diff --git a/.gitignore b/.gitignore
index 7bb4750..75327c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,9 @@ output/qr-codes
 # Served icons
 output/icons
 
+# Served listings
+listings/lp-output
+
 # Server-side cache
 cache
 
diff --git a/.phpenv b/.phpenv
index ea4ce88..a6eb760 100644
--- a/.phpenv
+++ b/.phpenv
@@ -11,23 +11,13 @@
 	$ROOM_ICONS="$DOCUMENT_ROOT/icons";
 	$ROOM_ICONS_RELATIVE="icons";
 
-	$REPOSITORY_CANONICAL_URL="https://codeberg.org/gravel/sessioncommunities.online";
-
-	include_once "$PROJECT_ROOT/php/utils/logging.php";
-
-	// Read the -v|--verbose option increasing logging verbosity to debug.
-	$options = getopt("vn", ["verbose", "fast", "no-color", "dry-run"]);
-	if (isset($options["v"]) or isset($options["verbose"])) {
-		$LOGGING_VERBOSITY = LoggingVerbosity::Debug;
-	}
+	$LISTING_PROVIDER_ROOT="$PROJECT_ROOT/listings";
+	$LISTINGS_INI="$LISTING_PROVIDER_ROOT/listings.ini";
+	$LISTING_PROVIDER_OUTPUT="$LISTING_PROVIDER_ROOT/lp-output";
+	$LISTING_PROVIDER_LISTING_SUMMARY="$LISTING_PROVIDER_OUTPUT/listings";
+	$LISTING_PROVIDER_LISTINGS="$LISTING_PROVIDER_OUTPUT/listing";
 
-	$FAST_FETCH_MODE = (isset($options["fast"]));
-
-	$DO_DRY_RUN = (isset($options["n"]) || isset($options["dry-run"]));
-
-	if (isset($options["no-color"])) {
-		LoggingVerbosity::$showColor = false;
-	}
+	$REPOSITORY_CANONICAL_URL="https://codeberg.org/gravel/sessioncommunities.online";
 
 	// set timeout for file_get_contents()
 	ini_set('default_socket_timeout', 6); // in seconds, default is 60
diff --git a/Makefile b/Makefile
index 891a518..79933bd 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,10 @@ list:
 ## Using make dependencies is duplicating behaviour but reads better.
 # /bin/php php/update-listing.php
 # Refresh listing and generate HTML.
-all: fetch html
+sco: fetch html
+
+# Refresh listing, generate HTML and update listing provider.
+all: fetch html listing
 
 # Fetch room listing.
 fetch:
@@ -26,6 +29,10 @@ fetch-dry:
 html:
 	/bin/php php/generate-html.php $(FLAGS)
 
+# Generate listing provider endpoints from data.
+listing:
+	/bin/php php/generate-listings.php $(FLAGS)
+
 # Serve a local copy which responds to file changes.
 dev: FLAGS = --verbose
 dev: open
diff --git a/listings/listings.ini b/listings/listings.ini
new file mode 100644
index 0000000..1a0c8d6
--- /dev/null
+++ b/listings/listings.ini
@@ -0,0 +1,106 @@
+
+[regional]
+name=Regional Communities
+rating=safe
+rooms[]=brasil+118d
+rooms[]=deutsch+118d
+rooms[]=espanol+118d
+rooms[]=francais+118d
+rooms[]=iom+118d
+rooms[]=italiano+118d
+rooms[]=nl+118d
+rooms[]=persian+118d
+rooms[]=portugues+118d
+rooms[]=uk+118d
+rooms[]=russian+118d
+rooms[]=bangladesh+13f6
+rooms[]=czsk+13f6
+rooms[]=india+13f6
+rooms[]=indonesia+13f6
+rooms[]=korea+13f6
+rooms[]=poland+13f6
+rooms[]=scandinavia+2812
+rooms[]=fi+2812
+rooms[]=br+2b92
+rooms[]=germanpoliticssocietyphilosophy+8183
+sogs[]=fe93941471c07f294255391dba92ae3cf356efc4fdd287d8ba1ffef096dbaf56
+
+[tech]
+name=Tech Communities
+rating=safe
+rooms[]=android+118d
+rooms[]=ai+118d
+rooms[]=gaming+118d
+rooms[]=im+118d
+rooms[]=linux+118d
+rooms[]=webdev+118d
+rooms[]=programming+13f6
+rooms[]=tech+2054
+rooms[]=ev-en+2812
+rooms[]=pv-en+2812
+rooms[]=gee+2b92
+rooms[]=mathnodes-dvpn-oxen-dero+8585
+rooms[]=plex+c01b
+
+[china]
+name=Chinese-language Communities
+rating=unknown
+sogs[]=45674f4135e2dd929279a72e1e73957eed741c7bec00c87b1797ad52c235ea36
+sogs[]=7f55510a392324988041e7a97191f618a32dc05f2f6343de917fcfe1cb424e51
+
+[powerusers]
+name=Communities for Powerusers
+rating=safe
+rooms[]=snops+118d
+rooms[]=sogops+118d
+rooms[]=indexloki+2cbd
+rooms[]=SNappsDevs+2cbd
+rooms[]=sessiondev+e56f
+
+[misc]
+name=Miscellanous
+rating=unknown
+rooms[]=health+118d
+rooms[]=music+118d
+rooms[]=modernsurvival+118d
+rooms[]=philosophy+118d
+rooms[]=pol+2054
+rooms[]=biz+2b92
+rooms[]=guns+2b92
+rooms[]=hall+7242
+rooms[]=camping+c01b
+rooms[]=offtopic+e56f
+rooms[]=AISFW+fc30
+
+[oxen]
+name=Official Communities
+rating=safe
+sogs[]=a03c383cf63c3c4efe67acc52112a6dd734b3a946b9545f488aaa93da7991238
+
+[cryptocurrency]
+name=Cryptocurrency
+rooms[]=bitcoinaustralia+4bec
+rooms[]=moneroaustralia+4bec
+rooms[]=crypto+a03c
+
+[privsec]
+name=Privacy & Security
+rating=safe
+rooms[]=im+118d
+rooms[]=privacy+118d
+rooms[]=security+118d
+rooms[]=degoogle+48e9
+rooms[]=privacyaustralia+4bec
+
+[casual]
+name=Casual Communities
+rating=safe
+rooms[]=general-chat+8c12
+rooms[]=midnight-madness+9be4
+
+[nsfw]
+name=18+ Communities
+rating=nsfw
+rooms[]=womanbodybeauty+13f6
+rooms[]=piao+2cd5
+rooms[]=AINSFW+fc30
\ No newline at end of file
diff --git a/php/fetch-servers.php b/php/fetch-servers.php
index fcd4c33..e36e265 100644
--- a/php/fetch-servers.php
+++ b/php/fetch-servers.php
@@ -2,6 +2,7 @@
 	// requires php-curl
 
