Returns a list of favorite groups owned by a user.
AI agents call vrchat_list_favorite_groups to retrieve information from VRChat MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a straightforward read operation that queries and retrieves user data (favorite groups list). There is no creation, modification, deletion, code execution, or financial impact. The blast radius of misuse is minimal—an agent could enumerate a user's group preferences but cannot alter data or trigger external actions. Confidence is high due to clear read semantics in both name and description.
From the tool's definition Tool name 'list' and description 'Returns a list' indicate data retrieval with no modification. The function retrieves favorite groups owned by a user—a query operation with no side effects.
Documented attack patterns abuse exactly the kind of access vrchat_list_favorite_groups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and VRChat MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for vrchat_list_favorite_groups:
{
"version": "1",
"default": "deny",
"tools": {
"vrchat_list_favorite_groups": {}
}
}vrchat_list_favorite_groups is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Returns a list of favorite groups owned by a user. It is categorised as a Read tool in the VRChat MCP Server MCP Server, which means it retrieves data without modifying state.
Register the VRChat MCP Server MCP server in PolicyLayer and add a rule for vrchat_list_favorite_groups: 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 VRChat MCP Server. Nothing to install.
vrchat_list_favorite_groups 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 vrchat_list_favorite_groups 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 vrchat_list_favorite_groups. 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.
vrchat_list_favorite_groups is provided by the VRChat MCP Server MCP server (sawa-zen/vrchat-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 VRChat MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
5 VRChat MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.