diff --git a/cli2.js b/cli2.js
index 434bd2a..f276b26 100644
--- a/cli2.js
+++ b/cli2.js
@@ -24,7 +24,7 @@ modelDialog.on('reasoningUpdate', (output) => {
     //const output = await modelDialog.interrogate('Can you remember "seven" ?');
     //console.log(output.output,JSON.stringify(output.reasoning,null,2));
     //const output2 = await modelDialog.interrogate('read a file that is what you remebered plus 1 as a word with txt ending, check that file.');
-    const output2 = await modelDialog.interrogate('Ersttelle eine beispiel business webseite für acme mit react und webpack. Lege die Dateien in /demo an');
+    const output2 = await modelDialog.interrogate('lege 5 Dateinen an, mache in jede eine webseite mit einem farbverlauf.');
     console.log('final output:',output2.output);
     console.log('reasoning:',output2.reasoning);
     console.log('Tokens:',output2.inputTokens,output2.cachedTokens,output2.outputTokens);
diff --git a/modelDialog.js b/modelDialog.js
index 5040091..20269b2 100644
--- a/modelDialog.js
+++ b/modelDialog.js
@@ -88,10 +88,10 @@ class ModelDialog {
             this.messagesSent.push(...messagesToSend);
 
             const call = {
-                model: 'gpt-5-nano',
+                model: 'gpt-5',
                 input: messagesToSend,
                 text: { format: { type: 'text' }, verbosity: 'low' },
-                reasoning: { effort: 'medium', summary: 'detailed' },
+                reasoning: { effort: 'low', summary: 'detailed' },
                 tools: Object.values(toolsByFile).map(t => t.def),
                 store: true,
                 previous_response_id: this.previousResponseId
@@ -174,4 +174,4 @@ class ModelDialog {
     }
 }
 
