (xrusjohn/mcp_rss_buhe). 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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