{ "title": "MCP Protocol Versions Supporting Content Plan", "schemaVersion": "1.0", "researchFreeze": "2026-08-26", "protocolRevision": "2026-07-28", "publicationNote": "Briefs are roadmap inputs, not permission to publish thin or duplicative pages.", "count": 72, "records": [ { "id": "R7-PAGE001", "packageBriefId": "PAGE001", "rank": 1, "group": "Fundamentals", "title": "What Is an MCP Protocol Version?", "url": "/what-is-an-mcp-protocol-version/", "searchIntent": "Definition", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S026", "S050", "S085", "S087" ], "sourceIds": [ "S056", "S319", "S073", "S335", "S336" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Clarifies the date identifier and prevents SDK/version confusion.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE002", "packageBriefId": "PAGE002", "rank": 2, "group": "Fundamentals", "title": "What Is the Latest MCP Version?", "url": "/latest-mcp-version/", "searchIntent": "Current answer", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S026", "S050", "S085", "S087" ], "sourceIds": [ "S056", "S319", "S073", "S335", "S336" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "High-freshness direct-answer intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE003", "packageBriefId": "PAGE003", "rank": 3, "group": "Fundamentals", "title": "Why MCP Uses Date-Based Versions", "url": "/mcp-date-based-versions/", "searchIntent": "Explanation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S026", "S050", "S085", "S087" ], "sourceIds": [ "S056", "S319", "S073", "S335", "S336" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Explains immutable protocol revisions.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE004", "packageBriefId": "PAGE004", "rank": 4, "group": "Fundamentals", "title": "Is MCP 2026-07-28 MCP 2.0?", "url": "/is-mcp-2026-07-28-mcp-2/", "searchIntent": "Comparison", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S026", "S050", "S085", "S087", "S001", "S002", "S005", "S015", "S017" ], "sourceIds": [ "S056", "S319", "S073", "S335", "S336", "S054", "S055", "S127", "S058", "S313" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Captures informal v2 terminology.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE005", "packageBriefId": "PAGE005", "rank": 5, "group": "Fundamentals", "title": "MCP Protocol Version vs SDK Version", "url": "/mcp-protocol-vs-sdk-version/", "searchIntent": "Comparison", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S026", "S050", "S085", "S087" ], "sourceIds": [ "S056", "S319", "S073", "S335", "S336" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Prevents a common implementation error.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE006", "packageBriefId": "PAGE006", "rank": 6, "group": "Versions", "title": "MCP 2024-11-05", "url": "/mcp-2024-11-05/", "searchIntent": "Historical spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S015", "S016", "S017", "S018", "S027", "S033", "S038", "S044", "S087", "S028", "S029", "S030", "S031", "S032" ], "sourceIds": [ "S054", "S055", "S058", "S053", "S313", "S314", "S249", "S035", "S042", "S048", "S336", "S026", "S027", "S028", "S029", "S030" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Dedicated launch-era reference.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE007", "packageBriefId": "PAGE007", "rank": 7, "group": "Versions", "title": "MCP 2025-03-26", "url": "/mcp-2025-03-26/", "searchIntent": "Historical spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S015", "S016", "S017", "S018", "S027", "S033", "S038", "S044", "S087", "S034", "S035", "S036", "S037" ], "sourceIds": [ "S054", "S055", "S058", "S053", "S313", "S314", "S249", "S035", "S042", "S048", "S336", "S036", "S156", "S038", "S037" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Dedicated Streamable HTTP/OAuth revision.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE008", "packageBriefId": "PAGE008", "rank": 8, "group": "Versions", "title": "MCP 2025-06-18", "url": "/mcp-2025-06-18/", "searchIntent": "Historical spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S015", "S016", "S017", "S018", "S027", "S033", "S038", "S044", "S087", "S039", "S040", "S041", "S042", "S043" ], "sourceIds": [ "S054", "S055", "S058", "S053", "S313", "S314", "S249", "S035", "S042", "S048", "S336", "S043", "S159", "S320", "S044", "S046" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Dedicated structured-output/security revision.