import_parquet_to_table

THE RISK

Medium Risk

Why import_parquet_to_table needs a policy

The tool name strongly suggests importing external data (Parquet format) into a database table. This is a reversible write operation that modifies data state but does not delete or destroy existing records. The empty description limits confidence, but the naming convention combined with sibling tools on an AWS server (which includes data management and policy operations) supports classification as Write.

From the tool's definition Tool name 'import_parquet_to_table' indicates data ingestion/loading into a table, which is a write operation. Description is empty, reducing confidence.

Documented attack patterns abuse exactly the kind of access import_parquet_to_table gives an agent:

POLICY

How to control import_parquet_to_table

PolicyLayer is an MCP gateway — it sits between your AI agents and AWS, and nothing reaches the server without passing your rules. This is the rule we recommend for import_parquet_to_table:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "import_parquet_to_table": {
      "limits": [
        {
          "counter": "import_parquet_to_table_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

import_parquet_to_table stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register AWS — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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FAQ

Questions about import_parquet_to_table

What does the import_parquet_to_table tool do? +

import_parquet_to_table. It is categorised as a Write tool in the AWS MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on import_parquet_to_table? +

Register the AWS MCP server in PolicyLayer and add a rule for import_parquet_to_table: 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 AWS. Nothing to install.

What risk level is import_parquet_to_table? +

import_parquet_to_table is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit import_parquet_to_table? +

Yes. Add a rate_limit block to the import_parquet_to_table 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.

How do I block import_parquet_to_table completely? +

Set action: deny in the PolicyLayer policy for import_parquet_to_table. 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.

What MCP server provides import_parquet_to_table? +

import_parquet_to_table is provided by the AWS MCP server (@awslabs/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every AWS tool call.

Start from AWS, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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