Query emails with filtering and pagination (Sidemail API). If the query parameter is empty or not provided, it lists all emails. The email data are returned sorted by creation date, with the most recent emails appearing first.
AI agents call query-emails to retrieve information from Sidemail MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves email records with optional filtering and pagination. It has no side effects: it does not create, modify, delete, or execute any operations. The most recent emails are returned sorted by creation date, but this is a presentation concern, not a mutation.
From the tool's definition Tool description states 'Query emails with filtering and pagination' and 'lists all emails' — retrieves email data without modifying or deleting it. The sorting and filtering are read-only operations.
Attacks that exploit this kind of access
Query emails with filtering and pagination (Sidemail API). If the query parameter is empty or not provided, it lists all emails. The email data are returned sorted by creation date, with the most recent emails appearing first. It is categorised as a Read tool in the Sidemail MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Sidemail MCP Server MCP server in PolicyLayer and add a rule for query-emails: 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 Sidemail MCP Server. Nothing to install.
query-emails 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 query-emails 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 query-emails. 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.
query-emails is provided by the Sidemail MCP Server MCP server (sidemail/sidemail-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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