{
  "title": "MCP revision compatibility",
  "description": "Implement or negotiate the exact dated MCP revision. Compatibility evidence is tracked independently from other MCP capabilities.",
  "slug": "mcp-revision",
  "locale": "en",
  "seoTitle": "MCP revision compatibility compatibility — Can My Agent Use",
  "socialTitle": "MCP revision compatibility",
  "socialDescription": "Implement or negotiate the exact dated MCP revision. Unreviewed product cells remain unknown.",
  "llmSummary": "MCP revision compatibility is an atomic MCP capability. Support for another MCP primitive does not imply this capability.",
  "audience": "Engineers comparing chat, desktop, and CLI agent harnesses.",
  "contentKind": "feature",
  "status": "published",
  "tags": [
    "interfaces",
    "mcp"
  ],
  "updated": "2026-08-28T00:00:00.000Z",
  "published": "2026-08-28T00:00:00.000Z",
  "category": "interfaces",
  "summary": "Implement or negotiate the exact dated MCP revision.",
  "specLabel": "MCP 2026-07-28",
  "specification": {
    "id": "mcp",
    "revision": "2026-07-28",
    "maturity": "published",
    "role": "protocol revision",
    "authority": "MCP project / AAIF ecosystem",
    "canonicalUrl": "https://modelcontextprotocol.io/specification/2026-07-28"
  },
  "aliases": [
    "MCP revision"
  ],
  "capabilityKind": "atomic",
  "parent": "mcp",
  "related": [],
  "relations": [],
  "highlight": false,
  "notes": [
    {
      "id": 1,
      "text": "Microsoft documentation broadly claims full MCP support, while the pinned VS Code source still declares 2025-11-25 as its latest protocol version."
    }
  ],
  "issues": [],
  "resources": [
    {
      "title": "Model Context Protocol specification",
      "href": "https://modelcontextprotocol.io/specification/2026-07-28",
      "kind": "spec"
    },
    {
      "id": "microsoft-vscode-mcp-guide",
      "title": "Microsoft VS Code — MCP developer guide",
      "href": "https://code.visualstudio.com/api/extension-guides/ai/mcp",
      "kind": "docs",
      "publisher": "Microsoft",
      "evidenceType": "documented",
      "reviewedAt": "2026-08-28",
      "locator": "introduction — implements the full MCP specification"
    },
    {
      "id": "microsoft-vscode-mcp-schema-source",
      "title": "Microsoft VS Code — vendored MCP protocol schema",
      "href": "https://github.com/microsoft/vscode/blob/a39698f7e6ecc255f6e9cf752d1c6d01faf308da/src/vs/platform/mcp/common/modelContextProtocol.ts",
      "kind": "docs",
      "publisher": "Microsoft",
      "evidenceType": "documented",
      "reviewedAt": "2026-08-28",
      "locator": "LATEST_PROTOCOL_VERSION"
    }
  ],
  "support": [
    {
      "harness": "vscode-copilot",
      "versions": [
        {
          "track": "current",
          "status": "partial",
          "noteIds": [
            1
          ],
          "target": {
            "kind": "dated-documentation",
            "revision": "VS Code docs and source commit a39698f7",
            "observedAt": "2026-08-28"
          },
          "environmentProfile": "local-default",
          "qualifiers": [
            {
              "type": "protocol-revision",
              "value": "current documentation says VS Code implements the full MCP specification, but the inspected source declares LATEST_PROTOCOL_VERSION as 2025-11-25 rather than 2026-07-28"
            }
          ],
          "evidence": [
            {
              "resourceId": "microsoft-vscode-mcp-guide",
              "type": "documented",
              "observedAt": "2026-08-28"
            },
            {
              "resourceId": "microsoft-vscode-mcp-schema-source",
              "type": "documented",
              "observedAt": "2026-08-28"
            }
          ]
        }
      ]
    }
  ],
  "html": "/features/mcp-revision",
  "markdown": "/features/mcp-revision.md",
  "json": "/api/v1/features/mcp-revision.json",
  "body": "Implement or negotiate the exact dated MCP revision.\n\nThis row remains unknown for a product until exact, dated evidence covers this capability rather than MCP generally."
}