-export default ModelDialog;
\ No newline at end of file
+export default ModelDialog;
diff --git a/plan.md b/plan.md
new file mode 100644
index 0000000..e7e8ca3
--- /dev/null
+++ b/plan.md
@@ -0,0 +1,359 @@
+You're on the right track! You want to create a **Roundcube plugin** that allows users to **enhance or rewrite the email body using an LLM**, by sending the current message content to a backend API (your LLM service), then replacing the textarea content with the response.
+
+Here’s a complete working example of such a plugin, called `llm_compose_helper`. It adds a button to the compose screen, sends the current message text to a configured URL via AJAX, and replaces the message body with the LLM-generated result.
+
+---
+
+## ✅ Goal
+- Add a "Rewrite with AI" button in the compose window.
+- On click: open a popup asking the user for a rewrite prompt/instructions.
+- Submit both the current message body and the user prompt to the configured LLM API endpoint.
+- Replace the `<textarea>` content with the returned text.
+
+---
+
+## 📁 Plugin Structure
+```
+plugins/
+  llm_compose_helper/
+    llm_compose_helper.php     <-- Main plugin class
+    config.inc.php             <-- Configuration file
+    localization/en_US.inc     <-- Language labels
+    js/llm_compose_helper.js   <-- Client-side JavaScript
+```
+
+---
+
+## 1. `llm_compose_helper.php` – Plugin Class
+
+```php
+<?php
+
+/**
+ * LLM Compose Helper Plugin
+ *
+ * Allows rewriting the message body using an external LLM service
+ *
+ * @version 1.0
+ * @author You
+ * @license GPL
+ */
+class llm_compose_helper extends rcube_plugin
+{
+    public $task = 'mail';
+
+    function init()
+    {
+        // Load configuration
+        $this->load_config();
+
+        // Load localization texts (available in JS if second param = true)
+        $this->add_texts('localization/', true);
+
+        // Only run in compose view
+        $rcmail = rcmail::get_instance();
+        if ($rcmail->action == 'compose') {
+            // Include JS and CSS
+            $this->include_script('js/llm_compose_helper.js');
+
+            // Register UI placeholder handler
+            $this->register_handler('plugin.llm_button', array($this, 'llm_button'));
+        }
+    }
+
+    /**
+     * Generate the button HTML to be inserted into the toolbar
+     */
+    function llm_button()
+    {
+        $rcmail = rcmail::get_instance();
+        return html::tag('a', array(
+            'href'    => '#',
+            'id'      => 'llm_rewrite_button',
+            'class'   => 'button',
+            'title'   => $this->gettext('rewrite_with_llm'),
+            'onclick' => 'return false;'
+        ), $this->gettext('rewrite_label'));
+    }
+}
+```
+
+---
+
+## 2. `config.inc.php` – Plugin Configuration
+
+```php
+<?php
+
+// URL of your LLM API endpoint
+$config['llm_api_url'] = 'https://your-llm-api.example.com/rewrite';
+
+// Optional: headers (e.g., auth tokens)
+$config['llm_api_headers'] = array(
+    'Authorization: Bearer your-secret-token',
+    'Content-Type: application/json'
+);
+```
+
+> 💡 You can later override this in `config/config.inc.php` globally.
+
+---
+
+## 3. `localization/en_US.inc`
+
+```php
+<?php
+
+$labels = array(
+    'rewrite_with_llm' => 'Rewrite message with AI',
+    'rewrite_label'    => 'AI Rewrite',
+    'enter_prompt'     => 'Enter rewrite prompt',
+    'rewrite_submit'   => 'Rewrite',
+    'rewrite_cancel'   => 'Cancel',
+);
+
+$messages = array(
+    'prompt_placeholder' => 'e.g., Make it shorter and more formal',
+);
+```
+
+> Add other language files like `fr_FR.inc`, `de_DE.inc`, etc., if needed.
+
+---
+
+## 4. `js/llm_compose_helper.js` – Client-Side Logic
+
+```javascript
+// Wait for Roundcube to initialize
+rcmail.addEventListener('init', function() {
+    const button = document.getElementById('llm_rewrite_button');
+    if (!button) return;
+
+    // Insert button into compose toolbar
+    const toolbar = rcmail.gui_objects.toolbar;
+    if (toolbar) {
+        toolbar.appendChild(button);
+    }
+
+    // Attach click event
+    $(button).click(function(e) {
+        e.preventDefault();
+
+        const textarea = rcmail.env.html_editor ? rcmail.editor : document.getElementById('composebody');
+        let messageText;
+
+        // Get current message body
+        if (rcmail.env.html_editor && rcmail.editor && rcmail.editor.getData) {
+            messageText = rcmail.editor.getData(); // CKEditor
+        } else {
+            messageText = $('#composebody').val();
+        }
+
+        if (!messageText || messageText.trim() === '') {
+            alert(rcmail.gettext('non_empty', 'llm_compose_helper'));
+            return;
+        }
+
+        // Build prompt dialog content
+        var promptId = 'llm_prompt_input_' + Date.now();
+        var dialogHtml = '<div style="padding:8px 0">' +
+            '<label for="' + promptId + '">' + rcmail.gettext('enter_prompt', 'llm_compose_helper') + '</label>' +
+            '<textarea id="' + promptId + '" style="width:100%;height:120px;box-sizing:border-box;margin-top:6px" placeholder="' + (rcmail.gettext('prompt_placeholder', 'llm_compose_helper') || '') + '"></textarea>' +
+            '</div>';
+
+        var buttons = [
+            {
+                text: rcmail.gettext('rewrite_submit', 'llm_compose_helper'),
+                classes: 'mainaction',
+                click: function(e, ref) {
+                    var promptValue = document.getElementById(promptId).value || '';
+
+                    // Show loading
+                    rcmail.set_busy(true, 'loading');
+
+                    // Send to LLM API with message and prompt
+                    rcmail.http_post('plugin.llm_rewrite', {
+                        message: messageText,
+                        prompt: promptValue
+                    }, function() {
+                        rcmail.set_busy(false);
+                    });
+
+                    if (ref && ref.hide) ref.hide();
+                }
+            },
+            {
+                text: rcmail.gettext('rewrite_cancel', 'llm_compose_helper'),
+                click: function(e, ref) { if (ref && ref.hide) ref.hide(); }
+            }
+        ];
+
+        // Open Roundcube dialog
+        rcmail.show_popup_dialog(dialogHtml, rcmail.gettext('rewrite_with_llm', 'llm_compose_helper'), buttons, {modal: true, width: 520});
+    });
+});
+
+// Handle response from server
+rcmail.addEventListener('plugin.llm_rewrite_response', function(response) {
+    if (response.status === 'success' && response.text) {
+        const newText = response.text;
+
+        if (rcmail.env.html_editor && rcmail.editor && rcmail.editor.setData) {
+            rcmail.editor.setData(newText); // For CKEditor
+        } else {
+            $('#composebody').val(newText);
+        }
+
+        rcmail.showMessage(rcmail.gettext('rewrite_success', 'llm_compose_helper'), 'confirmation');
+    } else {
+        var errorMsg = response && response.message ? String(response.message) : rcmail.gettext('rewrite_error', 'llm_compose_helper');
+        rcmail.showMessage(errorMsg, 'error');
+    }
+});
+```
+
+---
+
+## 5. Extend `llm_compose_helper.php` – Add Server-Side Action
+
+Update the `llm_compose_helper.php` file to register the AJAX action and handle the request:
+
+```php
+function init()
+{
+    $this->load_config();
+    $this->add_texts('localization/', true);
+
+    $rcmail = rcmail::get_instance();
+    if ($rcmail->action == 'compose') {
+        $this->include_script('js/llm_compose_helper.js');
+        $this->register_handler('plugin.llm_button', array($this, 'llm_button'));
+
+        // Register custom action for AJAX
+        $this->register_action('plugin.llm_rewrite', array($this, 'action_handler'));
+    }
+}
+
+function action_handler()
+{
+    $rcmail = rcmail::get_instance();
+
+    // Get input
+    $message = rcube_utils::get_input_value('message', rcube_utils::INPUT_POST);
+    $prompt  = rcube_utils::get_input_value('prompt', rcube_utils::INPUT_POST);
+    if (empty($message)) {
+        $rcmail->output->command('plugin.llm_rewrite_response', [
+            'status' => 'error',
+            'message' => 'No message provided'
+        ]);
+        return;
+    }
+
+    // Get config
+    $api_url = $rcmail->config->get('llm_api_url');
+    if (!$api_url) {
+        $rcmail->output->command('plugin.llm_rewrite_response', [
+            'status' => 'error',
+            'message' => 'LLM API URL not configured'
+        ]);
+        return;
+    }
+
+    $headers = $rcmail->config->get('llm_api_headers', ['Content-Type: application/json']);
+
+    // Prepare request
+    $data = json_encode(['text' => $message, 'prompt' => $prompt]);
+
+    // Use file_get_contents or cURL
+    $options = [
+        'http' => [
+            'header'  => $headers,
+            'method'  => 'POST',
+            'content' => $data,
+            'timeout' => 30
+        ],
+        'ssl' => [
+            'verify_peer'       => true,
+            'verify_peer_name'  => true,
+            'cafile'            => '/etc/ssl/certs/ca-certificates.crt', // Adjust as needed
+        ]
+    ];
+
+    $context = stream_context_create($options);
+    $result = file_get_contents($api_url, false, $context);
+
+    if ($result === false) {
+        $rcmail->output->command('plugin.llm_rewrite_response', [
+            'status' => 'error',
+            'message' => 'Request failed'
+        ]);
+        return;
+    }
+
+    $response = json_decode($result, true);
+    $rewritten = isset($response['text']) && $response['text'] !== null ? $response['text'] : ($response['message'] ?? $result);
+
+    // Return success
+    $rcmail->output->command('plugin.llm_rewrite_response', [
+        'status' => 'success',
+        'text'   => $rewritten
+    ]);
+}
+```
+
+---
+
+## 6. Example LLM API Response Format (Expected)
+
+Your external LLM endpoint should accept POST JSON:
+
+```json
+{ "text": "Hello, I am writing to ask about...", "prompt": "Make it shorter and more formal" }
+```
+
+And return:
+
+```json
+{ "text": "Hi, I hope you're doing well. I'm reaching out to inquire about..." }
+```
+
+Ensure CORS is allowed if hosted separately.
+
+---
+
+## 7. Optional: Add More Labels
+
+In `localization/en_US.inc`, add:
+
+```php
+$messages = array(
+    'rewrite_success' => 'Message rewritten successfully!',
+    'rewrite_error'   => 'Failed to rewrite message.',
+    'non_empty'       => 'Please write something before using AI rewrite.'
+);
+```
+
+---
+
+## 8. Enable the Plugin
+
+In `config/config.inc.php`:
+
+```php
+$config['plugins'] = array(
+    // ... other plugins
+    'llm_compose_helper'
+);
+```
+
+---
+
+## ✅ Final Result
+
+When composing or replying:
+- A new button labeled "AI Rewrite" appears in the toolbar.
+- Clicking it opens a dialog asking for a rewrite prompt.
+- Submitting sends the current message and the prompt to your LLM API.
+- The response replaces the message body.
+- Works with plain text and HTML (via CKEditor if enabled).
+
diff --git a/src/ui/InkApp.jsx b/src/ui/InkApp.jsx
index 068aca3..3d7ac4e 100644
--- a/src/ui/InkApp.jsx
+++ b/src/ui/InkApp.jsx
@@ -3,6 +3,10 @@ import { Box, Text } from 'ink';
 import uiService from './uiService.js';
 import TextInput from 'ink-text-input';
 import terminalService from '../terminalService.js';
+import ModelDialog from '../../modelDialog.js';
+
+const sharedModelDialog = new ModelDialog();
+const npmSpinnerFrames = ['⠋','⠙','⠹','⠸','⠼','⠴','⠦','⠧','⠇','⠏'];
 
