diff --git a/electron/main/ipc-handlers.ts b/electron/main/ipc-handlers.ts
index a5f7423..4e022af 100644
--- a/electron/main/ipc-handlers.ts
+++ b/electron/main/ipc-handlers.ts
@@ -820,7 +820,7 @@ export function setupIpcHandlers(pythonBridge: PythonBridge, getWindow: WindowGe
   })
 
   // Run a process extension in an isolated worker thread
-  ipcMain.handle('extensions:runProcess', async (_, extensionId: string, input: { filePath?: string; text?: string }, params: Record<string, unknown>) => {
+  ipcMain.handle('extensions:runProcess', async (_, extensionId: string, nodeId: string, input: { filePath?: string; text?: string }, params: Record<string, unknown>) => {
     const userData        = app.getPath('userData')
     const { extensionsDir, workspaceDir } = getSettings(userData)
 
@@ -848,7 +848,7 @@ export function setupIpcHandlers(pythonBridge: PythonBridge, getWindow: WindowGe
         runner = getProcessRunner(extensionId, extDir, entry, workspaceDir, app.getPath('temp'))
       }
 
-      const result = await runner.run(input, params)
+      const result = await runner.run(input, params, nodeId)
       return { success: true, result }
     } catch (err) {
       return { success: false, error: String(err) }
diff --git a/electron/main/process-runner.ts b/electron/main/process-runner.ts
index ca20fd3..d95322c 100644
--- a/electron/main/process-runner.ts
+++ b/electron/main/process-runner.ts
@@ -32,6 +32,7 @@ parentPort.on('message', async (msg) => {
     const context = {
       workspaceDir: workerData.workspaceDir,
       tempDir:      workerData.tempDir,
+      nodeId:       msg.nodeId ?? '',
       log:      (m)         => parentPort.postMessage({ type: 'log',      message: String(m) }),
       progress: (pct, label) => parentPort.postMessage({ type: 'progress', percent: pct, label }),
     }
@@ -59,6 +60,7 @@ export interface IProcessRunner {
   run(
     input:       ProcessInput,
     params:      Record<string, unknown>,
+    nodeId?:     string,
     onProgress?: (percent: number, label: string) => void,
     onLog?:      (message: string) => void,
   ): Promise<ProcessResult>
@@ -116,6 +118,7 @@ export class ProcessRunner implements IProcessRunner {
   async run(
     input:  ProcessInput,
     params: Record<string, unknown>,
+    nodeId?:     string,
     onProgress?: (percent: number, label: string) => void,
     onLog?:      (message: string) => void,
   ): Promise<ProcessResult> {
@@ -138,7 +141,7 @@ export class ProcessRunner implements IProcessRunner {
       }
 
       worker.on('message', handler)
-      worker.postMessage({ action: 'run', input, params })
+      worker.postMessage({ action: 'run', input, params, nodeId: nodeId ?? '' })
     })
   }
 
@@ -170,6 +173,7 @@ export class PythonProcessRunner implements IProcessRunner {
   async run(
     input:  ProcessInput,
     params: Record<string, unknown>,
+    nodeId?:     string,
     onProgress?: (percent: number, label: string) => void,
     onLog?:      (message: string) => void,
   ): Promise<ProcessResult> {
@@ -182,6 +186,7 @@ export class PythonProcessRunner implements IProcessRunner {
       proc.stdin.write(JSON.stringify({
         input,
         params,
+        nodeId:       nodeId ?? '',
         workspaceDir: this.workspaceDir,
         tempDir:      this.tempDir,
       }) + '\n')
diff --git a/electron/preload/index.ts b/electron/preload/index.ts
index 24cf987..7828a9a 100644
--- a/electron/preload/index.ts
+++ b/electron/preload/index.ts
@@ -147,10 +147,11 @@ contextBridge.exposeInMainWorld('electron', {
 
     runProcess: (
       extensionId: string,
+      nodeId:      string,
       input:       { filePath?: string; text?: string },
       params:      Record<string, unknown>,
     ): Promise<{ success: boolean; result?: { filePath?: string; text?: string }; error?: string }> =>
-      ipcRenderer.invoke('extensions:runProcess', extensionId, input, params),
+      ipcRenderer.invoke('extensions:runProcess', extensionId, nodeId, input, params),
 
     onInstallProgress: (cb: (data: {
       step: 'downloading' | 'extracting' | 'validating' | 'setting_up' | 'done' | 'error'
diff --git a/src/areas/workflows/useWorkflowRunner.ts b/src/areas/workflows/useWorkflowRunner.ts
index db6124b..0407820 100644
--- a/src/areas/workflows/useWorkflowRunner.ts
+++ b/src/areas/workflows/useWorkflowRunner.ts
@@ -175,9 +175,12 @@ export function useWorkflowRunner(allExtensions: WorkflowExtension[]) {
 
         } else {
           // ── Process extension ────────────────────────────────────────────────
-          const extId = (node.data.extensionId ?? '').split('/')[0]
+          const parts  = (node.data.extensionId ?? '').split('/')
+          const extId  = parts[0]
+          const nodeId = parts[1] ?? ''
           const result = await window.electron.extensions.runProcess(
             extId,
+            nodeId,
             { filePath: nodeInputPath, text: nodeInputText },
             node.data.params as Record<string, unknown>,
           )
diff --git a/src/areas/workflows/workflowRunStore.ts b/src/areas/workflows/workflowRunStore.ts
index 85b3a4d..42c15f0 100644
--- a/src/areas/workflows/workflowRunStore.ts
+++ b/src/areas/workflows/workflowRunStore.ts
@@ -196,9 +196,12 @@ export const useWorkflowRunStore = create<WorkflowRunStore>((set) => ({
           }
 
         } else {
-          const extId  = (node.data.extensionId ?? '').split('/')[0]
+          const parts  = (node.data.extensionId ?? '').split('/')
+          const extId  = parts[0]
+          const nodeId = parts[1] ?? ''
           const result = await window.electron.extensions.runProcess(
             extId,
+            nodeId,
             { filePath: nodeInputPath, text: nodeInputText },
             node.data.params as Record<string, unknown>,
           )
diff --git a/src/shared/types/electron.d.ts b/src/shared/types/electron.d.ts
index 7b1e60b..a6acbe8 100644
--- a/src/shared/types/electron.d.ts
+++ b/src/shared/types/electron.d.ts
@@ -214,7 +214,7 @@ declare global {
         uninstall:   (extensionId: string) => Promise<{ success: boolean; error?: string }>
         repair:      (extensionId: string) => Promise<{ success: boolean; error?: string }>
         reload:      () => Promise<{ success: boolean; error?: string; errors?: Record<string, string> }>
-        runProcess:  (extensionId: string, input: ProcessInput, params: Record<string, unknown>) => Promise<{ success: boolean; result?: ProcessResult; error?: string }>
+        runProcess:  (extensionId: string, nodeId: string, input: ProcessInput, params: Record<string, unknown>) => Promise<{ success: boolean; result?: ProcessResult; error?: string }>
         onInstallProgress: (cb: (data: {
           step:          'downloading' | 'extracting' | 'validating' | 'setting_up' | 'done' | 'error'
           percent?:      number