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE009", "packageBriefId": "PAGE009", "rank": 9, "group": "Versions", "title": "MCP 2025-11-25", "url": "/mcp-2025-11-25/", "searchIntent": "Historical spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S015", "S016", "S017", "S018", "S027", "S033", "S038", "S044", "S087", "S045", "S046", "S047", "S048", "S049" ], "sourceIds": [ "S054", "S055", "S058", "S053", "S313", "S314", "S249", "S035", "S042", "S048", "S336", "S049", "S160", "S321", "S187", "S050" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Dedicated last-handshake revision.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE010", "packageBriefId": "PAGE010", "rank": 10, "group": "Versions", "title": "MCP 2026-07-28", "url": "/mcp-2026-07-28/", "searchIntent": "Current spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S015", "S016", "S017", "S018", "S027", "S033", "S038", "S044", "S087", "S004", "S005" ], "sourceIds": [ "S054", "S055", "S058", "S053", "S313", "S314", "S249", "S035", "S042", "S048", "S336", "S056", "S127" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Dedicated modern revision reference.", "publicationStatus": "published", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE011", "packageBriefId": "PAGE011", "rank": 11, "group": "Versions", "title": "MCP 2026-07-28 Release Candidate vs GA", "url": "/mcp-2026-07-28-rc-vs-ga/", "searchIntent": "Historical comparison", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S015", "S016", "S017", "S018", "S027", "S033", "S038", "S044", "S087", "S004", "S005" ], "sourceIds": [ "S054", "S055", "S058", "S053", "S313", "S314", "S249", "S035", "S042", "S048", "S336", "S056", "S127" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "Separates proposal testing from stable release.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE012", "packageBriefId": "PAGE012", "rank": 12, "group": "Compatibility", "title": "Is MCP Backward Compatible?", "url": "/is-mcp-backward-compatible/", "searchIntent": "Direct answer", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "High-intent compatibility question.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE013", "packageBriefId": "PAGE013", "rank": 13, "group": "Compatibility", "title": "MCP Compatibility Matrix", "url": "/mcp-compatibility-matrix/", "searchIntent": "Reference", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Maintained matrix for developers.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE014", "packageBriefId": "PAGE014", "rank": 14, "group": "Compatibility", "title": "Old MCP Client with New MCP Server", "url": "/old-mcp-client-new-server/", "searchIntent": "Troubleshooting", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Compatibility matrix", "parentPage": "/mcp-protocol-versions/#client-server-compatibility-matrix", "justification": "Concrete cross-era intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE015", "packageBriefId": "PAGE015", "rank": 15, "group": "Compatibility", "title": "New MCP Client with Old MCP Server", "url": "/new-mcp-client-old-server/", "searchIntent": "Troubleshooting", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Compatibility matrix", "parentPage": "/mcp-protocol-versions/#client-server-compatibility-matrix", "justification": "Concrete fallback intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE016", "packageBriefId": "PAGE016", "rank": 16, "group": "Compatibility", "title": "Dual-Era MCP Servers", "url": "/dual-era-mcp-server/", "searchIntent": "Architecture", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Compatibility matrix", "parentPage": "/mcp-protocol-versions/#client-server-compatibility-matrix", "justification": "Shows one endpoint serving both eras.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE017", "packageBriefId": "PAGE017", "rank": 17, "group": "Compatibility", "title": "MCP Protocol Pinning", "url": "/mcp-protocol-pinning/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Version negotiation", "parentPage": "/mcp-protocol-versions/#version-negotiation-discovery-and-fallback", "justification": "Explains strict modern selection.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE018", "packageBriefId": "PAGE018", "rank": 18, "group": "Compatibility", "title": "MCP Version Negotiation", "url": "/mcp-version-negotiation/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Core compatibility mechanism.