# compare_products

Compare specific products side by side by slug within a category (e.g. ['apple-iphone-16-pro','samsung-galaxy-s25-ultra'] in 'smartphones'). Returns full provenanced spec records plus a notFound list and the category's comparable specKeys, so an agent can line up the same attributes across products.

Agent View of the PolicyLayer registry record for `compare_products`. HTML page: https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/compare-products

## Facts

- Tool: `compare_products`
- Server: The Front Desk Review (`https://mcp.frontdeskreview.com/mcp`) — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data.md
- Homepage: https://github.com/AlexandDunk/frontdesk-data
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 2 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `slugs` | array | yes |  |
| `category` | string | yes | Product category slug from list_product_categories. |

Parameters from the server's own tool schema.

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "compare_products",
    "arguments": {
      "slugs": [],
      "category": "<category>"
    }
  }
}
```

## Why compare_products is rated Low

This tool queries an existing product database and returns comparative information without any side effects. It performs a read-only operation that retrieves structured product specification data for comparison purposes. The low severity reflects that misuse would only expose product information without enabling financial, destructive, or system-level harm.

From the tool's own definition: "The tool 'compare_products' retrieves and returns 'full provenanced spec records' and 'comparable specKeys' for products."

## Use case

AI agents call compare_products to retrieve information from The Front Desk Review 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 The Front Desk Review:

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

## Other tools on The Front Desk Review (18)

- `compare` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/compare.md
- `find_best` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/find-best.md
- `find_products` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/find-products.md
- `get_benchmark` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/get-benchmark.md
- `get_cost_decoder` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/get-cost-decoder.md
- `get_independent_test_coverage` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/get-independent-test-coverage.md
- `get_normalized_pricing` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/get-normalized-pricing.md
- `get_price_history` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/get-price-history.md
- `list_cost_decoders` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/list-cost-decoders.md
- `list_coverage` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/list-coverage.md
- `list_product_categories` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/list-product-categories.md
- `list_sections` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/list-sections.md
- `most_volatile_in_category` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/most-volatile-in-category.md
- `price_movers` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/price-movers.md
- `search_products` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/search-products.md
- `search_vendors` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/search-vendors.md
- `volatility_for_entity` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/volatility-for-entity.md
- `whats_changed` — Read — https://policylayer.com/tools/com-frontdeskreview-front-desk-review-data/whats-changed.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=com-frontdeskreview-front-desk-review-data · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-frontdeskreview-front-desk-review-data