A2A Grocery — the agentic hub for retail grocery procurement

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

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

已验证Streamable HTTP可网页运行FinanceBusiness & Commerce

概览

AI 生成的概览

面向企业间零售食品杂货采购的远程 MCP 中枢，让助手在 20 个市场查询法规、合规商品、价格与订单意向。

功能
A2A Grocery 是用于零售食品杂货贸易的远程 streamable-HTTP MCP 服务器，提供 19 个工具，分为闸门调用（resolve_jurisdiction、resolve_actor、gate_transaction）、SKU 工具（search_cleared_items、get_item、verify_gtin、get_label_and_claims、compare_items）、链路工具（find_verified_buyer、find_verified_supplier）、文档与审计工具、经济类工具（get_price、get_availability、create_order_intent、a2a_handoff）以及市场状态工具。任何可用性、价格、文档、订单或交接工具之前都必须先执行闸门调用，否则这些工具会拒绝执行。记录带有来源页面、声明状态与提示信息。
适用场景
当助手需要支持食品杂货采购或寻源工作时适用：在覆盖的 20 个市场中查找已合规的供应商或采购方、核对各市场的标签与声明要求、验证 GTIN，或准备订单意向。面向制造商、品牌方、分销商、进口商与零售商等贸易用户，而非消费者。
运行要求
通过 streamable-HTTP 连接远程端点 a2a-registry.ai 的客户端凭证 Bearer 令牌，范围 grocery.transact，需先在其 OAuth 注册路径注册。需要网络访问。
安装前请注意
交易类工具需要来自签发方的 Bearer 凭证，应视为机密。订单意向与交接属于写入操作并受闸门约束，支付通过 x402 以 Base 上的 USDC 进行，因此闸门通过后可能产生支出。该服务器声明自身是信息源而非推荐，且 AI 会出错，行动前请核实记录。

安装

在 SourceWeft 中

  1. 打开 控制台中的 A2A Grocery — the agentic hub for retail grocery procurement，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "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.

来源：README.md，提交 afc267d

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版本历史

1
  1. v1.0.0最新Oct 2, 2026