Get full paginated web search sources (fanout) that influenced a specific AI recommendation result.
AI agents call get_fanout_sources to retrieve information from FullMention without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries information about web search sources and their influence on AI recommendations—a read-only operation with no side effects. It fits the Read category definition: 'retrieves or queries data; no side effects (search, list, get, fetch).' The severity is low because unauthorized access would expose competitive brand visibility data but cannot modify, delete, execute code, or move money.
From the tool's definition Tool name 'get_fanout_sources' and description 'Get full paginated web search sources' indicate data retrieval with no modification or deletion.
Attacks that exploit this kind of access
Get full paginated web search sources (fanout) that influenced a specific AI recommendation result. It is categorised as a Read tool in the FullMention MCP Server, which means it retrieves data without modifying state.
Register the FullMention MCP server in PolicyLayer and add a rule for get_fanout_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 FullMention. Nothing to install.
get_fanout_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_fanout_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_fanout_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_fanout_sources is provided by the FullMention MCP server (riisager/fullmention-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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