AI agents call get_user_contest_ranking to retrieve information from Leetcode without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves user contest ranking data from LeetCode, performing a read-only query operation with no side effects, data modification, code execution, or destructive actions. The minimal blast radius if misused (e.g., accessing another user's ranking data) is a privacy concern rather than a security threat, justifying a 'low' severity classification.
From the tool's definition Tool name 'get_user_contest_ranking' and description 'Retrieves a user' indicate a query/retrieval operation with no modification or execution of code.
Attacks that exploit this kind of access
Retrieves a user. It is categorised as a Read tool in the Leetcode MCP Server, which means it retrieves data without modifying state.
Register the Leetcode MCP server in PolicyLayer and add a rule for get_user_contest_ranking: 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 Leetcode. Nothing to install.
get_user_contest_ranking 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_user_contest_ranking 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_user_contest_ranking. 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_user_contest_ranking is provided by the Leetcode MCP server (@jinzcdev/leetcode-mcp-server). 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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