diff --git a/hubzilla/addon/cry01/Widget/Cry01.php b/hubzilla/addon/cry01/Widget/Cry01.php
new file mode 100644
index 0000000..7f10744
--- /dev/null
+++ b/hubzilla/addon/cry01/Widget/Cry01.php
@@ -0,0 +1,133 @@
+<?php
+
+namespace Zotlabs\Widget;
+
+/**
+ * Cry01 — sidebar widget.
+ * Renders the institutional directory for the cry01 addon.
+ * Follows the standard four-tab pattern: Core, Tier-I, Tier-II, Other.
+ */
+class Cry01 {
+
+    public function widget($arr) {
+        // Loads listings and renders the four-tab institutional directory.
+        if (!function_exists('cry01_load_config')) {
+            require_once 'addon/cry01/cry01_chain.php';
+        }
+        $config   = cry01_load_config();
+        $path     = $config['listings_file'] ?? '';
+        $listings = $this->load_listings($path);
+        return $this->render_directory($listings, $config);
+    }
+
+    private function load_listings($path) {
+        // Loads listings.json from the operator-configured path.
+        if (!$path) return ['core' => [], 'tier1' => [], 'tier2' => [], 'other' => []];
+        $raw = @file_get_contents($path);
+        if ($raw === false) return ['core' => [], 'tier1' => [], 'tier2' => [], 'other' => []];
+        $data = json_decode($raw, true);
+        return (json_last_error() === JSON_ERROR_NONE)
+            ? $data
+            : ['core' => [], 'tier1' => [], 'tier2' => [], 'other' => []];
+    }
+
+    private function render_directory($listings, $config) {
+        // Renders the four-tab Bootstrap directory widget.
+        $default_tab = $config['directory_default_tab'] ?? 'core';
+        $uid = 'cry01-dir-' . substr(md5(uniqid()), 0, 6);
+
+        $tabs = [
+            'core'  => 'Core',
+            'tier1' => 'Tier-I',
+            'tier2' => 'Tier-II',
+            'other' => 'Other',
+        ];
+
+        $out  = '<div class="cry01-directory">';
+        $out .= '<ul class="nav nav-tabs nav-tabs-sm mb-2" id="' . $uid . '-tabs" role="tablist">';
+        foreach ($tabs as $key => $label) {
+            $active = ($key === $default_tab) ? 'active' : '';
+            $out .= '<li class="nav-item" role="presentation">';
+            $out .= '<button class="nav-link ' . $active . '" id="' . $uid . '-' . $key . '-tab"
+                             data-bs-toggle="tab"
+                             data-bs-target="#' . $uid . '-' . $key . '"
+                             type="button" role="tab">' . $this->h($label) . '</button>';
+            $out .= '</li>';
+        }
+        $out .= '</ul>';
+
+        $out .= '<div class="tab-content">';
+        foreach ($tabs as $key => $label) {
+            $active = ($key === $default_tab) ? 'show active' : '';
+            $out .= '<div class="tab-pane fade ' . $active . '" id="' . $uid . '-' . $key . '" role="tabpanel">';
+            $out .= ($key === 'core')
+                ? $this->render_core_tab($listings['core'] ?? [])
+                : $this->render_tier_tab($listings[$key] ?? [], $label);
+            $out .= '</div>';
+        }
+        $out .= '</div></div>';
+        return $out;
+    }
+
+    private function render_core_tab($core) {
+        // Renders the three permanent Core slots. Pending slots show invitation text.
+        $slots = [
+            'taxonomy-authority'  => ['role' => 'Taxonomy Authority',    'desc' => 'The institutional source of the case law categories this diagnostic record is organized by.'],
+            'methodology-certifier' => ['role' => 'Methodology Certifier', 'desc' => 'The law firm whose professional association with this project certifies the diagnostic record meets a standard the legal community can use.'],
+            'peer-operator'       => ['role' => 'Peer Operator',         'desc' => 'The cooperating Civic Infrastructure host who can independently verify, support, and if necessary continue this diagnostic record.'],
+        ];
+
+        $indexed = [];
+        foreach ($core as $entry) {
+            $indexed[$entry['slot'] ?? ''] = $entry;
+        }
+
+        $out = '';
+        foreach ($slots as $slot_id => $slot_def) {
+            $entry  = $indexed[$slot_id] ?? [];
+            $status = $entry['status'] ?? 'pending';
+            $out .= '<div class="cry01-dir-slot mb-2">';
+            if ($status === 'pending' || empty($entry['name'])) {
+                $out .= '<div class="text-muted small fw-semibold">' . $this->h($slot_def['role']) . '</div>';
+                $out .= '<div class="text-muted small">' . $this->h($slot_def['desc']) . '</div>';
+                $out .= '<div class="text-muted small fst-italic">Invitation pending</div>';
+            } else {
+                $url  = $entry['url'] ?? '';
+                $name = $this->h($entry['name']);
+                $out .= '<div class="small fw-semibold">';
+                $out .= $url ? '<a href="' . $this->h($url) . '" target="_blank" rel="noopener">' . $name . '</a>' : $name;
+                $out .= '</div>';
+                $out .= '<div class="text-muted small">' . $this->h($slot_def['role']) . '</div>';
+            }
+            $out .= '</div>';
+        }
+        return $out;
+    }
+
+    private function render_tier_tab($entries, $label) {
+        // Renders a tier tab. Shows placeholder text if no entries.
+        if (empty($entries)) {
+            return '<p class="text-muted small fst-italic">No ' . $this->h($label) . ' listings yet.</p>';
+        }
+        $out = '';
+        foreach ($entries as $entry) {
+            $name = $this->h($entry['name'] ?? '');
+            $role = $this->h($entry['role'] ?? '');
+            $url  = $entry['url'] ?? '';
+            $desc = $this->h($entry['description'] ?? '');
+            $out .= '<div class="cry01-dir-entry mb-2">';
+            $out .= '<div class="small fw-semibold">';
+            $out .= $url ? '<a href="' . $this->h($url) . '" target="_blank" rel="noopener">' . $name . '</a>' : $name;
+            $out .= '</div>';
+            if ($role) $out .= '<div class="text-muted small">' . $role . '</div>';
+            if ($desc) $out .= '<div class="text-muted small">' . $desc . '</div>';
+            $out .= '</div>';
+        }
+        return $out;
+    }
+
+    private function h($value) {
+        // HTML-escapes a value for safe output.
+        return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
+    }
+}