gsc-marketplace — mcp.gsc-marketplace.ai · gsc-marketplace.ai

GSC-Marketplace — the fifth GSC surface: selection. CPG sourcing for AI Agents with x402. GreenCore Solutions Corp.

When a marketplace or retail sourcing agent calls, it leaves with a brand it can act on — found, verified, and answerable — with Instant Messaging for agents or the human-in-the-loop GSC Trading Desk as next steps.

• MCP (streamable-http): https://mcp.gsc-marketplace.ai/mcp — 11 tools: search_brands · get_brand · get_brand_identifiers · get_marketplace_operators · instant_message_agents · contact_trading_desk · get_x402_rail · get_radar · get_cpg_knowledge_graph · get_acm_68000 · get_aio_agent_fleet

• Human surface: https://gsc-marketplace.ai/ (markdown twin on Accept: text/markdown); .com/.io/.org + www 308 → apex (POST-safe)

• Registry: io.github.greencore-solutions/gsc-marketplace (server.json, published via the OIDC workflow)

• Wire: THE NINETEEN on every response — the Ghost Eighteen + x-gsc-x402: ready (capability, never terms). Everything free: no payment machinery, no 402 challenge.

• Resolution: live against the CPG Knowledge Graph (kg.js); the marketplace holds no graph data. Only GSC-registered identifiers are ever published.

Design of record: C:\START_ME_UP_AIO\NG-3_MCP.md. Files: server.js (tools + host routing) · canon.js (compiled canon) · kit.js (17-check discovery kit) · kg.js (KG client) · apex.js (human surface).