Get the server vanity URL if the server has the VANITY_URL feature.
AI agents call get_vanity_url to retrieve information from Discord without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves server configuration information (vanity URL) that is already publicly or internally known. It does not create, modify, delete, execute code, or trigger external operations. This is a straightforward read operation with no blast radius if misused by an agent—at worst, an AI would learn something already known about the server's public configuration.
From the tool's definition Tool name 'get_vanity_url' and description 'Get the server vanity URL' indicate retrieval of existing configuration data without modification or side effects.
Documented attack patterns abuse exactly the kind of access get_vanity_url gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Discord, and nothing reaches the server without passing your rules. This is the rule we recommend for get_vanity_url:
{
"version": "1",
"default": "deny",
"tools": {
"get_vanity_url": {}
}
}get_vanity_url is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the server vanity URL if the server has the VANITY_URL feature. It is categorised as a Read tool in the Discord MCP Server, which means it retrieves data without modifying state.
Register the Discord MCP server in PolicyLayer and add a rule for get_vanity_url: 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 Discord. Nothing to install.
get_vanity_url 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_vanity_url 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_vanity_url. 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_vanity_url is provided by the Discord MCP server (hardheadhackerhead/discord-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Discord, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
139 Discord tools catalogued and risk-classified — across an index of 43,000+ MCP servers.