{"name":"CPG-68000","description":"CPG-68000 is the CPG application profile of ACM-68000 — open, MIT, GreenCore Solutions Corp. Same seven signals, same numbers, same locked meanings: CPG-000 NOT_APPLICABLE · CPG-200 ALLOW · CPG-300 CONDITIONAL · CPG-403 RESTRICT · CPG-404 NOT_FOUND · CPG-451 ESCALATE · CPG-500 SYSTEM_ERROR. The prefix scopes the domain; the number carries the semantics. No new signals, no renumbering, no meaning drift: any of the seven CPG- codes resolves to its ACM- definition, and anything outside the seven falls back to the base protocol. Wire emission is unchanged — GSC surfaces emit ACM- signals (x-gsc-signal); CPG- codes are the domain-scoped register this door teaches.","supportedInterfaces":[{"url":"https://mcp.cpgagentprotocols.ai/mcp","protocolBinding":"HTTP+JSON","protocolVersion":"1.0"},{"url":"https://cpg-68000.ai/","protocolBinding":"HTTP+JSON","protocolVersion":"1.0"}],"provider":{"url":"https://gsc-em.com","organization":"GreenCore Solutions Corp."},"version":"1.5.1","documentationUrl":"https://cpg-68000.ai/llms.txt","capabilities":{"streaming":false,"pushNotifications":false,"extensions":[{"uri":"https://gsc-em.com/a2a/ext/scope-of-authority/v1","description":"GSC scope of authority: read, resolve and discovery calls are autonomous; every transactional commit is human-signed at the GSC Navigator HITL boundary.","required":false,"params":{"autonomous":["read","resolve","discover"],"humanSigned":["transactional-commit","order","rfq-acceptance","terms"],"hitlBoundary":"https://gsc-navigator.ai/","transactionSurface":"https://mcp.cpghumanintheloop.ai/mcp"}},{"uri":"https://gsc-em.com/a2a/ext/signal-door/v1","description":"This surface is the CPG-68000 spec door: the seven-signal procurement protocol, resolved live on the standards beacon.","required":false,"params":{"protocol":"ACM-68000","profile":"CPG-68000","registry":"io.github.greencore-solutions/gsc-marketplace","beacon":"https://mcp.cpgagentprotocols.ai/mcp"}},{"uri":"https://gsc-em.com/a2a/ext/enforcement-posture/v1","description":"These endpoints are open by design. When the buy side's credential standard reaches GA — expected Q4 2026-Q1 2027 — transactional methods migrate to OAuth 2.1 challenge per the MCP 2025-11-25 specification. Read access stays open. That is not pending work; that is the published plan.","required":false,"params":{"enforcement_posture":"open-by-declaration","migration_standard":"OAuth 2.1 + PKCE challenge (401 + WWW-Authenticate) on mcp:transact methods, per MCP spec 2025-11-25","migration_trigger":"ecosystem GA of credentialed counterparties (enterprise A2A/MCP buy-side GA)","migration_window":"Q4 2026 - Q1 2027","declared":"2026-08-24","operator":"GreenCore Solutions Corp.","duns":"24-336-6774"}}]},"securitySchemes":{"entraOAuth2":{"oauth2SecurityScheme":{"description":"Microsoft Entra OAuth 2.0 client credentials, GSC-provisioned after human review. Public reads on this door are open by design; tokens are required where commitments are made.","flows":{"clientCredentials":{"tokenUrl":"https://login.microsoftonline.com/54939635-2f2e-465a-8526-a907cb3c8ebd/oauth2/v2.0/token","scopes":{"mcp:read":"Read/resolve calls on the CPG Agent Protocols beacon over MCP."}}},"oauth2MetadataUrl":"https://cpg-68000.ai/.well-known/oauth-authorization-server"}},"bearerJwt":{"httpAuthSecurityScheme":{"scheme":"Bearer","bearerFormat":"JWT","description":"Bearer access token presented in the Authorization header."}}},"defaultInputModes":["application/json","text/plain"],"defaultOutputModes":["application/json","text/markdown"],"skills":[{"id":"resolve-signal","name":"Resolve a signal","description":"Any of the seven CPG-68000 / ACM-68000 signals to state, GTIN and buyer-side action.","tags":["cpg","signals","procurement"]},{"id":"escalate-to-human","name":"Escalate to a human","description":"ACM-451 — the two GSC doors.","tags":["hitl","escalation"]},{"id":"hitl-contact","name":"Human-in-the-Loop Contact","description":"Reach GreenCore Solutions Corp. through this surface's live, human-reviewed contact endpoint (POST https://formspree.io/f/xjybzzdz with fields name, email, message). Every transactional commit is human-signed via the GSC Trading Desk.","tags":["contact","hitl","registration"]}],"signatures":[{"protected":"eyJhbGciOiJFUzI1NiIsImtpZCI6ImdzYy1jYXJkcy0yMDI2LTA4In0","signature":"wi97YTpiN4AeI9d83-tx3FOYJPFTyg2cfU2tiAUlggr3KI1RB8U5Ru59-_drC0iH-hAiWDhQZTlIyGouMchGTQ"}]}