email_reply_message
Reply to an email message. Reads the original message to set proper In-Reply-To and References headers.
This record as markdown: /tools/io-github-alifanov-scopegate/email-reply-message.md
What email_reply_message does on ScopeGate
AI agents use email_reply_message to create or update resources in ScopeGate, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ScopeGate environment.
Why email_reply_message is rated Medium
This tool creates new email messages (reversible via deletion/unsend if supported, but the primary effect is message creation). It modifies email state by adding replies to threads. It is not destructive (emails aren't deleted), not financial, and not execute-arbitrary-code.
From the tool's definition Tool description states 'Reply to an email message' which is a write operation that creates new email content and sends it. The mention of 'Reads the original message' is auxiliary to the primary action of composing and sending a reply.
Attacks that exploit this kind of access
The rule that runs email_reply_message safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ScopeGate, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For email_reply_message, this is the rule to start with:
email_reply_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 ScopeGate, apply this rule, and every email_reply_message call is checked against it from then on.
Questions about email_reply_message
Reply to an email message. Reads the original message to set proper In-Reply-To and References headers. It is categorised as a Write tool in the ScopeGate MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ScopeGate MCP server in PolicyLayer and add a rule for email_reply_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 ScopeGate. Nothing to install.
email_reply_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 email_reply_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 email_reply_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.
email_reply_message is provided by the ScopeGate MCP server (https://mcp.scopegate.cloud/{api_key}). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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