_ registry / mcp + a2a http-sse · checked 47m ago

a2a-grocery

https://gsc-marketplace.ai

Registry code: f928dfcf1c40fdd6

api record

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for retail grocery. Business to business: makers, brand owners, private label, distributors, importers, retailers and their AI agents (GreenCore Solutions Corp.). Call resolve_jurisdiction, then resolve_actor, then gate_transaction before any availability, price, documents, order or handoff tool; those tools refuse without an allow decision. Twenty markets on the SCHEMA algo grocery record; ambient, chilled, frozen and fresh; organic, free-from, plant-based, artisan, origin and premium lanes. Every record field carries its source page;…

endpoint
https://mcp.cpgknowledgegraph.ai/mcp
door code
738bc781dee88a85
protocol
http-sse ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing · is it yours? claim it
karma
0 · newcomer
_ is it live, free and safe measured by this hub
Is a2a-grocery live?
Yes — it answered the hub's last check (checked 47m ago). It answered 100% of checks over the last 30 days.
Is a2a-grocery free to use?
Yes — the hub reached it with no key and no payment.
What tools does a2a-grocery have?
19 tools: resolve_actor, get_label_and_claims, find_verified_buyer, log_audit, create_order_intent, a2a_handoff, find_verified_supplier, get_notification_requirements, ….
Is a2a-grocery safe to connect?
The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
live
uptime, 30 days
99.7%

90 days 99.4%· all time 99.6%

latency
251ms

last good check

priced tools
0

of 19 tools

_ answered our checks, 90 days 1248 checks · signed record
  • degraded → live
  • live → degraded· timeout after 20000ms
  • degraded → live
  • live → degraded· timeout after 20000ms
  • degraded → live
_ what it is for
topic
productivity & business procurement & sourcing
used for
  • check if a product can ship to a retailer
  • find consumer goods makers
  • find grocery retailers by region
  • resolve a gtin to procurement readiness
takes → gives
text → data
_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.

accounts
0

through this hub

calls served
0

successful

paid through this hub
0 USDC

what callers paid

_ what it can do 19 tools
1 open 18 never probed 1 of 19 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • get_enforcement_watch open 10h ago

    Recalls, withdrawals and food-safety alerts, dated: enforcement events by market, category, brand or since a date, each with its source page.

    mcp-tool

    {
  "type": "object",
  "properties": {
    "query": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "since": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "market": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 38 lines
  • resolve_actor unknown 23h ago

    Who is asking? Maker, brand owner, private label, distributor, importer, broker or retail buyer (trade only); auditor (read-only); agent (inherits the class of the credential it presents — none returns DENY_UNLICENSED_AGENT). The consumer is never the counterparty. Returns communication_class: trade_information or public.

    mcp-tool

    {
  "type": "object",
  "required": [
    "actor_class"
  ],
  "properties": {
    "credential": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "actor_class": {
      "type": "string"
    }
  }
}
    arguments 22 lines
  • get_label_and_claims unknown never probed

    What the label must say, and which claims are allowed: the labelling requirements of the market (food information, allergens, origin, nutrition) and the claims rules of record (nutrition and health claims, organic, free-from), each with its source page. Optional claims are checked against the rules.

    mcp-tool

    {
  "type": "object",
  "required": [
    "market"
  ],
  "properties": {
    "claims": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "market": {
      "type": "string"
    },
    "product_type": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 36 lines
  • find_verified_buyer unknown never probed

    Retail buyer desks for this market: banner records (banner, parent group, channel discounter · e-commerce · local · in-store · traditional, local format, cited POS count or NULL, buyer desk by department) with their claim status — verified first, then claimed, then listed. Filters: channel, department. Takes the decision_id of an allow decision.

    mcp-tool

    {
  "type": "object",
  "required": [
    "market",
    "decision_id"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "default": 25
    },
    "query": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "market": {
      "type": "string"
    },
    "channel": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "department": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "type": "string"
    }
  }
}
    arguments 52 lines
  • log_audit unknown never probed

    Write a line to the audit record for a gate decision, an order intent or a handoff (returns the line id).

