Query contacts with advanced filtering, searching, and pagination (Sidemail API). If the query parameter is empty or not provided, it lists all contacts. The contact data are returned sorted by creation date, with the most recent contact appearing first.
AI agents call query-contacts 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 retrieves contact data from Sidemail with various filtering and search capabilities, but does not create, modify, or delete any data. It is a pure data retrieval operation with no side effects. Severity is low because querying existing contact records poses minimal risk even if misused by an AI agent—it can only reveal data already in the system.
From the tool's definition Tool name 'query-contacts' and description explicitly states it 'Query contacts with advanced filtering, searching, and pagination' and 'lists all contacts'.
Attacks that exploit this kind of access
Query contacts with advanced filtering, searching, and pagination (Sidemail API). If the query parameter is empty or not provided, it lists all contacts. The contact data are returned sorted by creation date, with the most recent contact 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-contacts: 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-contacts 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-contacts 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-contacts. 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-contacts 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.
query-contacts is one line of Sidemail MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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