List all custom emojis in the server, including name, ID, animated status, URL, creation date, and whether they require colons.
AI agents call list_emojis 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 is a pure read operation that queries and returns information about server emojis. It has no capability to create, modify, delete, or execute actions. The blast radius of an AI agent calling this tool is minimal—it simply discovers existing emoji metadata without affecting Discord server state.
From the tool's definition Tool description explicitly states it 'List[s] all custom emojis in the server' and retrieves metadata (name, ID, animated status, URL, creation date, colons requirement) without any modification, deletion, or side effects.
Documented attack patterns abuse exactly the kind of access list_emojis 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 list_emojis:
{
"version": "1",
"default": "deny",
"tools": {
"list_emojis": {}
}
}list_emojis is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all custom emojis in the server, including name, ID, animated status, URL, creation date, and whether they require colons. 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 list_emojis: 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.
list_emojis 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 list_emojis 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 list_emojis. 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.
list_emojis 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.