fetch_asset_folders

THE RISK

Low Risk

Why fetch_asset_folders needs a policy

The verb 'fetch' universally indicates data retrieval. Even without a description, this tool clearly retrieves asset folder metadata from Storyblok CMS with no side effects. This is a classic Read category operation—no data is modified, deleted, or executed.

From the tool's definition Tool name 'fetch_asset_folders' contains the verb 'fetch', which is a retrieval operation. The tool description is empty, but the naming pattern aligns with read operations that query data without side effects.

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

POLICY

How to control fetch_asset_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_asset_folders:

policy.json

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

fetch_asset_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 →

Free to start. No card required.

EXPLORE

Related tools and policies

More Storyblok MCP Server tools

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All 115 Storyblok MCP Server tools →

Read tools on other servers

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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 fetch_asset_folders

What does the fetch_asset_folders tool do? +

fetch_asset_folders. 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_asset_folders? +

Register the Storyblok MCP Server MCP server in PolicyLayer and add a rule for fetch_asset_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_asset_folders? +

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

Can I rate-limit fetch_asset_folders? +

Yes. Add a rate_limit block to the fetch_asset_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_asset_folders completely? +

Set action: deny in the PolicyLayer policy for fetch_asset_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_asset_folders? +

fetch_asset_folders is provided by the Storyblok MCP Server MCP server (arjuncodess/storyblok-mcp). 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 →