 	require_once 'getenv.php';
+	require_once 'utils/getopt.php';
 	require_once 'utils/utils.php';
 	require_once 'servers/known-servers.php';
 	require_once 'utils/servers-rooms.php';
diff --git a/php/generate-html.php b/php/generate-html.php
index 9034ccc..6cd874c 100644
--- a/php/generate-html.php
+++ b/php/generate-html.php
@@ -2,6 +2,7 @@
 	// Perform static site generation.
 
 	require_once "getenv.php";
+	require_once "utils/getopt.php";
 
 	// https://stackoverflow.com/a/17161106
 	function rglob($pattern, $flags = 0) {
diff --git a/php/generate-listings.php b/php/generate-listings.php
new file mode 100644
index 0000000..1e962d6
--- /dev/null
+++ b/php/generate-listings.php
@@ -0,0 +1,116 @@
+<?php
+    require_once "getenv.php";
+    require_once "$PROJECT_ROOT/php/utils/servers-rooms.php";
+    require_once "$PROJECT_ROOT/php/utils/logging.php";
+
+    class CommunityListing implements JsonSerializable {
+        public readonly string $name;
+        public readonly string $rating;
+        public readonly array $rooms;
+
+        /**
+         * @param \CommunityRoom[] $rooms
+         */
+        public function __construct(string $name, ?string $rating, array $rooms) {
+            $this->name = $name;
+            $this->rating = $rating ?? "unknown";
+            $this->rooms = $rooms;
+        }
+
+        public function jsonSerialize(): mixed {
+            // TODO: Careful serialization
+            $details = get_object_vars($this);
+            $details['rooms'] = array_map(function(\CommunityRoom $room){
+                return $room->to_listing_data();
+            }, $this->rooms);
+            return $details;
+        }
+
+        public function to_summary(): array {
+            return array(
+                'name' => $this->name,
+                'rating' => $this->rating,
+                'rooms' => count($this->rooms)
+            );
+        }
+    }
+
+    /**
+     * @return \CommunityListing[]
+     */
+    function resolve_listings_config(): array {
+        global $LISTINGS_INI, $ROOMS_FILE; 
+        $listings_raw = parse_ini_file($LISTINGS_INI, process_sections: true);
+        $servers_raw = file_get_contents($ROOMS_FILE);
+        $server_data = json_decode($servers_raw, true);
+        $servers = CommunityServer::from_details_array($server_data);
+        $rooms_by_id = [];
+        foreach (CommunityServer::enumerate_rooms($servers) as $room) {
+            $rooms_by_id[$room->get_room_identifier()] = $room;
+        }
+        $sogs_by_pubkey = [];
+        foreach ($servers as $server) {
+            $sogs_by_pubkey[$server->get_pubkey()] = $server;
+        }
+        $listings = [];
+        foreach ($listings_raw as $id => $listing_props) {
+            $rooms = [];
+            if (isset($listing_props['rooms'])) {
+                foreach ($listing_props['rooms'] as $room_id) {
+                    if (isset($rooms_by_id[$room_id])) {
+                        $rooms[] = $rooms_by_id[$room_id];
+                    } else {
+                        log_warning("Could not find room $room_id from listing $id.");
+                    }
+                }
+            }
+            if (isset($listing_props['sogs'])) {
+                foreach ($listing_props['sogs'] as $public_key) {
+                    if (isset($sogs_by_pubkey[$public_key])) {
+                        /** @var \CommunityServer $sogs */
+                        $sogs = $sogs_by_pubkey[$public_key];
+                        array_push($rooms, ...$sogs->rooms);
+                    } else {
+                        log_warning("Could not find sogs $public_key from listing $id.");
