fetch_component_folders

THE RISK

Low Risk

Why fetch_component_folders needs a policy

This tool only retrieves/queries component folder data with no side effects. It does not create, modify, delete, or execute any operations. The presence of 'optional filtering' suggests query parameters, not mutation capabilities. This is a straightforward data retrieval operation with minimal risk if misused by an AI agent.

From the tool's definition Tool name is 'fetch_component_folders' and description states it 'Retrieves all component folders' with optional filtering. The verb 'retrieves' and lack of any modification language indicates a read-only query operation.

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

POLICY

How to control fetch_component_folders

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

policy.json

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

fetch_component_folders 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 Storyblok 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.

CAP THIS TOOL →

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EXPLORE

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Go deeper

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 →

FAQ

Questions about fetch_component_folders

What does the fetch_component_folders tool do? +

Retrieves all component folders (non-paginated), with optional filtering. It is categorised as a Read tool in the Storyblok MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on fetch_component_folders? +

Register the Storyblok MCP Server MCP server in PolicyLayer and add a rule for fetch_component_folders: 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 Storyblok MCP Server. Nothing to install.

What risk level is fetch_component_folders? +

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

Can I rate-limit fetch_component_folders? +

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

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

fetch_component_folders is provided by the Storyblok MCP Server MCP server (kiran1689/storyblok-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 Storyblok MCP Server tool call.

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

CHECK YOUR STACK →