# A2A Retailmedia — the agentic retail-media hub for grocery (remote · mcp.a2a-retailmedia.ai)

Connecting grocery retail to 350k makers for media buys.

- Trust score: 77/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `mcp.a2a-retailmedia.ai`: 77/100 (this document), [markdown](https://verifymcp.io/servers/greencore-solutions-a2a-retailmedia/mcp.md), [page](https://verifymcp.io/servers/greencore-solutions-a2a-retailmedia/mcp)

## Channel facts

- Endpoint: `https://mcp.a2a-retailmedia.ai/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.2`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-23.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 63/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 1535 tokens (~80/item across 19 items; 19 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 60/100
  - Stability observed for 18 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 19 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 20 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the A2A Retailmedia — the agentic retail-media hub for grocery MCP server?

A2A Retailmedia — the agentic retail-media hub for grocery is a hosted endpoint at https://mcp.a2a-retailmedia.ai/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http greencore-solutions-a2a-retailmedia 'https://mcp.a2a-retailmedia.ai/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "greencore-solutions-a2a-retailmedia": {
      "url": "https://mcp.a2a-retailmedia.ai/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "greencore-solutions-a2a-retailmedia": {
      "type": "http",
      "url": "https://mcp.a2a-retailmedia.ai/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.greencore-solutions-a2a-retailmedia]
url = "https://mcp.a2a-retailmedia.ai/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "greencore-solutions-a2a-retailmedia": {
      "type": "remote",
      "url": "https://mcp.a2a-retailmedia.ai/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add greencore-solutions-a2a-retailmedia --url 'https://mcp.a2a-retailmedia.ai/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  greencore-solutions-a2a-retailmedia:
    url: "https://mcp.a2a-retailmedia.ai/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "greencore-solutions-a2a-retailmedia": {
      "Transport": "http",
      "Url": "https://mcp.a2a-retailmedia.ai/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add greencore-solutions-a2a-retailmedia -t streamable-http -u 'https://mcp.a2a-retailmedia.ai/mcp'
```

### Other

```json
{
  "mcpServers": {
    "greencore-solutions-a2a-retailmedia": {
      "type": "http",
      "url": "https://mcp.a2a-retailmedia.ai/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-22 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-20 (score 76, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “get_banner_card” rewrote its description, which is the text the model reads
- [functional] Schema quality: good → fair
- [functional] Server version: 4.0.3 → 1.0.11

### 2026-10-19 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-17 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-16 (score 74, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “resolve_gtin” rewrote its description, which is the text the model reads

### 2026-10-15 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-13 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-10 (score 72, +3)

- [functional improvement] Stability: unverified → 0.17

## MCP tools (19)

### `resolve_jurisdiction` (~58 tokens)

Resolve Jurisdiction

Where is the media bought? Resolve a market (e.g. FR, UK, US, Japan) to one of the 20 markets on the record. UK is the label; GB is accepted.

Input parameters:

- `market` (string, required)

### `resolve_actor` (~48 tokens)

Resolve Actor

Who is asking? maker, brand_owner, agency, distributor or retailer_media_team (trade); auditor (read only). The consumer is never the counterparty.

Input parameters:

- `actor_class` (string, required)

### `gate_transaction` (~56 tokens)

Gate Transaction

The gate before a handshake: allow or deny for one market and one actor class. Returns a decision_id the handshake tools ask for. A deny is not charged.

Input parameters:

- `actor_class` (string, required)
- `market` (string, required)

### `find_makers` (~86 tokens)

Find Makers

Find the brand: makers on the grocery record of one market (node = one of the 20 markets). segment is taken as a lane where it names one (organic, free-from, plant-based, artisan, origin, premium). Read live from the A2A Grocery door.

Input parameters:

- `limit`
- `node`
- `region`
- `segment`

### `resolve_gtin` (~84 tokens)

Resolve Gtin

Product record from gtinfetch.ai (signed); hub layer: seat, market, claim, price, availability. Confirm the product is real: is this Global Trade Item Number (GTIN) well-formed, and is it on the grocery record, with its brand and maker. Read live from the A2A Grocery door.

Input parameters:

- `gtin` (string, required)

### `check_eligibility` (~72 tokens)

Check Eligibility

Confirm it is on the shelf: does the grocery record list this GTIN at this banner in this market? No listing, no media pitch. Read live from the A2A Grocery door.

Input parameters:

- `banner` (string, required)
- `country_iso` (string, required)
- `gtin` (string, required)

### `list_banners` (~79 tokens)

List Banners

Pick the banners: the grocery banners of one market with each one's media program (or "none listed") and card status. with_program=true returns only banners with a program listed.

Input parameters:

- `limit` (integer)
- `market` (string, required)
- `offset` (integer)
- `search`
- `with_program` (boolean)

### `get_banner_card` (~50 tokens)

Get Banner Card

The signed card of one banner and its status (listed · claimed · verified). banner = the banner's slug, id or name.

Input parameters:

- `banner` (string, required)
- `market` (string, required)

### `list_banner_cards` (~64 tokens)

List Banner Cards

The cards of one market, optionally by status (unclaimed, claimed, registered): banner, media program, status and the card's address.