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE019", "packageBriefId": "PAGE019", "rank": 19, "group": "Compatibility", "title": "MCP server/discover Explained", "url": "/mcp-server-discover/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066", "S001", "S002", "S015", "S017" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331", "S054", "S055", "S058", "S313" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "New-method search intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE020", "packageBriefId": "PAGE020", "rank": 20, "group": "Compatibility", "title": "MCP Version Mismatch Errors", "url": "/mcp-version-mismatch-errors/", "searchIntent": "Troubleshooting", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Version negotiation", "parentPage": "/mcp-protocol-versions/#version-negotiation-discovery-and-fallback", "justification": "Error diagnosis intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE021", "packageBriefId": "PAGE021", "rank": 21, "group": "Compatibility", "title": "How to Detect an MCP Server Version", "url": "/detect-mcp-server-version/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Version negotiation", "parentPage": "/mcp-protocol-versions/#version-negotiation-discovery-and-fallback", "justification": "Practical diagnostic page.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE022", "packageBriefId": "PAGE022", "rank": 22, "group": "Compatibility", "title": "How to Report MCP Compatibility", "url": "/report-mcp-compatibility/", "searchIntent": "Best practice", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S028", "S035", "S040", "S046", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S056", "S127", "S026", "S156", "S159", "S160", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "Compatibility matrix", "parentPage": "/mcp-protocol-versions/#client-server-compatibility-matrix", "justification": "Standardizes vendor wording.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE023", "packageBriefId": "PAGE023", "rank": 23, "group": "Migration", "title": "MCP 2025-11-25 to 2026-07-28 Migration", "url": "/mcp-2026-migration/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066", "S044", "S045", "S047", "S048", "S001", "S015", "S017" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331", "S048", "S049", "S321", "S187", "S054", "S058", "S313" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Highest-value migration page.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE024", "packageBriefId": "PAGE024", "rank": 24, "group": "Migration", "title": "MCP Client Migration to 2026-07-28", "url": "/mcp-client-migration-2026/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066", "S001", "S015", "S017" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331", "S054", "S058", "S313" ], "packageParentPage": "MCP 2026 migration", "parentPage": "/mcp-2026-07-28/#a-migration-checklist-that-catches-real-failures", "justification": "Role-specific implementation.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE025", "packageBriefId": "PAGE025", "rank": 25, "group": "Migration", "title": "MCP Server Migration to 2026-07-28", "url": "/mcp-server-migration-2026/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066", "S001", "S015", "S017" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331", "S054", "S058", "S313" ], "packageParentPage": "MCP 2026 migration", "parentPage": "/mcp-2026-07-28/#a-migration-checklist-that-catches-real-failures", "justification": "Role-specific implementation.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE026", "packageBriefId": "PAGE026", "rank": 26, "group": "Migration", "title": "MCP Host Migration to 2026-07-28", "url": "/mcp-host-migration-2026/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066", "S001", "S015", "S017" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331", "S054", "S058", "S313" ], "packageParentPage": "MCP 2026 migration", "parentPage": "/mcp-2026-07-28/#a-migration-checklist-that-catches-real-failures", "justification": "Product-specific responsibilities.