AI agents call get_metric_metadata to retrieve information from Amazon Redshift MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears designed to fetch metric metadata (descriptive information about metrics) from Redshift, which is a retrieval operation with no side effects. Even if metadata retrieval could expose sensitive information structure, it is fundamentally a Read operation. Confidence is reduced from high to 0.75 due to the empty description, which prevents full confirmation of the tool's precise behavior and scope.
From the tool's definition Tool name 'get_metric_metadata' indicates retrieval of metadata about metrics. The verb 'get' is a read operation that queries and retrieves information without modifying state.
Documented attack patterns abuse exactly the kind of access get_metric_metadata gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon Redshift MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_metric_metadata:
{
"version": "1",
"default": "deny",
"tools": {
"get_metric_metadata": {}
}
} get_metric_metadata is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_metric_metadata. It is categorised as a Read tool in the Amazon Redshift MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Amazon Redshift MCP Server MCP server in PolicyLayer and add a rule for get_metric_metadata: 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 Amazon Redshift MCP Server. Nothing to install.
get_metric_metadata 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_metric_metadata 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_metric_metadata. 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_metric_metadata is provided by the Amazon Redshift MCP Server MCP server (awslabs.redshift-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Amazon Redshift MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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805 Amazon Redshift MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.