Query a dataset with optional filtering, field selection, and limits
AI agents call query_dataset 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 and filters data from CSV datasets without modifying, deleting, or executing external operations. The filtering and field selection are read-only projections. The 'limits' parameter further constrains scope. As a sibling to 'describe_dataset' and 'list_datasets' (both clearly Read operations), this fits the same pattern. Low severity due to read-only nature and constrained dataset access.
From the tool's definition Tool description states 'Query a dataset with optional filtering, field selection, and limits' — core read operations. Server description emphasizes 'access to tabular datasets' with 'list, describe, and query data' as primary functions.
Attacks that exploit this kind of access
Query a dataset with optional filtering, field selection, and limits. 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 query_dataset: 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.
query_dataset 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 query_dataset 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 query_dataset. 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.
query_dataset 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 →