# get_price

Look up the price of a product by SKU.

Agent View of the PolicyLayer registry record for `get_price`. HTML page: https://policylayer.com/tools/a2a-demos/get-price

## Facts

- Tool: `get_price`
- Server: A2a Demos (`capiscio/a2a-demos`) — https://policylayer.com/tools/a2a-demos.md
- Homepage: https://github.com/capiscio/a2a-demos
- Risk category: Read (Low risk)
- Registry record: grade D, 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": "get_price",
    "arguments": {}
  }
}
```

## Why get_price is rated Low

This tool retrieves pricing information based on a product identifier (SKU). It performs a lookup/query without modifying data, executing code, or causing irreversible changes. The sibling tools (cancel_all_orders, place_order) are more sensitive, but this tool itself is a straightforward read operation with minimal risk even if called repeatedly or with unexpected SKUs.

From the tool's own definition: "Tool name is 'get_price' and description states it will 'Look up the price of a product by SKU' — a pure query operation with no side effects."

## Use case

AI agents call get_price to retrieve information from A2a Demos 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 A2a Demos:

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

## Other tools on A2a Demos (2)

- `cancel_all_orders` — Destructive — https://policylayer.com/tools/a2a-demos/cancel-all-orders.md
- `place_order` — Financial — https://policylayer.com/tools/a2a-demos/place-order.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=a2a-demos · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a2a-demos