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE027", "packageBriefId": "PAGE027", "rank": 27, "group": "Migration", "title": "Why MCP Removed initialize", "url": "/why-mcp-removed-initialize/", "searchIntent": "Technical history", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "Strong explanatory/search intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE028", "packageBriefId": "PAGE028", "rank": 28, "group": "Migration", "title": "What Replaced Mcp-Session-Id?", "url": "/what-replaced-mcp-session-id/", "searchIntent": "Technical answer", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "State migration intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE029", "packageBriefId": "PAGE029", "rank": 29, "group": "Migration", "title": "MCP Explicit State Handles", "url": "/mcp-state-handles/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "MCP 2026 migration", "parentPage": "/mcp-2026-07-28/#a-migration-checklist-that-catches-real-failures", "justification": "Application state after sessions.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE030", "packageBriefId": "PAGE030", "rank": 30, "group": "Migration", "title": "MCP resources/subscribe Migration", "url": "/mcp-resource-subscription-migration/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "MCP 2026 migration", "parentPage": "/mcp-2026-07-28/#a-migration-checklist-that-catches-real-failures", "justification": "Exact method-change intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE031", "packageBriefId": "PAGE031", "rank": 31, "group": "Migration", "title": "MCP Server-Initiated Requests to MRTR", "url": "/mcp-server-requests-to-mrtr/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S004", "S005", "S007", "S009", "S021", "S022", "S023", "S024", "S046", "S049", "S053", "S056", "S057", "S059", "S066" ], "sourceIds": [ "S055", "S056", "S127", "S057", "S131", "S061", "S316", "S317", "S137", "S160", "S050", "S253", "S166", "S323", "S325", "S331" ], "packageParentPage": "MCP 2026 migration", "parentPage": "/mcp-2026-07-28/#a-migration-checklist-that-catches-real-failures", "justification": "Interactive flow migration.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE032", "packageBriefId": "PAGE032", "rank": 32, "group": "Architecture", "title": "Is MCP Stateless?", "url": "/is-mcp-stateless/", "searchIntent": "Direct answer", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S003", "S004", "S005", "S006", "S007", "S021", "S022", "S023", "S024", "S025" ], "sourceIds": [ "S054", "S055", "S121", "S056", "S127", "S130", "S057", "S061", "S316", "S317", "S137", "S318" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "High-freshness architecture intent.", "publicationStatus": "reconciled-to-existing-canonical", "canonicalTarget": "/mcp-stateful-to-stateless/", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE033", "packageBriefId": "PAGE033", "rank": 33, "group": "Architecture", "title": "MCP Handshake Era vs Modern Era", "url": "/mcp-handshake-vs-modern/", "searchIntent": "Comparison", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S003", "S004", "S005", "S006", "S007", "S021", "S022", "S023", "S024", "S025" ], "sourceIds": [ "S054", "S055", "S121", "S056", "S127", "S130", "S057", "S061", "S316", "S317", "S137", "S318" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Core era model.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE034", "packageBriefId": "PAGE034", "rank": 34, "group": "Architecture", "title": "MCP Multi Round-Trip Requests", "url": "/mcp-mrtr/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S003", "S004", "S005", "S006", "S007", "S021", "S022", "S023", "S024", "S025" ], "sourceIds": [ "S054", "S055", "S121", "S056", "S127", "S130", "S057", "S061", "S316", "S317", "S137", "S318" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "Advanced current capability.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE035", "packageBriefId": "PAGE035", "rank": 35, "group": "Architecture", "title": "MCP Cache Hints", "url": "/mcp-cache-hints/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S003", "S004", "S005", "S006", "S007", "S021", "S022", "S023", "S024", "S025" ], "sourceIds": [ "S054", "S055", "S121", "S056", "S127", "S130", "S057", "S061", "S316", "S317", "S137", "S318" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "ttlMs/cacheScope intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE036", "packageBriefId": "PAGE036", "rank": 36, "group": "Architecture", "title": "MCP Header-Based Routing", "url": "/mcp-header-routing/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S003", "S004", "S005", "S006", "S007", "S021", "S022", "S023", "S024", "S025" ], "sourceIds": [ "S054", "S055", "S121", "S056", "S127", "S130", "S057", "S061", "S316", "S317", "S137", "S318" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "Gateway/infrastructure intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE037", "packageBriefId": "PAGE037", "rank": 37, "group": "Architecture", "title": "MCP subscriptions/listen", "url": "/mcp-subscriptions-listen/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S001", "S002", "S003", "S004", "S005", "S006", "S007", "S021", "S022", "S023", "S024", "S025" ], "sourceIds": [ "S054", "S055", "S121", "S056", "S127", "S130", "S057", "S061", "S316", "S317", "S137", "S318" ], "packageParentPage": "MCP 2026 page", "parentPage": "/mcp-2026-07-28/", "justification": "Current subscription mechanism.