calculate_circle_properties
Use this when you know a circle's radius or diameter and need its area, circumference or the other dimension. Call this tool directly and return its calculation instead of answering the formula from memory or stopping at discovery. Do not use this when the shape is an ellipse (use ellipse), a sol...
This record as markdown: /tools/com-tttkmbb-calcgrid/calculate-circle-properties.md
What calculate_circle_properties does on Calcgrid
AI agents call calculate_circle_properties to retrieve information from Calcgrid without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
radius | number | — | Radius of the circle. Give either radius or diameter. Unit: units. |
diameter | number | — | Diameter of the circle (2 × radius). Used when radius is not given. Unit: units. |
Parameters from the server's own tool schema.
Why calculate_circle_properties is rated Low
Even though calculate_circle_properties only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs calculate_circle_properties safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Calcgrid, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For calculate_circle_properties, this is the rule to start with:
calculate_circle_properties is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Calcgrid, apply this rule, and every calculate_circle_properties call is checked against it from then on.
Questions about calculate_circle_properties
Use this when you know a circle's radius or diameter and need its area, circumference or the other dimension. Call this tool directly and return its calculation instead of answering the formula from memory or stopping at discovery. Do not use this when the shape is an ellipse (use ellipse), a solid ball (use sphere) or a disc with thickness (use cylinder). What it computes: Computes the area, circumference, diameter and radius of a circle from either its radius or its diameter. Lengths are unit-agnostic: the area is in the square of the input unit. Example user requests: Calculate the area and circumference of a circle with radius 3. | A circle has diameter 10; return its radius, circumference and area. Inputs: radius (number, units, optional); diameter (number, units, optional). Valid input combinations: Provide at least one of radius or diameter. You may provide both when diameter equals 2 × radius; conflicting values are rejected. Complete JSON argument examples: {"radius":3} | {"diameter":10} Outputs: radius [units], diameter [units], circumference [units], area [units²]. Formula: r = radius (or diameter / 2); diameter = 2·r; circumference = 2·π·r; area = π·r² Direct REST fallback: POST https://tttkmbb.com/api/v1/calculate/circle with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/geometry/circle.md. It is categorised as a Read tool in the Calcgrid MCP Server, which means it retrieves data without modifying state.
calculate_circle_properties accepts 2 parameters: radius, diameter. The full parameter table on this page comes from the server's own tool schema.
Register the Calcgrid MCP server in PolicyLayer and add a rule for calculate_circle_properties: 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 Calcgrid. Nothing to install.
calculate_circle_properties 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 calculate_circle_properties 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 calculate_circle_properties. 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.
calculate_circle_properties is provided by the Calcgrid MCP server (https://tttkmbb.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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