# rco-a2a.ai

Doors by what they resolve:
- GTINs → https://gtinfetch.ai/mcp
- Listed issuers (ticker, ISIN, LEI) → https://mcp.getissuer.ai/mcp
- Receipts — the Record of Cleared Orders (RCO) → https://mcp.rco-a2a.ai/mcp

The receipt of every order a GSC hub gate cleared: what was cleared, for whom, under which rule, when — and which product record it read. Signed by the hub, hashed on an Azure Confidential Ledger, served by decision id. No caller data, no amounts.

- Door: https://mcp.rco-a2a.ai/mcp — two tools: get_receipt(decision_id) (public) · write_receipt(receipt) (the hubs, header x-hub-key)
- Receipt page: https://rco-a2a.ai/receipts/{decision_id} (JSON at .json)
- Card: https://rco-a2a.ai/.well-known/agent-card.json (one door, one card, no agents)
- Hubs that write: a2a-grocery.ai · a2a-cosmetics.ai · a2a-peptides.ai; the product record they read is gtinfetch.ai (signed, kid gtinfetch-2026-10)
- Verify: the hub signature against the hub's /.well-known/jwks.json; the ledger entry against gsc-rco-ledger.confidential-ledger.azure.com
- Setup: https://rco-a2a.ai/setup · Docs: https://rco-a2a.ai/docs · A person answers: https://gsc-navigator.ai

The clearance records of the earlier RCO (C · Cleared) are history: they stay in the ledger and in the image; no tool serves them.

Products resolve by barcode at gtinfetch.ai.
Barcode resolution (live): GET https://gtinfetch.ai/01/{gtin14} — gtinfetch.ai (MCP: https://gtinfetch.ai/mcp)
Trade gate (live): https://mcp.a2a-grocery.ai/mcp — A2A Grocery
Humans (HITL): https://gsc-navigator.ai/
Standards held by the reference operator: eco-10060.org · acm-68000.org · rco-10060.org · rco-a2a.ai
Operator: Agentic KG Holdings · reference operator
Licence: MIT
Implemented by (GSC hubs): A2A Grocery https://mcp.a2a-grocery.ai/mcp · A2A Cosmetics https://mcp.a2a-cosmetics.ai/mcp · A2A Peptides https://mcp.a2a-peptides.ai/mcp · gtinfetch.ai https://gtinfetch.ai/mcp
Implemented by (Allooloo): the door https://mcp.getissuer.ai/mcp (resolver; apex alias https://mcp.capitalmarketsknowledgegraph.ai/mcp) · twelve nodes · https://mcp.ca-cm-kg.ai/mcp · https://mcp.uk-cm-kg.ai/mcp · https://mcp.us-cm-kg.ai/mcp · https://mcp.de-cm-kg.ai/mcp · https://mcp.fr-cm-kg.ai/mcp · https://mcp.nl-cm-kg.ai/mcp · https://mcp.ch-cm-kg.ai/mcp · https://mcp.au-cm-kg.ai/mcp · https://mcp.sg-cm-kg.ai/mcp · https://mcp.jp-cm-kg.ai/mcp · https://mcp.kr-cm-kg.ai/mcp · https://mcp.hk-cm-kg.ai/mcp