tools.schemasevery tool has an object input schema
pass
tools.annotations19 of 19 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 2,203 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump
stability25 · weight 15
warn
stability.changes25 tool changes in 30 days
fail
stability.rug_pull2 tools kept their name but changed most of their description in 30 days; review before trusting them
dependenciesn/a · weight 15
n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package
19 tools, about 2,203 tokens to load them all · tool set f3a0858edeba · tools last changed 2026-10-20 · checked 2026-10-20 17:34 UTC
Tool changes
get_banner_cardchangeddescription
before
The signed card of one banner and its status (unclaimed, claimed or registered). banner = the banner's slug, id or name.
after · 79% of words in common
The signed card of one banner and its status (listed · claimed · verified). banner = the banner's slug, id or name.
resolve_gtinchangeddescription
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 · 73% of words in common
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.
Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.
Endpoints
remote
auth
reachable
uptime 30d
p50
protocol
last ok
https://mcp.a2a-retailmedia.ai/mcpstreamable-http
none
yes
100%
530 ms
2026-07-28
2026-10-20
Tools (19)
a2a_handoffread-only
Hand to a person: the state of a handoff and its Navigator desk ticket, where the media program has no agent.
check_eligibilityread-only
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_buyerread-only
Qualify the buyer: find a maker on the grocery record by name, with its own website where the record has one.
find_makersread-only
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_cardread-only
The signed card of one banner and its status (listed · claimed · verified). banner = the banner's slug, id or name.
list_banner_cardsread-only
The cards of one market, optionally by status (unclaimed, claimed, registered): banner, media program, status and the card's address.
list_bannersread-only
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_packagesread-only
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_measurementread-only
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_packageread-only
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_actorread-only
Who is asking? maker, brand_owner, agency, distributor or retailer_media_team (trade); auditor (read only). The consumer is never the counterparty.
resolve_gtinread-only
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_jurisdictionread-only
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.
{
"name": "io.github.greencore-solutions/a2a-retailmedia",
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"x402": "https://a2a-retailmedia.ai/api",
"setup": "https://a2a-retailmedia.ai/docs#door",
"terms": "https://gsc-em.com/legal",
"title": "A2A Retailmedia — the agentic retail-media hub for grocery",
"tools": 19,
"health": "https://mcp.a2a-retailmedia.ai/health.json",
"notice": "Artificial intelligence makes mistakes. A2A Retailmedia is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.",
"contact": "[email protected]",
"privacy": "https://gsc-em.com/privacy",
"support": "https://gsc-em.com/#contact",
"line_two": "Connecting grocery retail to 350k makers for media buys. Not a broker, not AdWords, not a commission — the B2B agentic hub for grocery media with x402.",
"publisher": "GreenCore Solutions Corp.",
"transport": "streamable-http",
"agent_card": "https://a2a-retailmedia.ai/.well-known/agent-card.json",
"card_index": "https://a2a-retailmedia.ai/agents/index.json",
"description": "Connecting grocery retail to 350k makers for media buys. Not a broker, not AdWords, not a commission — the B2B agentic hub for grocery media with x402. A2A Retailmedia is operated by GreenCore Solutions Corp.: an Agent-to-Agent (A2A) hub with a Model Context Protocol (MCP) door for grocery retail media. The retailer is the seller of media and the maker's agent is the buyer. Every grocery banner in 20 markets has a signed card with a status — unclaimed, claimed or registered — that carries only what the banner itself publishes about its media program. GreenCore Solutions Corp. owns no inventory, runs no auction, makes no creative and quotes no price. Reads are open. Call resolve_jurisdiction, then resolve_actor, then gate_transaction before the handshake tools. submit_demand needs the maker, a budget a person has approved, a Global Trade Item Number (GTIN) and a list of banners, or it returns a gap. Artificial intelligence makes mistakes. A2A Retailmedia is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.",
"documentation": "https://a2a-retailmedia.ai/docs",
"publisher_url": "https://gsc-em.com"
}
},
"icons": [
{
"src": "https://a2a-retailmedia.ai/favicon.svg",
"sizes": [
"any"
],
"theme": "light",
"mimeType": "image/svg+xml"
},
{
"src": "https://a2a-retailmedia.ai/favicon-512.png",
"sizes": [
"512x512"
],
"theme": "light",
"mimeType": "image/png"
}
],
"title": "A2A Retailmedia — the agentic retail-media hub for grocery",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://mcp.a2a-retailmedia.ai/mcp",
"type": "streamable-http"
}
],
"version": "1.0.2",
"repository": {
"url": "https://github.com/greencore-solutions/a2a-retailmedia",
"source": "github"
},
"websiteUrl": "https://a2a-retailmedia.ai",
"description": "Connecting grocery retail to 350k makers for media buys."
}