fetchMostPopularItems

Fetches the most popular items in the catalog (top 3)

SERVERGenkit MCP SOURCEgenkit-ai/genkit

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/firebase-genkit/fetchmostpopularitems.md

WHAT IT DOES

What fetchMostPopularItems does on Genkit MCP

AI agents call fetchMostPopularItems to retrieve information from Genkit MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why fetchMostPopularItems is rated Low

This tool performs a read-only query of catalog data and returns results without side effects. The blast radius of misuse is minimal, as an agent cannot cause harm by fetching popular items multiple times or with different parameters. The operation is safely categorized as Read with low severity.

From the tool's definition The tool description explicitly states it 'Fetches the most popular items in the catalog' - a data retrieval operation with no mention of modification, deletion, or execution of external actions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs fetchMostPopularItems safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Genkit MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For fetchMostPopularItems, this is the rule to start with:

fetchMostPopularItems Allowed

fetchMostPopularItems is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Genkit MCP, apply this rule, and every fetchMostPopularItems call is checked against it from then on.

FAQ

Questions about fetchMostPopularItems

What does the fetchMostPopularItems tool do? +

Fetches the most popular items in the catalog (top 3). It is categorised as a Read tool in the Genkit MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on fetchMostPopularItems? +

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

What risk level is fetchMostPopularItems? +

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

Can I rate-limit fetchMostPopularItems? +

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

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

fetchMostPopularItems is provided by the Genkit MCP server (genkit-ai/genkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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