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE038", "packageBriefId": "PAGE038", "rank": 38, "group": "Transports", "title": "MCP Transport History", "url": "/mcp-transport-history/", "searchIntent": "History", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S007", "S008", "S009", "S029", "S036", "S041", "S047" ], "sourceIds": [ "S057", "S132", "S131", "S027", "S038", "S320", "S321" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Transport evolution authority.", "publicationStatus": "reconciled-to-existing-canonical", "canonicalTarget": "/mcp-transports/", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE039", "packageBriefId": "PAGE039", "rank": 39, "group": "Transports", "title": "HTTP+SSE vs Streamable HTTP", "url": "/mcp-http-sse-vs-streamable-http/", "searchIntent": "Comparison", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S007", "S008", "S009", "S029", "S036", "S041", "S047" ], "sourceIds": [ "S057", "S132", "S131", "S027", "S038", "S320", "S321" ], "packageParentPage": "Transport history", "parentPage": "/mcp-transports/#mcp-has-passed-through-three-http-eras", "justification": "High-intent comparison.", "publicationStatus": "reconciled-to-existing-canonical", "canonicalTarget": "/mcp-transports/", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE040", "packageBriefId": "PAGE040", "rank": 40, "group": "Transports", "title": "MCP Streamable HTTP 2025 vs 2026", "url": "/mcp-streamable-http-2025-vs-2026/", "searchIntent": "Comparison", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S007", "S008", "S009", "S029", "S036", "S041", "S047" ], "sourceIds": [ "S057", "S132", "S131", "S027", "S038", "S320", "S321" ], "packageParentPage": "Transport history", "parentPage": "/mcp-transports/#mcp-has-passed-through-three-http-eras", "justification": "Clarifies sessionful versus sessionless forms.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE041", "packageBriefId": "PAGE041", "rank": 41, "group": "Transports", "title": "MCP stdio Protocol Versions", "url": "/mcp-stdio-protocol-versions/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S007", "S008", "S009", "S029", "S036", "S041", "S047" ], "sourceIds": [ "S057", "S132", "S131", "S027", "S038", "S320", "S321" ], "packageParentPage": "Transport history", "parentPage": "/mcp-transports/#mcp-has-passed-through-three-http-eras", "justification": "Probe/fallback process behavior.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE042", "packageBriefId": "PAGE042", "rank": 42, "group": "Transports", "title": "MCP Session Affinity and Sticky Routing", "url": "/mcp-session-affinity/", "searchIntent": "Deployment", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S007", "S008", "S009", "S029", "S036", "S041", "S047" ], "sourceIds": [ "S057", "S132", "S131", "S027", "S038", "S320", "S321" ], "packageParentPage": "Legacy compatibility", "parentPage": "/mcp-stateful-to-stateless/#dual-era-support-needs-an-explicit-negotiation-branch", "justification": "Enterprise operational intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE043", "packageBriefId": "PAGE043", "rank": 43, "group": "Authorization", "title": "MCP Authorization by Protocol Version", "url": "/mcp-authorization-versions/", "searchIntent": "History/reference", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S010", "S034", "S037", "S039", "S042", "S045", "S048" ], "sourceIds": [ "S133", "S036", "S037", "S043", "S044", "S049", "S187" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Version-frozen auth evolution.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE044", "packageBriefId": "PAGE044", "rank": 44, "group": "Authorization", "title": "MCP OAuth 2025-03-26", "url": "/mcp-oauth-2025-03-26/", "searchIntent": "Historical spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S010", "S034", "S037", "S039", "S042", "S045", "S048", "S033", "S035", "S036" ], "sourceIds": [ "S133", "S036", "S037", "S043", "S044", "S049", "S187", "S035", "S156", "S038" ], "packageParentPage": "Auth versions", "parentPage": "/mcp-protocol-versions/#authorization-compatibility", "justification": "Original auth framework.