diff --git a/src/app/api/badges/leaderboard/route.ts b/src/app/api/badges/leaderboard/route.ts
new file mode 100644
index 00000000..ab7c470d
--- /dev/null
+++ b/src/app/api/badges/leaderboard/route.ts
@@ -0,0 +1,334 @@
+import { apiJson } from "@/lib/api";
+import { bearerUserId } from "@/lib/api-auth";
+import { auth } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+
+export const dynamic = "force-dynamic";
+
+type BadgeRarityKey = "common" | "rare" | "epic" | "legendary" | "mythical" | "unique";
+
+interface BadgeLeaderboardEntry {
+  userId: number;
+  username: string;
+  figure: string;
+  score: number;
+  rank: number;
+}
+
+interface BadgeLeaderboardBoard {
+  entries: BadgeLeaderboardEntry[];
+  totalPlayers: number;
+  viewerEntry?: Partial<BadgeLeaderboardEntry>;
+}
+
+interface BadgeLeaderboardStat {
+  badgeCode: string;
+  ownerCount: number;
+  rarity: BadgeRarityKey;
+}
+
+const THRESHOLDS = {
+  commonMinOwners: 500,
+  rareMinOwners: 100,
+  epicMinOwners: 20,
+  legendaryMinOwners: 5,
+  mythicalMinOwners: 2,
+  uniqueOwners: 1,
+};
+
+function assignRarity(ownerCount: number): BadgeRarityKey {
+  if (ownerCount >= THRESHOLDS.commonMinOwners) return "common";
+  if (ownerCount >= THRESHOLDS.rareMinOwners) return "rare";
+  if (ownerCount >= THRESHOLDS.epicMinOwners) return "epic";
+  if (ownerCount >= THRESHOLDS.legendaryMinOwners) return "legendary";
+  if (ownerCount >= THRESHOLDS.mythicalMinOwners) return "mythical";
+  return "unique";
+}
+
+function rankEntries(entries: BadgeLeaderboardEntry[]): BadgeLeaderboardEntry[] {
+  return entries
+    .sort((a, b) => b.score - a.score)
+    .map((e, i) => ({ ...e, rank: i + 1 }));
+}
+
+async function loadTotalBadgesBoard(userId: number | null): Promise<BadgeLeaderboardBoard> {
+  const rows = await prisma.$queryRawUnsafe<Array<{ userId: number; username: string; look: string; cnt: bigint }>>(
+    `SELECT ub.user_id AS userId, u.username, u.look, COUNT(*) AS cnt
+     FROM users_badges ub
+     JOIN users u ON u.id = ub.user_id
+     GROUP BY ub.user_id
+     ORDER BY cnt DESC
+     LIMIT 20`
+  );
+
+  const entries = rankEntries(
+    rows.map((r) => ({
+      userId: Number(r.userId),
+      username: r.username,
+      figure: r.look,
+      score: Number(r.cnt),
+      rank: 0,
+    }))
+  );
+
+  const totalPlayers = entries.length > 0
+    ? Number(
+        (
+          await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+            `SELECT COUNT(DISTINCT user_id) AS cnt FROM users_badges`
+          )
+        )[0]?.cnt ?? 0
+      )
+    : 0;
+
+  let viewerEntry: Partial<BadgeLeaderboardEntry> | undefined;
+  if (userId) {
+    const viewerRow = await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+      `SELECT COUNT(*) AS cnt FROM users_badges WHERE user_id = ?`,
+      userId
+    );
+    const viewerScore = Number(viewerRow[0]?.cnt ?? 0);
+    if (viewerScore > 0) {
+      const viewerRank = entries.length > 0
+        ? Number(
+            (
+              await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+                `SELECT COUNT(*) + 1 AS cnt
+                 FROM (SELECT user_id, COUNT(*) AS total FROM users_badges GROUP BY user_id) t
+                 WHERE t.total > ?`,
+                viewerScore
+              )
+            )[0]?.cnt ?? entries.length + 1
+          )
+        : 1;
+      const viewerUser = await prisma.user.findUnique({
+        where: { id: userId },
+        select: { username: true, look: true },
+      });
+      if (viewerUser) {
+        viewerEntry = {
+          userId,
+          username: viewerUser.username,
