Add external MCP server support (stdio JSON-RPC)

Lets the AI connect to any external stdio MCP server (e.g. safaridriver --mcp) configured in Settings, with tools auto-discovered and prefixed by server slug. Includes crash detection with backoff restart (5s/15s/30s) and a Settings UI to add/enable/disable/remove servers. Fixes the temp-dir allowlist in MCPService.isPathAllowed to also match /tmp and /private/tmp (not just NSTemporaryDirectory(), which resolves to a different per-user Darwin temp dir) so the MCP file tools can actually read files external servers and image generation write there. Also switches the Add Server sheet's argument parsing to a quote-aware tokenizer so args containing spaces survive intact. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-14 08:01:00 +02:00
parent f2949cea3b
commit e6f965ff19
9 changed files with 937 additions and 2 deletions
@@ -461,6 +461,48 @@ class SettingsService {
        }
    }

+    // MARK: - External MCP Servers
+
+    var externalMCPServers: [ExternalMCPServer] {
+        get {
+            guard let json = cache["externalMCPServers"],
+                  let data = json.data(using: .utf8) else { return [] }
+            let decoder = JSONDecoder()
+            decoder.dateDecodingStrategy = .iso8601
+            return (try? decoder.decode([ExternalMCPServer].self, from: data)) ?? []
+        }
+        set {
+            let encoder = JSONEncoder()
+            encoder.dateEncodingStrategy = .iso8601
+            if let data = try? encoder.encode(newValue),
+               let json = String(data: data, encoding: .utf8) {
+                cache["externalMCPServers"] = json
+                DatabaseService.shared.setSetting(key: "externalMCPServers", value: json)
+            }
+            Task { @MainActor in ExternalMCPManager.shared.reconfigure(servers: newValue) }
+        }
+    }
+
+    func addExternalMCPServer(_ server: ExternalMCPServer) {
+        externalMCPServers = externalMCPServers + [server]
+    }
+
+    func updateExternalMCPServer(_ server: ExternalMCPServer) {
+        externalMCPServers = externalMCPServers.map { $0.id == server.id ? server : $0 }
+    }
+
+    func deleteExternalMCPServer(id: UUID) {
+        externalMCPServers = externalMCPServers.filter { $0.id != id }
+    }
+
+    func toggleExternalMCPServer(id: UUID) {
+        externalMCPServers = externalMCPServers.map { s in
+            s.id == id ? ExternalMCPServer(id: s.id, name: s.name, command: s.command,
+                                           args: s.args, isEnabled: !s.isEnabled,
+                                           timeout: s.timeout, createdAt: s.createdAt) : s
+        }
+    }
+
    // MARK: - Favorite Models

    var favoriteModelIds: Set<String> {