diff --git a/app/Config/Reporting/ConfigReport.php b/app/Config/Reporting/ConfigReport.php
new file mode 100644
--- /dev/null
+++ b/app/Config/Reporting/ConfigReport.php
@@ -0,0 +1,79 @@
+<?php
+
+namespace Nasqueron\Notifications\Config\Reporting;
+
+use Nasqueron\Notifications\Config\Features;
+
+use Config;
+use Services;
+
+class ConfigReport {
+
+    ///
+    /// Public properties
+    ///
+
+    /**
+     * @var string[]
+     */
+    public $gates;
+
+    /**
+     * @var FeatureReportEntry[]
+     */
+    public $features;
+
+    /**
+     * @var ServiceReportEntry[]
+     */
+    public $services;
+
+    ///
+    /// Public constructor
+    ///
+
+    public function __construct () {
+        $this->gates = $this->queryGates();
+        $this->features = $this->queryFeatures();
+        $this->services = $this->queryServices();
+    }
+
+    ///
+    /// Report builder
+    ///
+
+    /**
+     * @return string[]
+     */
+    protected function queryGates () : array {
+        return Config::get('gate.controllers');
+    }
+
+    /**
+     * @return FeatureReportEntry[]
+     */
+    protected function queryFeatures () : array {
+        $features = [];
+
+        foreach (Features::getAll() as $feature => $enabled) {
+            $features[] = new FeatureReportEntry($feature, $enabled);
+        }
+
+        return $features;
+    }
+
+    /**
+     * @return ServiceReportEntry[]
+     */
+    protected function queryServices () : array {
+        $services = [];
+
+        foreach (Services::get() as $service) {
+            $services[] = new ServiceReportEntry($service);
+        }
+
+        return $services;
+    }
+
+
+}
diff --git a/app/Config/Reporting/FeatureReportEntry.php b/app/Config/Reporting/FeatureReportEntry.php
new file mode 100644
--- /dev/null
+++ b/app/Config/Reporting/FeatureReportEntry.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Nasqueron\Notifications\Config\Reporting;
+
+class FeatureReportEntry {
+
+    ///
+    /// Public properties
+    ///
+
+    /**
+     * @var string
+     */
+    public $name;
+
+    /**
+     * @var bool
+     */
+    public $enabled;
+
+    ///
+    /// Constructor
+    ///
+
+    /**
+     * Initializes a new instance of the FeatureReportEntry class.
+     *
+     * @var name The feature name
+     * @var bool If the feature enabled, true. Otherwise, false.
+     */
+    public function __construct (string $name, bool $enabled) {
+        $this->name = $name;
+        $this->enabled = $enabled;
+    }
+
+}
diff --git a/app/Config/Reporting/ServiceReportEntry.php b/app/Config/Reporting/ServiceReportEntry.php
new file mode 100644
--- /dev/null
+++ b/app/Config/Reporting/ServiceReportEntry.php
@@ -0,0 +1,102 @@
+<?php
+
+namespace Nasqueron\Notifications\Config\Reporting;
+
+use Nasqueron\Notifications\Config\Services\Service;
+
+use ProjectsMap;
+
+class ServiceReportEntry {
+
+    ///
+    /// Private members
+    ///
+
+    /**
+     * @var Service
+     */
+    private $service;
+
+    ///
+    /// Public properties
+    ///
+
+    /**
+     * @var string
+     */
+    public $gate;
+
+    /**
+     * @var string
+     */
+    public $door;
+
+    /**
+     * @var string
+     */
+    public $instance;
+
+    /**
+     * @var string
+     */
+    public $status = "";
+
+    ///
+    /// Constructor
+    ///
+
+    /**
+     * Initializes a new instance of the ServiceReportEntry class.
+     *
+     * @param \Nasqueron\Notifications\Config\Services\Service $service The service
+     */
+    public function __construct (Service $service) {
+        $this->service = $service;
+        $this->query();
+    }
+
+    ///
+    /// Report builder
+    ///
+
+    /**
+     * Queries the service to fill public properties.
+     */
+    protected function query () : void {
+        // Direct properties
+        $this->gate = $this->service->gate;
+        $this->door = $this->service->door;
+        $this->instance = (string)$this->service->instance;
+
+        // Properties to query with business logic
+        $this->status = $this->getServiceStatus();
+    }
+
+    /**
+     * @return string An issue to fix, or an empty string if all looks good.
+     */
+    protected function getServiceStatus () : string {
+        if ($this->isPhabricatorServiceWithNotCachedProjectsMap()) {
+            return "Projects map not cached.";
+        }
+
+        return "";
+    }
+
+    /**
+     * Determines if the service matches the following issue to report:
+     *   - service is Phabricator
+     *   - instance doesn't have the projects' name/PHID map in cache
+     *
+     * @return bool
+     */
+    protected function isPhabricatorServiceWithNotCachedProjectsMap () : bool {
+        if ($this->service->gate !== 'Phabricator') {
+            return false;
+        }
+
+        $map = ProjectsMap::fetch($this->service->door);
+        return !$map->isCached();
+    }
+
+}
diff --git a/app/Http/routes.php b/app/Http/routes.php
--- a/app/Http/routes.php
+++ b/app/Http/routes.php
@@ -1,6 +1,7 @@
 <?php
 
 use Nasqueron\Notifications\Config\Features;
+use Nasqueron\Notifications\Config\Reporting\ConfigReport;
 
 /*
 |--------------------------------------------------------------------------
@@ -22,6 +23,14 @@
 	return "ALIVE";
 });
 
+// Allows to external tool to check the current configuration.
+if (Features::isEnabled('GetConfig')) {
+    Route::get('/config', function() {
+        $report = new ConfigReport();
+        return Response::json($report);
+    });
+}
+
 // Gate controllers
 if (Features::isEnabled('Gate')) {
     foreach (Config::get('gate.controllers') as $controller) {
diff --git a/config/app.php b/config/app.php
--- a/config/app.php
+++ b/config/app.php
@@ -125,6 +125,9 @@
         // Enable the API entry point at the /gate URL
         'Gate' => true,
 
+        // Enable the configuration report entry point at the /config URL
+        'GetConfig' => true,
+
         // Send a response to inform the caller of the different actions done.
         // If disabled, send an empty 200 response instead.
         'ActionsReport' => true,
diff --git a/tests/data/config.json b/tests/data/config.json
new file mode 100644
--- /dev/null
+++ b/tests/data/config.json
@@ -0,0 +1,32 @@
+{
+    "gates": [
+        "DockerHub",
+        "GitHub",
+        "Jenkins",
+        "Phabricator"
+    ],
+    "features": [
+        {
+            "name": "Gate",
+            "enabled": true
+        },
+        {
+            "name": "ActionsReport"
+            "enabled": true
+        }
+    ],
+    "services": [
+        {
+            "gate": "GitHub",
+            "door": "Nasqueron",
+            "instance": "",
+            "status": ""
+        },
+        {
+            "gate": "Phabricator",
+            "door": "Nasqueron",
+            "instance": "https://devcentral.nasqueron.org",
+            "status": ""
+        }
+    ]
+}