+                    }
+                }
+            }
+            $listings[$id] = new CommunityListing(
+                $listing_props['name'],
+                $listing_props['rating'],
+                $rooms
+            );
+        }
+
+        return $listings;
+    }
+
+    function generate_listings() {
+        global $LISTING_PROVIDER_LISTING_SUMMARY, $LISTING_PROVIDER_LISTINGS;
+        log_info("Generating listings...");
+
+        $listings_resolved = resolve_listings_config();
+        log_value($listings_resolved);
+        $summaries = array_map(function(\CommunityListing $listing) {
+            return $listing->to_summary();
+        }, $listings_resolved);
+        file_put_contents($LISTING_PROVIDER_LISTING_SUMMARY, json_encode($summaries));
+        foreach ($listings_resolved as $id => $listing) {
+            file_put_contents(
+                "$LISTING_PROVIDER_LISTINGS/$id",
+                json_encode($listing)
+            );
+        }
+        $listings_count = count($listings_resolved);
+        log_info("Generated $listings_count listings.");
+    }
+
+    file_exists($LISTING_PROVIDER_LISTINGS) or mkdir($LISTING_PROVIDER_LISTINGS, 0755, true);
+
+    $options = getopt("v", ["verbose"]);
+    if (isset($options["v"]) or isset($options["verbose"])) {
+        $LOGGING_VERBOSITY = LoggingVerbosity::Debug;
+    }
+
+    generate_listings();
+?>
\ No newline at end of file
diff --git a/php/update-listing.php b/php/update-listing.php
index 9cf40cd..7db661b 100644
--- a/php/update-listing.php
+++ b/php/update-listing.php
@@ -1,4 +1,5 @@
 <?php
 	require_once 'fetch-servers.php';
 	require_once 'generate-html.php';
+	require_once 'generate-listings.php';
 ?>
\ No newline at end of file
diff --git a/php/utils/getopt.php b/php/utils/getopt.php
new file mode 100644
index 0000000..bb6bd95
--- /dev/null
+++ b/php/utils/getopt.php
@@ -0,0 +1,17 @@
+<?php
+    include_once "$PROJECT_ROOT/php/utils/logging.php";
+
+	// Read the -v|--verbose option increasing logging verbosity to debug.
+	$options = getopt("vn", ["verbose", "fast", "no-color", "dry-run"]);
+	if (isset($options["v"]) or isset($options["verbose"])) {
+		$LOGGING_VERBOSITY = LoggingVerbosity::Debug;
+	}
+
+	$FAST_FETCH_MODE = (isset($options["fast"]));
+
+	$DO_DRY_RUN = (isset($options["n"]) || isset($options["dry-run"]));
+
+	if (isset($options["no-color"])) {
+		LoggingVerbosity::$showColor = false;
+	}
+?>
\ No newline at end of file
diff --git a/php/utils/servers-rooms.php b/php/utils/servers-rooms.php
index 108ed2f..3294457 100644
--- a/php/utils/servers-rooms.php
+++ b/php/utils/servers-rooms.php
@@ -116,6 +116,25 @@
 			return $details;
 		}
 
+		/**
+		 * Return information for JSON serialization in listing.
+		 */
+		function to_listing_data(): array {
+			$details = get_object_vars($this);
+			unset($details['server']);
+			$details['join_url'] = $this->get_join_url();
+			unset($details['tags']);
+			unset($details['language_flag']);
+			return array(
+				"api" => $details,
+				"extras" => array(
+					"join_url" => $this->get_join_url(),
+					"language_flag" => $this->language_flag,
+					"tags" => $this->get_raw_tags()
+				)
+			);
+		}
+
 		/**
 		 * Create a CommunityRoom instance from loaded data.
 		 * @param CommunityServer $server
@@ -307,6 +326,15 @@
 			return count($this->get_staff()) < $minimal_staff_count;
 		}
 
+		/**
+		 * @return string[]
+		 */
+		function get_raw_tags(): array {
+			return array_map(function(\CommunityTag $tag) {
+				return $tag->text;
+			}, $this->tags);
+		}
+
 		/**
 		 * Return the tags associated with this room.
 		 * @return \CommunityTag[] Tags as string array.