Calculates the area of a circle given its radius
AI agents call calculate_circle_area to retrieve information from MCP OAuth Sample without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a pure mathematical computation (area = π r²) with no side effects, no data storage, no external calls, and no destructive operations. It simply takes a radius input and returns a calculated value, making it a Read/query operation with minimal risk.
From the tool's definition Calculates the area of a circle given its radius
Attacks that exploit this kind of access
Calculates the area of a circle given its radius. It is categorised as a Read tool in the MCP OAuth Sample MCP Server, which means it retrieves data without modifying state.
Register the MCP OAuth Sample MCP server in PolicyLayer and add a rule for calculate_circle_area: 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 OAuth Sample. Nothing to install.
calculate_circle_area 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_area 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_area. 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_area is provided by the MCP OAuth Sample MCP server (raxitlabs/mcp-oauth-sample). 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 →