# A2A Retailmedia — the agentic retail-media hub for grocery

> Connecting grocery retail to 350k makers for media buys.

- name: io.github.greencore-solutions/a2a-retailmedia
- version: 1.0.2
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.greencore-solutions%2Fa2a-retailmedia
- tools: https://api.protogrid.dev/v1/servers/io.github.greencore-solutions%2Fa2a-retailmedia/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

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


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% +updated-16d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 19 of 19 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 2,203 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 25 tool changes in 30 days
- fail `stability.rug_pull`: 2 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 19, about 2,203 tokens to load them all
- tool set hash: f3a0858edeba56442deedcd70a63bb21
- tools last changed: 2026-10-20T06:25:54.703Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.greencore-solutions/a2a-retailmedia.svg)](https://protogrid.dev/servers/io.github.greencore-solutions/a2a-retailmedia)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-20 `get_banner_card` changed (description)
  - before: The signed card of one banner and its status (unclaimed, claimed or registered). banner = the banner's slug, id or name.
  - after: The signed card of one banner and its status (listed · claimed · verified). banner = the banner's slug, id or name.
- 2026-10-16 `resolve_gtin` changed (description)
  - before: 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.
  - after: 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.
- 2026-10-11 `enrol_maker` changed (inputSchema, outputSchema)
- 2026-10-11 `log_audit` changed (inputSchema, outputSchema)
- 2026-10-11 `renew_package` changed (inputSchema, outputSchema)
- 2026-10-11 `pull_measurement` changed (inputSchema, outputSchema)
- 2026-10-11 `a2a_handoff` changed (inputSchema, outputSchema)
- 2026-10-11 `receive_demand` changed (inputSchema, outputSchema)
- 2026-10-11 `submit_demand` changed (inputSchema, outputSchema)
- 2026-10-11 `find_buyer` changed (inputSchema, outputSchema)

Full history: https://api.protogrid.dev/v1/servers/io.github.greencore-solutions%2Fa2a-retailmedia/changes

## Remotes

- https://mcp.a2a-retailmedia.ai/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (19)

- `a2a_handoff`: Hand to a person: the state of a handoff and its Navigator desk ticket, where the media program has no agent.
- `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.
- `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.
- `find_buyer`: Qualify the buyer: find a maker on the grocery record by name, with its own website where the record has one.
- `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.
- `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.
- `get_banner_card`: The signed card of one banner and its status (listed · claimed · verified). banner = the banner's slug, id or name.
- `list_banner_cards`: The cards of one market, optionally by status (unclaimed, claimed, registered): banner, media program, status and the card's address.
- `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.
- `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.
- `log_audit`: Write one audit line for a step of the chain; returns its id.
- `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.
- `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.
- `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.
- `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.
- `resolve_actor`: Who is asking? maker, brand_owner, agency, distributor or retailer_media_team (trade); auditor (read only). The consumer is never the counterparty.
- `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.
- `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.
- `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.