Calculate marginal distribution score between two datasets (real vs synthetic). Lower score means more similar distributions.
AI agents call get_marginal_distribution_score to retrieve information from Rockfish MCP 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 statistical calculation on datasets to compare their distributions. It reads data and computes a score, with no side effects, data modification, deletion, or external execution. The operation is deterministic analysis only, fitting the 'Read' category (retrieves/queries data).
From the tool's definition Tool description states 'Calculate marginal distribution score' — a computational analysis that retrieves or derives metrics from existing datasets without modifying, deleting, or executing external operations.
Attacks that exploit this kind of access
Calculate marginal distribution score between two datasets (real vs synthetic). Lower score means more similar distributions. It is categorised as a Read tool in the Rockfish MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Rockfish MCP Server MCP server in PolicyLayer and add a rule for get_marginal_distribution_score: 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 Rockfish MCP Server. Nothing to install.
get_marginal_distribution_score 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_marginal_distribution_score 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_marginal_distribution_score. 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_marginal_distribution_score is provided by the Rockfish MCP Server MCP server (wolfdancer/rockfish-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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