README

Tracy BlueScreen panel that formats errors for AI-assisted debugging. One-click error export to Claude Code and other AI coding assistants.

What it does

When a PHP error occurs, this panel appears on Tracy's BlueScreen with a "Copy for Claude" button. One click copies a structured error summary to your clipboard, ready to paste into Claude Code or any AI assistant.

Example output:

Error: Warning — Undefined variable $person
URL: GET http://localhost:8080/admin/employee/5
Presenter: User:Admin:EmployeeDetail:default
File: app/Modules/User/Presentation/Admin/EmployeeDetail/default.latte:42

Source:
   38:     <div class="grid grid-cols-2 gap-4">
   39:         <div>
   40:             <dt>Employee ID</dt>
   41:             <dd>{$employee->getNumber()}</dd>
 → 42:         {if $person->getOffice()}
   43:             <dt>Office</dt>
   44:             <dd>{$person->getOffice()}</dd>
   45:         </div>
   46:     </div>

Stack (app only):
  app/Shared/Components/admin-card.latte:50 LatteTemplate::main()
  app/Modules/User/Presentation/Admin/EmployeeDetail/default.latte:42 LatteTemplate::renderBlock()

Example with vendor-originated error (e.g. invalid Nette link):

Error: User Warning — Invalid link: Missing parameter $id required by ProfilePresenter::actionDefault()
URL: GET http://localhost:8080/admin/external-lecturers/2/detail
Presenter: User:Admin:ExternalLecturerDetail:default
File: app/Modules/User/Presentation/Admin/ExternalLecturerDetail/ExternalLecturerDetailPresenter.php:63

Source:
   59:         $this['pageHeader']->setBackLink($this->link('ExternalLecturers:default'));
   60:
   61:         if ($this->getUser()->isAllowed('ExternalLecturers', 'edit')) {
   62:             if ($person->getSlug()) {
 → 63:                 $this['pageHeader']->add('Profile', $this->link(':User:Front:Profile:default', ['slug' => $person->getSlug()]))
   64:                     ->setIcon('visibility');
   65:             }
   66:         }
   67:     }

Args: Component::link(':User:Front:Profile:default', ['slug': 'ivan-omavka'])

Stack (app only):
  app/Modules/User/Presentation/Admin/ExternalLecturerDetail/ExternalLecturerDetailPresenter.php:63 Component::link()

Features

• Error info — type, message, file, line number
• URL + HTTP method — GET http://localhost:8080/admin/users
• Nette presenter:action — User:Admin:EmployeeDetail:default (auto-detected via Application event, works with any mapping)
• Smart file resolution — when error originates in vendor code (e.g. trigger_error inside Nette), resolves to the first app-level frame where the problem actually is
• Function arguments — shows the arguments of the call that triggered the error (scalars, short arrays, class names for objects)
• Latte template resolution — maps compiled PHP back to original .latte file and line number (supports Latte 2 and 3)
• Source code snippet — shows code around the error with → marker
• Doctrine SQL — extracts query + parameters from DBAL exceptions
• Filtered stack trace — only your app files, no vendor noise; Latte frames resolved to .latte paths
• Chained exceptions — shows the full cause chain with circular reference protection

Installation

composer require --dev pupocz/tracy-claude-panel

Nette Framework

Register the extension in your config (e.g. config/common.neon):

extensions:
    tracyClaudePanel: PuPoC\TracyClaudePanel\Bridge\Nette\TracyClaudePanelExtension

That's it. The extension registers the panel and hooks into Application::$onRequest for presenter detection. It only activates in debug mode.

Standalone Tracy (without Nette)

Register manually in your bootstrap after enabling Tracy:

use PuPoC\TracyClaudePanel\ClaudeBlueScreenPanel;

Tracy\Debugger::enable();
ClaudeBlueScreenPanel::register(__DIR__ . '/app');

The argument is the absolute path to your application source directory. Files outside this directory are filtered from the stack trace.

Optional: Presenter detection for standalone usage

$application->onRequest[] = [ClaudeBlueScreenPanel::class, 'onRequest'];

Requirements

• PHP 8.1+
• Tracy 2.10+

Optional (auto-detected when available)

• nette/application — for presenter:action context
• latte/latte — for template source resolution (Latte 2 and 3)
• doctrine/dbal — for SQL query extraction

How it works

1. Registers a panel on Tracy's BlueScreen via addPanel()
2. When an error occurs, builds a structured text summary
3. If the error originates in vendor code, walks the stack trace to find the first app-level frame
4. Resolves compiled Latte templates to original .latte files using source comments and position markers
5. For Nette apps, uses the Application::$onRequest event to capture the current presenter name before the error happens
6. Renders a "Copy for Claude" button that copies the summary to clipboard

License

MIT