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE045", "packageBriefId": "PAGE045", "rank": 45, "group": "Authorization", "title": "MCP OAuth 2025-06-18", "url": "/mcp-oauth-2025-06-18/", "searchIntent": "Historical spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S010", "S034", "S037", "S039", "S042", "S045", "S048", "S038", "S040", "S041", "S043" ], "sourceIds": [ "S133", "S036", "S037", "S043", "S044", "S049", "S187", "S042", "S159", "S320", "S046" ], "packageParentPage": "Auth versions", "parentPage": "/mcp-protocol-versions/#authorization-compatibility", "justification": "Resource-server hardening.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE046", "packageBriefId": "PAGE046", "rank": 46, "group": "Authorization", "title": "MCP Authorization 2025-11-25", "url": "/mcp-auth-2025-11-25/", "searchIntent": "Historical spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S010", "S034", "S037", "S039", "S042", "S045", "S048", "S044", "S046", "S047", "S049" ], "sourceIds": [ "S133", "S036", "S037", "S043", "S044", "S049", "S187", "S048", "S160", "S321", "S050" ], "packageParentPage": "Auth versions", "parentPage": "/mcp-protocol-versions/#authorization-compatibility", "justification": "OIDC/CIMD expansion.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE047", "packageBriefId": "PAGE047", "rank": 47, "group": "Authorization", "title": "MCP Authorization 2026-07-28", "url": "/mcp-auth-2026-07-28/", "searchIntent": "Current spec", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S010", "S034", "S037", "S039", "S042", "S045", "S048", "S001", "S002", "S004", "S005", "S015", "S017" ], "sourceIds": [ "S133", "S036", "S037", "S043", "S044", "S049", "S187", "S054", "S055", "S056", "S127", "S058", "S313" ], "packageParentPage": "Auth versions", "parentPage": "/mcp-protocol-versions/#authorization-compatibility", "justification": "Current conformance.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE048", "packageBriefId": "PAGE048", "rank": 48, "group": "Authorization", "title": "MCP Dynamic Client Registration Deprecation", "url": "/mcp-dcr-deprecation/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S010", "S034", "S037", "S039", "S042", "S045", "S048" ], "sourceIds": [ "S133", "S036", "S037", "S043", "S044", "S049", "S187" ], "packageParentPage": "Auth versions", "parentPage": "/mcp-protocol-versions/#authorization-compatibility", "justification": "Current migration intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE049", "packageBriefId": "PAGE049", "rank": 49, "group": "SDKs", "title": "MCP SDK Compatibility Matrix", "url": "/mcp-sdk-compatibility/", "searchIntent": "Reference", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051" ], "sourceIds": [ "S073", "S138" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "High-value live dataset.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE050", "packageBriefId": "PAGE050", "rank": 50, "group": "SDKs", "title": "TypeScript MCP Protocol Versions", "url": "/typescript-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S052", "S053", "S054", "S055" ], "sourceIds": [ "S073", "S138", "S252", "S253", "S168", "S322" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE051", "packageBriefId": "PAGE051", "rank": 51, "group": "SDKs", "title": "Python MCP Protocol Versions", "url": "/python-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S056", "S057", "S058" ], "sourceIds": [ "S073", "S138", "S166", "S323", "S324" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE052", "packageBriefId": "PAGE052", "rank": 52, "group": "SDKs", "title": "Go MCP Protocol Versions", "url": "/go-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S059", "S060" ], "sourceIds": [ "S073", "S138", "S325", "S326" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE053", "packageBriefId": "PAGE053", "rank": 53, "group": "SDKs", "title": "C# MCP Protocol Versions", "url": "/csharp-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S061", "S062" ], "sourceIds": [ "S073", "S138", "S078", "S327" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE054", "packageBriefId": "PAGE054", "rank": 54, "group": "SDKs", "title": "Java MCP Protocol Versions", "url": "/java-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S063", "S064" ], "sourceIds": [ "S073", "S138", "S328", "S329" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE055", "packageBriefId": "PAGE055", "rank": 55, "group": "SDKs", "title": "Rust MCP Protocol Versions", "url": "/rust-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S065" ], "sourceIds": [ "S073", "S138", "S330" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE056", "packageBriefId": "PAGE056", "rank": 56, "group": "SDKs", "title": "Ruby MCP Protocol Versions", "url": "/ruby-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S066", "S067", "S068" ], "sourceIds": [ "S073", "S138", "S331", "S084", "S332" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE057", "packageBriefId": "PAGE057", "rank": 57, "group": "SDKs", "title": "PHP MCP Protocol Versions", "url": "/php-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S069", "S070" ], "sourceIds": [ "S073", "S138", "S333", "S334" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE058", "packageBriefId": "PAGE058", "rank": 58, "group": "SDKs", "title": "Swift MCP Protocol Versions", "url": "/swift-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S071" ], "sourceIds": [ "S073", "S138", "S082" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE059", "packageBriefId": "PAGE059", "rank": 59, "group": "SDKs", "title": "Kotlin MCP Protocol Versions", "url": "/kotlin-mcp-protocol-versions/", "searchIntent": "SDK guide", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051", "S072" ], "sourceIds": [ "S073", "S138", "S080" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Language-specific traffic.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE060", "packageBriefId": "PAGE060", "rank": 60, "group": "SDKs", "title": "MCP SDK Tiers Explained", "url": "/mcp-sdk-tiers/", "searchIntent": "Governance", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051" ], "sourceIds": [ "S073", "S138" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Explains Tier 1/2/3 meaning.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE061", "packageBriefId": "PAGE061", "rank": 61, "group": "SDKs", "title": "MCP Conformance Testing", "url": "/mcp-conformance-testing/", "searchIntent": "Implementation", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S050", "S051" ], "sourceIds": [ "S073", "S138" ], "packageParentPage": "SDK matrix", "parentPage": "/mcp-protocol-versions/#sdk-and-host-compatibility", "justification": "Protocol testing authority.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE062", "packageBriefId": "PAGE062", "rank": 62, "group": "Deprecations", "title": "MCP Deprecation Policy", "url": "/mcp-deprecation-policy/", "searchIntent": "Governance", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S019", "S020", "S024", "S025", "S049" ], "sourceIds": [ "S055", "S315", "S065", "S137", "S318", "S050" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Durable policy page.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE063", "packageBriefId": "PAGE063", "rank": 63, "group": "Deprecations", "title": "MCP Deprecated Features", "url": "/mcp-deprecated-features/", "searchIntent": "Reference", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S019", "S020", "S024", "S025", "S049" ], "sourceIds": [ "S055", "S315", "S065", "S137", "S318", "S050" ], "packageParentPage": "Deprecation policy", "parentPage": "/mcp-protocol-versions/#breaking-changes-and-deprecations", "justification": "Maintained current inventory.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE064", "packageBriefId": "PAGE064", "rank": 64, "group": "Deprecations", "title": "MCP Roots Deprecation", "url": "/mcp-roots-deprecation/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S019", "S020", "S024", "S025", "S049" ], "sourceIds": [ "S055", "S315", "S065", "S137", "S318", "S050" ], "packageParentPage": "Deprecated features", "parentPage": "/mcp-protocol-versions/#breaking-changes-and-deprecations", "justification": "Focused migration intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE065", "packageBriefId": "PAGE065", "rank": 65, "group": "Deprecations", "title": "MCP Sampling Deprecation", "url": "/mcp-sampling-deprecation/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S019", "S020", "S024", "S025", "S049" ], "sourceIds": [ "S055", "S315", "S065", "S137", "S318", "S050" ], "packageParentPage": "Deprecated features", "parentPage": "/mcp-protocol-versions/#breaking-changes-and-deprecations", "justification": "Focused migration intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE066", "packageBriefId": "PAGE066", "rank": 66, "group": "Deprecations", "title": "MCP Logging Deprecation", "url": "/mcp-logging-deprecation/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S019", "S020", "S024", "S025", "S049" ], "sourceIds": [ "S055", "S315", "S065", "S137", "S318", "S050" ], "packageParentPage": "Deprecated features", "parentPage": "/mcp-protocol-versions/#breaking-changes-and-deprecations", "justification": "Focused migration intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE067", "packageBriefId": "PAGE067", "rank": 67, "group": "Deprecations", "title": "MCP Tasks Core-to-Extension Migration", "url": "/mcp-tasks-extension-migration/", "searchIntent": "Migration", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S002", "S019", "S020", "S024", "S025", "S049" ], "sourceIds": [ "S055", "S315", "S065", "S137", "S318", "S050" ], "packageParentPage": "Deprecated features", "parentPage": "/mcp-protocol-versions/#breaking-changes-and-deprecations", "justification": "Long-running work migration.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE068", "packageBriefId": "PAGE068", "rank": 68, "group": "Testing", "title": "MCP Compatibility Testing Guide", "url": "/test-mcp-compatibility/", "searchIntent": "Testing", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S007", "S010", "S011", "S012", "S013", "S014", "S050", "S083" ], "sourceIds": [ "S056", "S127", "S057", "S133", "S123", "S124", "S125", "S126", "S073", "S297" ], "packageParentPage": "Protocol versions pillar", "parentPage": "/mcp-protocol-versions/", "justification": "Implementation-ready test guide.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE069", "packageBriefId": "PAGE069", "rank": 69, "group": "Testing", "title": "MCP Interoperability Test Matrix", "url": "/mcp-interoperability-tests/", "searchIntent": "Testing", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S007", "S010", "S011", "S012", "S013", "S014", "S050", "S083" ], "sourceIds": [ "S056", "S127", "S057", "S133", "S123", "S124", "S125", "S126", "S073", "S297" ], "packageParentPage": "Compatibility testing", "parentPage": "/mcp-protocol-versions/#compatibility-testing-checklist", "justification": "Cross-product test dataset.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE070", "packageBriefId": "PAGE070", "rank": 70, "group": "Testing", "title": "MCP Version Diagnostics", "url": "/mcp-version-diagnostics/", "searchIntent": "Troubleshooting", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S007", "S010", "S011", "S012", "S013", "S014", "S050", "S083" ], "sourceIds": [ "S056", "S127", "S057", "S133", "S123", "S124", "S125", "S126", "S073", "S297" ], "packageParentPage": "Compatibility testing", "parentPage": "/mcp-protocol-versions/#compatibility-testing-checklist", "justification": "Operational debugging intent.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE071", "packageBriefId": "PAGE071", "rank": 71, "group": "Testing", "title": "MCP Legacy Server Test Cases", "url": "/mcp-legacy-server-tests/", "searchIntent": "Testing", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S007", "S010", "S011", "S012", "S013", "S014", "S050", "S083" ], "sourceIds": [ "S056", "S127", "S057", "S133", "S123", "S124", "S125", "S126", "S073", "S297" ], "packageParentPage": "Compatibility testing", "parentPage": "/mcp-protocol-versions/#compatibility-testing-checklist", "justification": "Legacy support validation.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." }, { "id": "R7-PAGE072", "packageBriefId": "PAGE072", "rank": 72, "group": "Testing", "title": "MCP Modern Server Test Cases", "url": "/mcp-modern-server-tests/", "searchIntent": "Testing", "sourceBasis": "Official versioned specifications, SDK docs or vendor docs as applicable", "packageSourceIds": [ "S004", "S005", "S007", "S010", "S011", "S012", "S013", "S014", "S050", "S083" ], "sourceIds": [ "S056", "S127", "S057", "S133", "S123", "S124", "S125", "S126", "S073", "S297" ], "packageParentPage": "Compatibility testing", "parentPage": "/mcp-protocol-versions/#compatibility-testing-checklist", "justification": "Current conformance validation.", "publicationStatus": "planned", "cannibalizationGuard": "Use the parent for overview; child owns its exact implementation/version intent. Package 7 proposals remain roadmap-only until they pass a current-evidence, information-gain, and cannibalization review." } ] }