 class Pane extends React.Component {
     constructor(props) {
@@ -113,7 +117,9 @@ export default class InkApp extends React.Component {
             menuIndex: 0,
             model: 'gpt-5',
             reasoningEffort: 'minimal',
-            outputVerbosity: 'low'
+            outputVerbosity: 'low',
+            isLoading: false,
+            spinnerIndex: 0
         };
         this.handleSubmit = this.handleSubmit.bind(this);
         this.handleChange = this.handleChange.bind(this);
@@ -156,6 +162,12 @@ export default class InkApp extends React.Component {
             try { process.stdin.setRawMode(true); } catch {}
             process.stdin.on('data', this.onKeypress);
         }
+        // spinner timer
+        this._spinnerTimer = setInterval(() => {
+            if (this.state.isLoading) {
+                this.setState((s) => ({ spinnerIndex: (s.spinnerIndex + 1) % npmSpinnerFrames.length }));
+            }
+        }, 80);
     }
     componentWillUnmount() {
         if (this.terminalUnsub) {
@@ -169,6 +181,10 @@ export default class InkApp extends React.Component {
         if (process.stdin && process.stdin.off) {
             process.stdin.off('data', this.onKeypress);
         }
+        if (this._spinnerTimer) {
+            clearInterval(this._spinnerTimer);
+            this._spinnerTimer = null;
+        }
     }
 
