GetSupportedFileTypes

WHAT IT DOES

What GetSupportedFileTypes does on Amazon Data Processing MCP Server

AI agents call GetSupportedFileTypes to retrieve information from Amazon Data Processing MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why GetSupportedFileTypes needs a policy

This tool appears to retrieve a static list of supported file types from the AWS data processing service—a read-only informational query. No side effects are indicated. The empty description reduces confidence slightly, but the naming convention strongly suggests a harmless enumeration of metadata.

From the tool's definition Tool name 'GetSupportedFileTypes' indicates a query/retrieval operation with no parameters that would modify or execute code. The pattern 'Get[Resource]' is characteristic of read-only data retrieval.

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

POLICY

How to control GetSupportedFileTypes

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "GetSupportedFileTypes": {}
  }
}

GetSupportedFileTypes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Amazon Data Processing MCP Server — 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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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about GetSupportedFileTypes

What does the GetSupportedFileTypes tool do? +

GetSupportedFileTypes. It is categorised as a Read tool in the Amazon Data Processing MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on GetSupportedFileTypes? +

Register the Amazon Data Processing MCP Server MCP server in PolicyLayer and add a rule for GetSupportedFileTypes: 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 Data Processing MCP Server. Nothing to install.

What risk level is GetSupportedFileTypes? +

GetSupportedFileTypes is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit GetSupportedFileTypes? +

Yes. Add a rate_limit block to the GetSupportedFileTypes 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 GetSupportedFileTypes completely? +

Set action: deny in the PolicyLayer policy for GetSupportedFileTypes. 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 GetSupportedFileTypes? +

GetSupportedFileTypes is provided by the Amazon Data Processing MCP Server MCP server (awslabs.aws-dataprocessing-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Amazon Data Processing MCP Server tool call.

Start from Amazon Data Processing 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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