retrieve_single_datasource_entry

THE RISK

Low Risk

Why retrieve_single_datasource_entry needs a policy

This tool performs data retrieval without modifying, deleting, or executing any operations. It queries a single datasource entry from the Storyblok Management API. The blast radius is minimal—an AI agent cannot cause harm by retrieving data, though it could potentially expose sensitive information if datasource entries contain confidential content. This is a standard Read operation.

From the tool's definition Tool name 'retrieve_single_datasource_entry' and description states it 'Retrieves a single datasource entry' — a read-only operation with no side effects.

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

POLICY

How to control retrieve_single_datasource_entry

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 retrieve_single_datasource_entry:

policy.json

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

retrieve_single_datasource_entry 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

Related tools and policies

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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 retrieve_single_datasource_entry

What does the retrieve_single_datasource_entry tool do? +

Retrieves a single datasource entry via the Storyblok Management API. 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 retrieve_single_datasource_entry? +

Register the Storyblok MCP Server MCP server in PolicyLayer and add a rule for retrieve_single_datasource_entry: 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 retrieve_single_datasource_entry? +

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

Can I rate-limit retrieve_single_datasource_entry? +

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

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

retrieve_single_datasource_entry 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 →