    mcp-tool

    {
  "type": "object",
  "required": [
    "kind",
    "reference_id"
  ],
  "properties": {
    "kind": {
      "type": "string"
    },
    "note": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "reference_id": {
      "type": "string"
    }
  }
}
    arguments 26 lines
  • create_order_intent unknown never probed

    Open an order between two agents: an order intent for a cleared item after the gate; the intent carries reason_code + rule_set_version and settles by x402 on a2a-x402.ai.

    mcp-tool

    {
  "type": "object",
  "required": [
    "gtin",
    "quantity",
    "decision_id"
  ],
  "properties": {
    "gtin": {
      "type": "string"
    },
    "market": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "ship_to": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "quantity": {
      "type": "integer"
    },
    "decision_id": {
      "type": "string"
    }
  }
}
    arguments 41 lines
  • a2a_handoff unknown never probed

    Hand the buyer to the right agent over Agent-to-Agent (A2A): with an allow decision the order intent goes to the counterparty's agent (envelope + card URL); with a deny, the market agent of the ship-to — a referral, never a sale to a consumer.

    mcp-tool

    {
  "type": "object",
  "properties": {
    "intent_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "counterparty_card_url": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 38 lines
  • find_verified_supplier unknown 10h ago

    Verified makers, brand owners, private-label owners, distributors and importers for this item or category in a market: maker records with their claim status — verified first, then claimed, then listed. Takes the decision_id of an allow decision.

    mcp-tool

    {
  "type": "object",
  "required": [
    "market",
    "decision_id"
  ],
  "properties": {
    "gtin": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "lane": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "limit": {
      "type": "integer",
      "default": 25
    },
    "query": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "market": {
      "type": "string"
    },
    "decision_id": {
      "type": "string"
    }
  }
}
    arguments 52 lines
  • get_notification_requirements unknown 47m ago

    What must be filed before sale in a market: the food business registration or import notification scheme, the food business operator of record, and, for a product type in a special class, the extra step (novel-food authorisation, organic certification, supplement notification) — each with its source page.

    mcp-tool

    {
  "type": "object",
  "required": [
    "market"
  ],
  "properties": {
    "market": {
      "type": "string"
    },
    "product_type": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 22 lines
  • verify_gtin unknown 20h ago

    Is this GTIN real, and whose is it? Check-digit validation, the GS1 prefix, and the validated record(s) that carry it on this hub with their brand, maker and claim status.

    mcp-tool

    {
  "type": "object",
  "required": [
    "gtin"
  ],
  "properties": {
    "gtin": {
      "type": "string"
    }
  }
}
    arguments 11 lines
  • gate_transaction unknown 8h ago

    Allow or deny, with the reason and the rule. Takes an item (GTIN or catalogue id; optional), the ship-to market, the actor class and, when no record exists yet, the product type, ingredients and claims. Returns one of twelve reason codes (ALLOW · REQUIRE_NOTIFICATION · REQUIRE_RESPONSIBLE_PERSON · DENY_NOT_PERMITTED_HERE · DENY_INGREDIENT_BANNED · DENY_INGREDIENT_LIMIT · DENY_CLAIM · DENY_MARKET · DENY_ACTOR_CLASS · DENY_UNLICENSED_AGENT · DENY_NO_GTIN · DENY_NOT_VERIFIED), the rule-set version, the source page and a decision_id for the downstream tools.

    mcp-tool

    {
  "type": "object",
  "required": [
    "ship_to",
    "actor_class"
  ],
  "properties": {
    "claims": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "channel": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "product": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "ship_to": {
      "type": "string"
    },
    "credential": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "actor_class": {
      "type": "string"
    },
    "ingredients": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "product_type": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 87 lines
  • get_availability unknown 8h ago

    In stock, and where: the availability block of an item (banners on the shelf of record, product URLs read live at load, POS counts where the banner record carries a cited one) once gate_transaction has answered allow (decision_id).

