Get rune trees with keystones, minor runes, descriptions
AI agents call lol_get_runes to retrieve information from League of Legends MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves read-only reference data about League of Legends rune configurations. It does not modify game state, execute code, delete data, or commit financial transactions. It is a simple data lookup/query tool consistent with other sibling tools like 'lol_get_all_champions' and 'lol_get_champ_info'. Misuse by an AI agent would be limited to potentially providing inaccurate game advice, posing minimal risk.
From the tool's definition Tool name 'lol_get_runes' and description 'Get rune trees with keystones, minor runes, descriptions' indicate data retrieval with no side effects.
Attacks that exploit this kind of access
Get rune trees with keystones, minor runes, descriptions. It is categorised as a Read tool in the League of Legends MCP Server MCP Server, which means it retrieves data without modifying state.
Register the League of Legends MCP Server MCP server in PolicyLayer and add a rule for lol_get_runes: 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 League of Legends MCP Server. Nothing to install.
lol_get_runes 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 lol_get_runes 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 lol_get_runes. 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.
lol_get_runes is provided by the League of Legends MCP Server MCP server (rexlmanu/lol-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.
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