AI agents call get_protocol_metrics to retrieve information from Usdd Test 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 aggregated protocol metrics from website data. It performs no write operations, does not execute code or commands, does not delete data, and involves no financial transactions. It is a straightforward read/query operation with no reversible or irreversible modifications.
From the tool's definition Tool name 'get_protocol_metrics' and description 'Get aggregated protocol metrics from website data (mainnet)' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get aggregated protocol metrics from website data (mainnet). It is categorised as a Read tool in the Usdd Test MCP Server, which means it retrieves data without modifying state.
Register the Usdd Test MCP server in PolicyLayer and add a rule for get_protocol_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 Usdd Test. Nothing to install.
get_protocol_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_protocol_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_protocol_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_protocol_metrics is provided by the Usdd Test MCP server (mcp-server-usdd-test). 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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