# fetchMostPopularItems

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

Agent View of the PolicyLayer registry record for `fetchMostPopularItems`. HTML page: https://policylayer.com/tools/firebase-genkit/fetchmostpopularitems

## Facts

- Tool: `fetchMostPopularItems`
- Server: Genkit MCP (`genkit-ai/genkit`) — https://policylayer.com/tools/firebase-genkit.md
- Homepage: https://github.com/genkit-ai/genkit
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "fetchMostPopularItems",
    "arguments": {}
  }
}
```

## 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 own 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."

## Use case

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.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Genkit MCP:

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

## Other tools on Genkit MCP (71)

- `removeTask` — Destructive — https://policylayer.com/tools/firebase-genkit/removetask.md
- `characterGenerator` — Execute — https://policylayer.com/tools/firebase-genkit/charactergenerator.md
- `delegate_to_coder` — Execute — https://policylayer.com/tools/firebase-genkit/delegate-to-coder.md
- `delegate_to_researcher` — Execute — https://policylayer.com/tools/firebase-genkit/delegate-to-researcher.md
- `run_flow` — Execute — https://policylayer.com/tools/firebase-genkit/run-flow.md
- `run_shell` — Execute — https://policylayer.com/tools/firebase-genkit/run-shell.md
- `screenshot` — Execute — https://policylayer.com/tools/firebase-genkit/screenshot.md
- `slowWork` — Execute — https://policylayer.com/tools/firebase-genkit/slowwork.md
- `start_runtime` — Execute — https://policylayer.com/tools/firebase-genkit/start-runtime.md
- `transferToAgent` — Execute — https://policylayer.com/tools/firebase-genkit/transfertoagent.md
- `use_skill` — Execute — https://policylayer.com/tools/firebase-genkit/use-skill.md
- `processPayment` — Financial — https://policylayer.com/tools/firebase-genkit/processpayment.md
- `request_transfer` — Financial — https://policylayer.com/tools/firebase-genkit/request-transfer.md
- `reservationTool` — Financial — https://policylayer.com/tools/firebase-genkit/reservationtool.md
- `transferMoney` — Financial — https://policylayer.com/tools/firebase-genkit/transfermoney.md
- `add` — Other — https://policylayer.com/tools/firebase-genkit/add.md
- `askQuestion` — Other — https://policylayer.com/tools/firebase-genkit/askquestion.md
- `datePicker` — Other — https://policylayer.com/tools/firebase-genkit/datepicker.md
- `error_tool` — Other — https://policylayer.com/tools/firebase-genkit/error-tool.md
- `exitTool` — Other — https://policylayer.com/tools/firebase-genkit/exittool.md
- `gablorken` — Other — https://policylayer.com/tools/firebase-genkit/gablorken.md
- `test_http` — Other — https://policylayer.com/tools/firebase-genkit/test-http.md
- `account_record` — Read — https://policylayer.com/tools/firebase-genkit/account-record.md
- `ask_user` — Read — https://policylayer.com/tools/firebase-genkit/ask-user.md
- `celsiusToFahrenheit` — Read — https://policylayer.com/tools/firebase-genkit/celsiustofahrenheit.md
- `confirmBooking` — Read — https://policylayer.com/tools/firebase-genkit/confirmbooking.md
- `current_weather` — Read — https://policylayer.com/tools/firebase-genkit/current-weather.md
- `dailySpecial` — Read — https://policylayer.com/tools/firebase-genkit/dailyspecial.md
- `dynamicGablorkenTool` — Read — https://policylayer.com/tools/firebase-genkit/dynamicgablorkentool.md
- `echo_meta_tool` — Read — https://policylayer.com/tools/firebase-genkit/echo-meta-tool.md
- …and 41 more: https://policylayer.com/tools/firebase-genkit.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=firebase-genkit · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/firebase-genkit