preview_embed_message

SERVERGuildControl MCP SOURCEguildctl

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/app-lasers-guildcontrol-discord/preview-embed-message.md

WHAT IT DOES

What preview_embed_message does on GuildControl MCP

AI agents call preview_embed_message to retrieve information from GuildControl MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why preview_embed_message is rated Low

Tool performs local validation and analysis only, produces no side effects, no data modification or deletion.

From the tool's definition Validate and normalize locally. Returns exact normalized content without contacting Discord or persisting.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs preview_embed_message safely

PolicyLayer is an MCP gateway: it sits between your AI agents and GuildControl MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For preview_embed_message, this is the rule to start with:

preview_embed_message Allowed

preview_embed_message is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "preview_embed_message": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect GuildControl MCP, apply this rule, and every preview_embed_message call is checked against it from then on.

FAQ

Questions about preview_embed_message

What does the preview_embed_message tool do? +

Validate and normalize one bounded static rich-embed presentation locally. Returns exact normalized plain content and embeds, a deterministic outline, embed and field counts, aggregate Unicode length, serialized byte size, notification projection, and safety warnings without contacting Discord or persisting content. Plain-content HTTP URLs, embed URL and remote-asset fields, attachments, providers, and arbitrary embed types are unsupported; ordinary markdown links inside embed text are allowed but never fetched by the connector. It is categorised as a Read tool in the GuildControl MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on preview_embed_message? +

Register the GuildControl MCP server in PolicyLayer and add a rule for preview_embed_message: 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 GuildControl MCP. Nothing to install.

What risk level is preview_embed_message? +

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

Can I rate-limit preview_embed_message? +

Yes. Add a rate_limit block to the preview_embed_message 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 preview_embed_message completely? +

Set action: deny in the PolicyLayer policy for preview_embed_message. 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 preview_embed_message? +

preview_embed_message is provided by the GuildControl MCP server (guildctl). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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