get_email_performance_metrics
Get email performance monitoring metrics
This record as markdown: /tools/cbrown35-20i-mcp/get-email-performance-metrics.md
What get_email_performance_metrics does on 20i MCP Server
AI agents call get_email_performance_metrics to retrieve information from 20i MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why get_email_performance_metrics is rated Low
This tool retrieves performance data about email services. It queries existing metrics without creating, modifying, deleting, or executing any operations. The blast radius of misuse is minimal—an attacker could only view performance statistics, not access credentials, modify configurations, delete data, or execute commands. Classification as Read with low severity is appropriate.
From the tool's definition Tool name 'get_email_performance_metrics' and description 'Get email performance monitoring metrics' indicate data retrieval only. The verb 'get' and 'monitoring metrics' confirm read-only operation with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs get_email_performance_metrics safely
PolicyLayer is an MCP gateway: it sits between your AI agents and 20i MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_email_performance_metrics, this is the rule to start with:
get_email_performance_metrics is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect 20i MCP Server, apply this rule, and every get_email_performance_metrics call is checked against it from then on.
Questions about get_email_performance_metrics
Get email performance monitoring metrics. It is categorised as a Read tool in the 20i MCP Server MCP Server, which means it retrieves data without modifying state.
Register the 20i MCP Server MCP server in PolicyLayer and add a rule for get_email_performance_metrics: 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 20i MCP Server. Nothing to install.
get_email_performance_metrics 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 get_email_performance_metrics 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 get_email_performance_metrics. 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.
get_email_performance_metrics is provided by the 20i MCP Server MCP server (cbrown35/20i-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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