List all available datasets with their schemas
AI agents call list_datasets to retrieve information from MCP Data Catalog without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about available datasets without querying data, executing code, or modifying anything. It is a read-only operation that provides schema information to support exploration of what data is available. The blast radius is minimal: an AI agent could only discover what datasets exist, not access their contents or perform any side effects. Severity is low due to the purely informational nature.
From the tool's definition Tool name is 'list_datasets' and description states it 'List all available datasets with their schemas' — a pure enumeration operation with no modification or execution.
Attacks that exploit this kind of access
List all available datasets with their schemas. It is categorised as a Read tool in the MCP Data Catalog MCP Server, which means it retrieves data without modifying state.
Register the MCP Data Catalog MCP server in PolicyLayer and add a rule for list_datasets: 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 MCP Data Catalog. Nothing to install.
list_datasets 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 list_datasets 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 list_datasets. 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.
list_datasets is provided by the MCP Data Catalog MCP server (mikeored/catalog-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.
Teams ship this data inside their own products. See what a licence covers →