Summarize a Parquet file by reporting its number of rows and columns.
AI agents call summarize_parquet_file to retrieve information from WorldBank GDP & Employment MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool reads metadata from a Parquet file (row and column counts) and returns a summary. This is a pure read operation with no side effects, reversible modifications, code execution, data destruction, or financial impact. The low severity reflects minimal blast radius—miscalling it only returns metadata about file structure.
From the tool's definition Tool performs data retrieval and analysis operations: 'Summarize a Parquet file by reporting its number of rows and columns.' No modification, deletion, execution of arbitrary code, or financial operations are described.
Attacks that exploit this kind of access
Summarize a Parquet file by reporting its number of rows and columns. It is categorised as a Read tool in the WorldBank GDP & Employment MCP Server MCP Server, which means it retrieves data without modifying state.
Register the WorldBank GDP & Employment MCP Server MCP server in PolicyLayer and add a rule for summarize_parquet_file: 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 WorldBank GDP & Employment MCP Server. Nothing to install.
summarize_parquet_file 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 summarize_parquet_file 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 summarize_parquet_file. 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.
summarize_parquet_file is provided by the WorldBank GDP & Employment MCP Server MCP server (moderator11/mcpserver-gdp). 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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