# retail_media_primer

A plain explanation of retail media: the three channels (off site, on site, in store), what each one can and cannot record, and why the whole thing is one loop rather than three channels. Useful even if you have no interest in Gus.

Agent View of the PolicyLayer registry record for `retail_media_primer`. HTML page: https://policylayer.com/tools/com-ghostavo-retail-media-measurement/retail-media-primer

## Facts

- Tool: `retail_media_primer`
- Server: Gus Dantas · retail media measurement (`https://mcp.ghostavo.com/mcp`) — https://policylayer.com/tools/com-ghostavo-retail-media-measurement.md
- Homepage: https://github.com/https://mcp.ghostavo.com/mcp
- Risk category: Read (Low risk)
- Registry record: grade C, identity unverified
- Server auth posture: open
- Server CORS policy: *
- 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": "retail_media_primer",
    "arguments": {}
  }
}
```

## Why retail_media_primer is rated Low

Even though retail_media_primer only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

## Use case

AI agents call retail_media_primer to retrieve information from Gus Dantas · retail media measurement 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 Gus Dantas · retail media measurement:

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

## Other tools on Gus Dantas · retail media measurement (3)

- `ask_gus` — Read — https://policylayer.com/tools/com-ghostavo-retail-media-measurement/ask-gus.md
- `gus_profile` — Read — https://policylayer.com/tools/com-ghostavo-retail-media-measurement/gus-profile.md
- `leave_a_note` — Write — https://policylayer.com/tools/com-ghostavo-retail-media-measurement/leave-a-note.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-ghostavo-retail-media-measurement · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-ghostavo-retail-media-measurement