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Reimplement the MCP Apps ui-meta helpers (RESOURCE_MIME_TYPE, getToolUiResourceUri, isToolVisibilityModelOnly, isToolVisibilityAppOnly) in packages/api/src/mcp/apps.ts so @librechat/api no longer imports the ESM-only @modelcontextprotocol/ext-apps from its CommonJS build. ext-apps remains a client-only dependency, removing the require(ESM) boundary that throws ERR_REQUIRE_ESM on Node versions without synchronous require(esm) support. Add an mcpSettings.apps toggle (enabled unless explicitly false). Thread enableApps through connection creation so the io.modelcontextprotocol/ui capability is advertised only when apps are enabled, and gate the resource and app-tool-call routes with a requireMCPAppsEnabled middleware. Authorize app-driven resources/read against the resources and templates a server advertises, so a sandboxed app cannot proxy arbitrary uris. ui:// resources stay allowed and the check fails closed. Render MCP apps in shared and search transcripts display-only by withholding the host-bound bridge handlers and capabilities in read-only views, so an embedded app cannot call tools or read resources with the viewer's auth while the stored tool result still renders. |
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| .. | ||
| __tests__ | ||
| Artifacts | ||
| Config | ||
| Endpoints | ||
| Files | ||
| Runs | ||
| Skills | ||
| start | ||
| Threads | ||
| Tools | ||
| ActionService.js | ||
| ActionService.spec.js | ||
| AssistantService.js | ||
| AuthService.js | ||
| AuthService.spec.js | ||
| cleanup.js | ||
| createRunBody.js | ||
| GraphApiService.js | ||
| GraphApiService.spec.js | ||
| GraphTokenService.js | ||
| initializeMCPs.js | ||
| initializeMCPs.spec.js | ||
| initializeOAuthReconnectManager.js | ||
| MCP.js | ||
| MCP.spec.js | ||
| MCPRequestContext.js | ||
| OboPolicyService.js | ||
| OboTokenService.js | ||
| OboTokenService.spec.js | ||
| PermissionService.js | ||
| PermissionService.spec.js | ||
| PluginService.js | ||
| systemGrant.spec.js | ||
| ToolService.js | ||
| twoFactorService.js | ||