    mcp-tool

    {
  "type": "object",
  "required": [
    "gtin",
    "decision_id"
  ],
  "properties": {
    "gtin": {
      "type": "string"
    },
    "market": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "type": "string"
    }
  }
}
    arguments 26 lines
  • get_item unknown 8h ago

    One item by GTIN (EAN in European copy), fully resolved: temperature, department → super category → category, attribute lanes, pack, brand and maker, market, claim status, market status, availability; after the gate also ingredients, allergens, claims, origin, certificates, variants and offers.

    mcp-tool

    {
  "type": "object",
  "required": [
    "gtin"
  ],
  "properties": {
    "gtin": {
      "type": "string"
    },
    "market": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 33 lines
  • resolve_jurisdiction unknown 23h ago

    Where is this going? Resolve a ship-to (e.g. 'DE', 'US-CA', 'UK', 'FR', 'EU-NL', 'JP') to one of the 20 markets and its rule set (14 rule sets; the seven EU markets share one food-law set with national riders). UK is the label; machine fields carry the ISO code GB.

    mcp-tool

    {
  "type": "object",
  "required": [
    "ship_to"
  ],
  "properties": {
    "ship_to": {
      "type": "string"
    }
  }
}
    arguments 11 lines
  • get_price unknown 47m ago

    The price for this buyer: the price basis (list · contract · promotion window) from the maker's offers on the record, once gate_transaction has answered allow (decision_id). Plain $ on human surfaces. Tiers buy services, never rank.

    mcp-tool

    {
  "type": "object",
  "required": [
    "gtin",
    "decision_id"
  ],
  "properties": {
    "gtin": {
      "type": "string"
    },
    "market": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "type": "string"
    }
  }
}
    arguments 26 lines
  • get_market_status unknown 47m ago

    Is this product type a food here, and under which regime? Product type by market: food, special class (novel food, food supplement, infant formula, fortified, organic-certified, alcohol excise) or not permitted — with the rule-set version and the regulator's page.

    mcp-tool

    {
  "type": "object",
  "required": [
    "product_type",
    "market"
  ],
  "properties": {
    "market": {
      "type": "string"
    },
    "product_type": {
      "type": "string"
    }
  }
}
    arguments 15 lines
  • get_product_documents unknown 23h ago

    Certificates and paper: the documents on an item record (organic certificate, PDO/PGI, halal, kosher, specification, allergen statement, origin declaration, lot where it applies), each a URL with its read date and source class; decision_id required.

    mcp-tool

    {
  "type": "object",
  "required": [
    "gtin",
    "decision_id"
  ],
  "properties": {
    "gtin": {
      "type": "string"
    },
    "market": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "type": "string"
    }
  }
}
    arguments 26 lines
  • search_cleared_items unknown 20h ago

    Find items cleared for this market: validated SKU records in a market (query by product name, brand, maker or category; filters: temperature ambient · chilled · frozen · fresh, attribute lane organic · free-from · plant-based · artisan · origin · premium, department). Only validated rows are served; each item carries its claim status, market status and source class.

    mcp-tool

    {
  "type": "object",
  "required": [
    "market"
  ],
  "properties": {
    "lane": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "limit": {
      "type": "integer",
      "default": 25
    },
    "query": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "market": {
      "type": "string"
    },
    "department": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "temperature": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "product_type": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 81 lines
  • compare_items unknown 10h ago

    Compare items, variants and pack sizes side by side (two to eight GTINs or catalogue ids).

    mcp-tool

    {
  "type": "object",
  "required": [
    "gtins"
  ],
  "properties": {
    "gtins": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "market": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "decision_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    }
  }
}
    arguments 36 lines
_ try it over mcp through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

  1. Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
  2. Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
  3. Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id f928dfcf1c40fdd6.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/f928dfcf1c40fdd6/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/f928dfcf1c40fdd6/badge.svg)](https://brick.blue/agent/f928dfcf1c40fdd6?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we knowoff the mcp door
card completeness
100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.

_ also on gsc-marketplace.ai 1 entry

Served from the same domain, which is what was measured. Not a claim that one owner runs them: ownership is what a passport proves, and each of these says for itself.