execute_attachment_message
Send one reviewed local file after a fresh byte-matching plan, signed interactive approval, shared anti-spam guard, durable one-shot operation-key reservation, pending content-free audit records, one non-retried multipart POST, and exact GET readback. Never accepts URLs or base64, retries, rolls ...
This record as markdown: /tools/app-lasers-guildcontrol-discord/execute-attachment-message.md
What execute_attachment_message does on GuildControl MCP
AI agents use execute_attachment_message to create or update resources in GuildControl MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GuildControl MCP environment.
Why execute_attachment_message is rated Medium
Sends a file to Discord via multipart POST; creates a message with attachment irreversibly.
From the tool's definition Send one reviewed local file...one non-retried multipart POST
Attacks that exploit this kind of access
The rule that runs execute_attachment_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 execute_attachment_message, this is the rule to start with:
execute_attachment_message stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect GuildControl MCP, apply this rule, and every execute_attachment_message call is checked against it from then on.
Questions about execute_attachment_message
Send one reviewed local file after a fresh byte-matching plan, signed interactive approval, shared anti-spam guard, durable one-shot operation-key reservation, pending content-free audit records, one non-retried multipart POST, and exact GET readback. Never accepts URLs or base64, retries, rolls back, or returns an attachment URL. It is categorised as a Write tool in the GuildControl MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the GuildControl MCP server in PolicyLayer and add a rule for execute_attachment_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.
execute_attachment_message is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the execute_attachment_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.
Set action: deny in the PolicyLayer policy for execute_attachment_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.
execute_attachment_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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