     setPaneLines(stateKey, lines) {
@@ -205,21 +221,42 @@ export default class InkApp extends React.Component {
         this.setState({ input: value });
     }
 
-    handleSubmit() {
+    async handleSubmit() {
         const { input } = this.state;
         if (!input) return;
-        try {
-            terminalService.write(`${input}\r`);
-        } catch (e) {
-            // do not hide errors; show in logs
-            this.setState((state) => ({
-                logs: [...state.logs, `! write error: ${String(e && e.message ? e.message : e)}`],
-            }));
-        }
         this.setState((state) => ({
             logs: [...state.logs, `> ${input}`],
-            input: ''
+            input: '',
+            isLoading: true
         }));
+        try {
+            const result = await sharedModelDialog.interrogate(input);
+            const finalOutput = Array.isArray(result && result.output) ? result.output : [String(result && result.output ? result.output : '')];
+            const finalReasoning = Array.isArray(result && result.reasoning) ? result.reasoning : (result && result.reasoning ? [String(result.reasoning)] : []);
+            // Append to LLM output with a separator, overwrite chain of thought
+            this.setState((state) => ({
+                llmOutput: [
+                    ...state.llmOutput,
+                    ...(state.llmOutput.length ? ['----------'] : []),
+                    ...finalOutput
+                ]
+            }));
+            this.setChainOfThought(finalReasoning);
+            this.setState((state) => ({
+                logs: [
+                    ...state.logs,
+                    `tokens input: ${JSON.stringify(result && result.inputTokens)}`,
+                    `tokens cached: ${JSON.stringify(result && result.cachedTokens)}`,
+                    `tokens output: ${JSON.stringify(result && result.outputTokens)}`
+                ]
+            }));
+        } catch (e) {
+            this.setState((state) => ({
+                logs: [...state.logs, `! interrogate error: ${String(e && e.message ? e.message : e)}`]
+            }));
+        } finally {
+            this.setState({ isLoading: false });
+        }
     }
 
     toggleMenu(open) {
@@ -412,12 +449,16 @@ export default class InkApp extends React.Component {
                 )}
                 <Box marginTop={1}>
                     <Text>Input: </Text>
-                    <TextInput
-                        value={input}
-                        onChange={this.handleChange}
-                        onSubmit={this.handleSubmit}
-                        placeholder="Type and press Enter..."
-                    />
+                    {this.state.isLoading ? (
+                        <Text color="yellow">{npmSpinnerFrames[this.state.spinnerIndex]} Processing...</Text>
+                    ) : (
+                        <TextInput
+                            value={input}
+                            onChange={this.handleChange}
+                            onSubmit={this.handleSubmit}
+                            placeholder="Type and press Enter..."
+                        />
+                    )}
                 </Box>
             </Box>
         );
diff --git a/todo.md b/todo.md
new file mode 100644
index 0000000..0fabfff
--- /dev/null
+++ b/todo.md
@@ -0,0 +1,2 @@
+return the function call result via event.
+display function call evenst in logging
diff --git a/tools/read_file.js b/tools/read_file.js
index 84ff6ba..407dcc7 100644
--- a/tools/read_file.js
+++ b/tools/read_file.js
@@ -56,7 +56,7 @@ export async function run(args) {
             }
         }
         
-        return 'Filecontent: ´´´'+lines.join('')+'´´´';
+        return 'Filecontent: ´´´'+lines.join('\n')+'´´´';
     } catch (error) {
         return `read_file error: ${error.message}`;
     }