A tool to calculate mean or average value of a collection of numbers
AI agents call mean_or_average_calculator to retrieve information from JeffersonStats without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a pure computational read operation that takes input numbers and returns a calculated result (mean/average). It has no side effects, does not modify data, and does not execute arbitrary code. It falls clearly into the Read category with low severity since misuse would only affect the accuracy of statistical analysis, not cause data loss or unauthorized access.
From the tool's definition Tool performs statistical calculation on provided data: 'calculate mean or average value of a collection of numbers'. No modification, deletion, or external state change occurs.
Attacks that exploit this kind of access
A tool to calculate mean or average value of a collection of numbers. It is categorised as a Read tool in the JeffersonStats MCP Server, which means it retrieves data without modifying state.
Register the JeffersonStats MCP server in PolicyLayer and add a rule for mean_or_average_calculator: 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 JeffersonStats. Nothing to install.
mean_or_average_calculator 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 mean_or_average_calculator 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 mean_or_average_calculator. 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.
mean_or_average_calculator is provided by the JeffersonStats MCP server (sharabhshukla/jeffersonstatsmcp). 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.
Teams ship this data inside their own products. See what a licence covers →