Low Risk

list_archived_threads

List archived threads in a channel. Can list both public and private archived threads.

How to control list_archived_threads ↓

What list_archived_threads does on Discord

AI agents call list_archived_threads 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.

Low Risk

Why list_archived_threads needs a policy

This tool retrieves and displays archived thread information from a Discord channel without modifying, deleting, or executing any actions. It is a pure data retrieval operation with minimal blast radius if misused by an AI agent—at worst, the agent learns about archived discussions. No destructive, financial, or execute-level operations are involved.

From the tool's definition Tool name 'list_archived_threads' and description 'List archived threads in a channel' indicate a retrieval operation with no side effects. The verb 'list' is a classic read operation that queries existing data.

Documented attack patterns abuse exactly the kind of access list_archived_threads gives an agent:

How to control list_archived_threads

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_archived_threads:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_archived_threads": {}
  }
}

list_archived_threads is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Discord — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about list_archived_threads

What does the list_archived_threads tool do? +

List archived threads in a channel. Can list both public and private archived threads. It is categorised as a Read tool in the Discord MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_archived_threads? +

Register the Discord MCP server in PolicyLayer and add a rule for list_archived_threads: 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.

What risk level is list_archived_threads? +

list_archived_threads is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_archived_threads? +

Yes. Add a rate_limit block to the list_archived_threads 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.

How do I block list_archived_threads completely? +

Set action: deny in the PolicyLayer policy for list_archived_threads. 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.

What MCP server provides list_archived_threads? +

list_archived_threads 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.

Enforce policy on every Discord tool call.

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.

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