Checks if a given number is prime
AI agents call check_prime_number 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 is a read-only operation that performs a computation and returns a result without creating, modifying, deleting, or executing any external actions. No authentication bypass, data exfiltration, or system compromise is possible through misuse of this mathematical utility.
From the tool's definition Tool name is 'check_prime_number' and description states it 'Checks if a given number is prime' — a pure mathematical query with no side effects, data modification, or external state changes.
Attacks that exploit this kind of access
Checks if a given number is prime. 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 check_prime_number: 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.
check_prime_number 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 check_prime_number 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 check_prime_number. 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.
check_prime_number 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.
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