Input parameters:

- `limit` (integer)
- `market` (string, required)
- `offset` (integer)
- `status`

### `list_packages` (~84 tokens)

List Packages

Match a package: what one banner's media program says it sells, in the program's own words, each tagged onsite, offsite or in-store. Offsite is tagged so it is never taken for a shelf slot. Empty where no program is listed — the agent stops.

Input parameters:

- `banner` (string, required)
- `decision_id`
- `market` (string, required)

### `quote_package` (~61 tokens)

Quote Package

Price it: returns where the banner's own media program publishes its rates or takes an enquiry. GSC never prices; a quote comes from the retailer's program.

Input parameters:

- `banner` (string, required)
- `decision_id`
- `market` (string, required)

### `find_buyer` (~52 tokens)

Find Buyer

Qualify the buyer: find a maker on the grocery record by name, with its own website where the record has one.

Input parameters:

- `decision_id`
- `maker` (string, required)
- `market`

### `submit_demand` (~147 tokens)

Submit Demand

Hand off: the packet — the maker, a budget a person has approved, one or more GTINs, a market and a list of banners — or a gap naming what is missing. Routes each banner by its card status: unclaimed is a referral, claimed goes to the retailer's media team, registered goes agent to agent. Settles at the door.

Input parameters:

- `banners` (array, required)
- `budget` (number, required)
- `budget_approved_by` (string, required)
- `contact` (string, required)
- `decision_id`
- `gtins` (array, required)
- `maker` (string, required)
- `market` (string, required)
- `note`

### `receive_demand` (~71 tokens)

Receive Demand

Retailer side: a registered program agent takes a qualified packet. Only a card in the registered state can receive; any other card is refused and nothing is charged.

Input parameters:

- `banner` (string, required)
- `decision_id`
- `handoff_id` (string, required)
- `market` (string, required)

### `a2a_handoff` (~45 tokens)

A2A Handoff

Hand to a person: the state of a handoff and its Navigator desk ticket, where the media program has no agent.

Input parameters:

- `handoff_id` (string, required)

### `pull_measurement` (~48 tokens)

Pull Measurement

Read the till: results of a campaign, returned by the retailer's program. Available only after the program returns a campaign id for a handoff.

Input parameters:

- `handoff_id` (string, required)

### `renew_package` (~70 tokens)

Renew Package

Renew: a prior quote id from the retailer's program and a new approved budget. Without a quote id from the program there is nothing to renew.

Input parameters:

- `budget` (number, required)
- `budget_approved_by` (string, required)
- `decision_id`
- `prior_quote_id` (string, required)

### `log_audit` (~36 tokens)

Log Audit

Write one audit line for a step of the chain; returns its id.

Input parameters:

- `detail`
- `event` (string, required)

### `enrol_maker` (~96 tokens)

Enrol Maker

Makers: be seen. Enrol a maker for media exposure in grocery: its name, its markets (one or more of the 20), the tick, and a contact a person can answer. Enrolment only — a handoff waits for a budget a person has approved.

Input parameters:

- `contact` (string, required)
- `maker` (string, required)
- `markets` (array, required)
- `media_exposure` (boolean, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/greencore-solutions-a2a-retailmedia/mcp#diagnostics

## Score history

- 2026-10-23: 77
- 2026-10-22: 77
- 2026-10-21: 76
- 2026-10-20: 76
- 2026-10-19: 76
- 2026-10-18: 75
- 2026-10-17: 75
- 2026-10-16: 74
- 2026-10-15: 74
- 2026-10-14: 73
- 2026-10-13: 73
- 2026-10-12: 72
- 2026-10-10: 72
- 2026-10-05: 69

## Common questions

### What is the A2A Retailmedia — the agentic retail-media hub for grocery MCP server?

A2A Retailmedia — the agentic retail-media hub for grocery is an MCP server listed in the public MCP registry as io.github.greencore-solutions/a2a-retailmedia. Connecting grocery retail to 350k makers for media buys. This page covers its hosted endpoint (https://mcp.a2a-retailmedia.ai/mcp).

### Is the A2A Retailmedia — the agentic retail-media hub for grocery MCP server safe to use?

A2A Retailmedia — the agentic retail-media hub for grocery scores 77 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the A2A Retailmedia — the agentic retail-media hub for grocery MCP server expose?

A2A Retailmedia — the agentic retail-media hub for grocery exposes 19 tools: resolve_jurisdiction, resolve_actor, gate_transaction, find_makers, resolve_gtin, and 14 more. Their descriptions and schemas cost roughly 1,307 tokens of context every time the server is loaded.

### Does the A2A Retailmedia — the agentic retail-media hub for grocery MCP server require authentication?

No. We connected to A2A Retailmedia — the agentic retail-media hub for grocery without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the A2A Retailmedia — the agentic retail-media hub for grocery MCP server still maintained?

A2A Retailmedia — the agentic retail-media hub for grocery is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp.a2a-retailmedia.ai/mcp
- Repository: https://github.com/greencore-solutions/a2a-retailmedia
- Website: https://a2a-retailmedia.ai/
- Changelog RSS feed: https://verifymcp.io/servers/greencore-solutions-a2a-retailmedia/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/greencore-solutions-a2a-retailmedia/mcp.json
- HTML version of this page: https://verifymcp.io/servers/greencore-solutions-a2a-retailmedia/mcp