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fix: update MCP Apps to use new _meta.ui.resourceUri format #28

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Merged
jerome3o-anthropic merged 1 commit into from
Jan 14, 2026
Merged

fix: update MCP Apps to use new _meta.ui.resourceUri format #28

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2 changes: 1 addition & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@
"clean": "rm -rf dist"
},
"dependencies": {
"@modelcontextprotocol/ext-apps": "https://pkg.pr.new/modelcontextprotocol/ext-apps/@modelcontextprotocol/ext-apps@95663d4",
"@modelcontextprotocol/ext-apps": "^0.4.0",
"@modelcontextprotocol/sdk": "^1.24.2",
"@redis/client": "^1.6.0",
"cors": "^2.8.5",
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17 changes: 14 additions & 3 deletions src/modules/mcp/services/mcp.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,6 @@ enum ToolName {
}

// MCP Apps constants
const RESOURCE_URI_META_KEY = "ui/resourceUri";
const HELLO_WORLD_APP_URI = "ui://hello-world/app.html";

enum PromptName {
Expand Down Expand Up @@ -492,7 +491,7 @@ export const createMcpServer = (): McpServerWrapper => {
description:
"Demonstrates MCP Apps - returns an interactive UI that runs in the client",
inputSchema: { type: "object", properties: {} },
_meta: { [RESOURCE_URI_META_KEY]: HELLO_WORLD_APP_URI },
_meta: { ui: { resourceUri: HELLO_WORLD_APP_URI } },
},
];

Expand Down Expand Up @@ -767,7 +766,19 @@ export const createMcpServer = (): McpServerWrapper => {
text: "If this client supports MCP Apps, an interactive UI should have rendered for the user.",
},
],
_meta: { [RESOURCE_URI_META_KEY]: HELLO_WORLD_APP_URI },
structuredContent: {
greeting: "Hello from MCP Apps!",
timestamp: new Date().toISOString(),
features: ["interactive UI", "bidirectional communication", "theme support"],
stats: {
version: "1.0.0",
requestCount: Math.floor(Math.random() * 1000),
},
},
_meta: {
exampleKey: "exampleValue",
processed: true,
},
};
}

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