Get account-level metrics. metric_set: 'active-basins' or 'account-ops'.
AI agents call account_metrics to retrieve information from S2 StreamStore 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 and queries account-level metrics without modifying, deleting, or executing any operations. It has no side effects and poses minimal security risk if misused by an AI agent—at worst, it could leak non-sensitive account statistics. This is a straightforward Read operation.
From the tool's definition Tool name 'account_metrics' and description 'Get account-level metrics' indicate a retrieval operation with no side effects. The metric_set parameter accepts 'active-basins' or 'account-ops', both of which are query/reporting operations.
Attacks that exploit this kind of access
Get account-level metrics. metric_set: 'active-basins' or 'account-ops'. It is categorised as a Read tool in the S2 StreamStore MCP Server MCP Server, which means it retrieves data without modifying state.
Register the S2 StreamStore MCP Server MCP server in PolicyLayer and add a rule for account_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 S2 StreamStore MCP Server. Nothing to install.
account_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 account_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 account_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.
account_metrics is provided by the S2 StreamStore MCP Server MCP server (s2-streamstore/mcp). 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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