A2A Grocery — the agentic hub for retail grocery procurement

io.github.greencore-solutionsv1.0.0更新於 Oct 2, 2026

A2A + MCP hub for retail grocery procurement — 20 markets on the SCHEMA algo record. Trade only.

已驗證Streamable HTTP可網頁執行FinanceBusiness & Commerce

概覽

AI 產生的概覽

面向企業間零售食品雜貨採購的遠端 MCP 中樞，讓助理在 20 個市場查詢法規、合規商品、價格與訂單意向。

功能
A2A Grocery 是用於零售食品雜貨貿易的遠端 streamable-HTTP MCP 伺服器，提供 19 個工具，分為閘門呼叫（resolve_jurisdiction、resolve_actor、gate_transaction）、SKU 工具（search_cleared_items、get_item、verify_gtin、get_label_and_claims、compare_items）、鏈路工具（find_verified_buyer、find_verified_supplier）、文件與稽核工具、經濟類工具（get_price、get_availability、create_order_intent、a2a_handoff）以及市場狀態工具。任何可用性、價格、文件、訂單或交接工具之前都必須先執行閘門呼叫，否則這些工具會拒絕執行。紀錄帶有來源頁面、聲明狀態與提示訊息。
適用情境
當助理需要支援食品雜貨採購或尋源工作時適用：在涵蓋的 20 個市場中尋找已合規的供應商或採購方、核對各市場的標籤與聲明要求、驗證 GTIN，或準備訂單意向。對象為製造商、品牌方、經銷商、進口商與零售商等貿易使用者，而非消費者。
執行需求
透過 streamable-HTTP 連接遠端端點 a2a-registry.ai 的客戶端憑證 Bearer 權杖，範圍 grocery.transact，須先在其 OAuth 註冊路徑註冊。需要網路存取。
安裝前請注意
交易類工具需要來自簽發方的 Bearer 憑證，應視為機密。訂單意向與交接屬於寫入操作並受閘門約束，付款透過 x402 以 Base 上的 USDC 進行，因此閘門通過後可能產生支出。此伺服器聲明本身是資訊來源而非推薦，且 AI 會出錯，行動前請核實紀錄。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 A2A Grocery — the agentic hub for retail grocery procurement，將其新增到工作區。
  2. 為需要使用其工具的對話啟用該服務。

Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。

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

README

A2A Grocery — the agentic hub for retail grocery procurement

Powered by SCHEMA algo for grocery agentic commerce

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for retail grocery, speciality foods first. Business to business: makers, brand owners, private label, distributors, importers, retailers and their AI agents. Twenty markets on the SCHEMA algo grocery record; ambient, chilled, frozen and fresh; organic, free-from, plant-based, artisan, origin and premium lanes. 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. Every record field carries its source page; every response carries notice; every record carries claim_status (listed · claimed · verified). Artificial intelligence makes mistakes. A2A Grocery is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.

A2A Grocery is built and run by GreenCore Solutions Corp. (github.com/greencore-solutions). This is the public connect kit, MIT.

The door

streamable-HTTP, stateless, server name `a2a-grocery`, door version 1.0.0, 19 tools (read from the wire 2026-10-02)
  • Endpoint: https://mcp.a2a-grocery.ai/mcp — any client that speaks streamable-HTTP: { "url": "https://mcp.a2a-grocery.ai/mcp", "transport": "streamable-http" }
  • A2A 0.3.0 JSON-RPC: https://a2a-grocery.ai/a2a (the hub) and https://<country code>.a2a-grocery.ai/a2a (one market agent per market, for example fr.a2a-grocery.ai for France)
  • Agent Card: https://a2a-grocery.ai/.well-known/agent-card.json (ES256, kid a2ag-2026-10; keyring /.well-known/jwks.json)
  • Setup: https://a2a-grocery.ai/setup · Docs: https://a2a-grocery.ai/docs · Support: https://a2a-grocery.ai/support
  • Official MCP Registry: io.github.greencore-solutions/a2a-grocery (server.json in this repo)

The twenty markets

Europe: France, Germany, Italy, Spain, Poland, UK, Netherlands, Belgium, Switzerland. Americas: United States, Canada, Mexico, Brazil. Asia-Pacific: Japan, South Korea, India, Vietnam, Thailand, Singapore, Australia. Every market is a jurisdiction on the record from day one, on one of fourteen rule sets (the seven European Union markets share one food-law set with national riders).

The gate

Three calls before any price: resolve_jurisdiction → resolve_actor → gate_transaction. 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 tools

  • Gate — resolve_jurisdiction, resolve_actor, gate_transaction
  • SKUs — search_cleared_items, get_item, verify_gtin, get_label_and_claims, compare_items
  • Chains — find_verified_buyer, find_verified_supplier
  • HITL (the auditor and documents lane) — get_product_documents, log_audit
  • Economics — get_price, get_availability, create_order_intent, a2a_handoff
  • Acts — get_market_status, get_notification_requirements, get_enforcement_watch

Reads are open. The transacting tools take a client-credentials Bearer from the issuer, https://a2a-registry.ai (register at /oauth/register; scope grocery.transact; see https://a2a-grocery.ai/auth.md).

Two worked prompts

Buy side — "Find cleared organic dry pasta suppliers for a discounter in Germany, with certificates and availability."

Sell side — "Which retail buyer desks in France take artisan chilled products, and what does each market require on the label?"

Examples

Stock clients, no adapter: examples/aws_strands.py · examples/azure_semantic_kernel.py · examples/google_genai.py · examples/generic_mcp_client.py; A2A: examples/a2a_aws_strands.py · examples/a2a_azure_agent_framework.py · examples/a2a_google_sdk.py.

Search words

grocery · retail grocery · procurement · supplier · buyer · private label · GTIN · discounter · supermarket · speciality foods · organic · cleared · orderable · AI agent · agent-to-agent · 20 markets · SCHEMA algo · A2A Grocery · agentic hub · Estate AI Agent · GSC Agentic Core

Pay on it

x402 on https://a2a-x402.ai (USDC on Base, settlement after the gate; a refused order intent is not settled and not charged). Front door: https://a2a-pay.ai.

Contact

[email protected] — the registry contact for every listing this hub files. A person reads the form at https://a2a-grocery.ai/support.

Built and run by GreenCore Solutions Corp. Artificial intelligence makes mistakes. A2A Grocery is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.

來源：README.md，提交 afc267d

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版本歷史

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  1. v1.0.0最新Oct 2, 2026