+          figure: viewerUser.look,
+          score: viewerScore,
+          rank: viewerRank,
+        };
+      }
+    }
+  }
+
+  return { entries, totalPlayers, viewerEntry };
+}
+
+async function loadAchievementBoard(userId: number | null): Promise<BadgeLeaderboardBoard> {
+  const rows = await prisma.$queryRawUnsafe<Array<{ userId: number; username: string; look: string; score: number }>>(
+    `SELECT us.user_id AS userId, u.username, u.look, us.achievement_score AS score
+     FROM users_settings us
+     JOIN users u ON u.id = us.user_id
+     ORDER BY us.achievement_score DESC
+     LIMIT 20`
+  );
+
+  const entries = rankEntries(
+    rows.map((r) => ({
+      userId: Number(r.userId),
+      username: r.username,
+      figure: r.look,
+      score: r.score,
+      rank: 0,
+    }))
+  );
+
+  const totalPlayers = entries.length > 0
+    ? Number(
+        (
+          await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+            `SELECT COUNT(*) AS cnt FROM users_settings WHERE achievement_score > 0`
+          )
+        )[0]?.cnt ?? 0
+      )
+    : 0;
+
+  let viewerEntry: Partial<BadgeLeaderboardEntry> | undefined;
+  if (userId) {
+    const viewerUser = await prisma.user.findUnique({
+      where: { id: userId },
+      select: { username: true, look: true },
+    });
+    if (viewerUser) {
+      const viewerSettings = await prisma.usersSettings.findUnique({
+        where: { userId },
+        select: { achievementScore: true },
+      });
+      if (viewerSettings && viewerSettings.achievementScore > 0) {
+        const viewerRank = Number(
+          (
+            await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+              `SELECT COUNT(*) + 1 AS cnt FROM users_settings WHERE achievement_score > ?`,
+              viewerSettings.achievementScore
+            )
+          )[0]?.cnt ?? entries.length + 1
+        );
+        viewerEntry = {
+          userId,
+          username: viewerUser.username,
+          figure: viewerUser.look,
+          score: viewerSettings.achievementScore,
+          rank: viewerRank,
+        };
+      }
+    }
+  }
+
+  return { entries, totalPlayers, viewerEntry };
+}
+
+async function loadRarityBoard(
+  rarity: BadgeRarityKey,
+  badgeCodes: string[],
+  userId: number | null
+): Promise<BadgeLeaderboardBoard> {
+  if (badgeCodes.length === 0) return { entries: [], totalPlayers: 0 };
+
+  const placeholders = badgeCodes.map(() => "?").join(",");
+  const rows = await prisma.$queryRawUnsafe<Array<{ userId: number; username: string; look: string; cnt: bigint }>>(
+    `SELECT ub.user_id AS userId, u.username, u.look, COUNT(*) AS cnt
+     FROM users_badges ub
+     JOIN users u ON u.id = ub.user_id
+     WHERE ub.badge_code IN (${placeholders})
+     GROUP BY ub.user_id
+     ORDER BY cnt DESC
+     LIMIT 20`,
+    ...badgeCodes
+  );
+
+  const entries = rankEntries(
+    rows.map((r) => ({
+      userId: Number(r.userId),
+      username: r.username,
+      figure: r.look,
+      score: Number(r.cnt),
+      rank: 0,
+    }))
+  );
+
+  const totalPlayers = rows.length > 0
+    ? Number(
+        (
+          await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+            `SELECT COUNT(DISTINCT user_id) AS cnt FROM users_badges WHERE badge_code IN (${placeholders})`,
+            ...badgeCodes
+          )
+        )[0]?.cnt ?? 0
+      )
+    : 0;
+
+  let viewerEntry: Partial<BadgeLeaderboardEntry> | undefined;
+  if (userId) {
+    const viewerRow = await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+      `SELECT COUNT(*) AS cnt FROM users_badges WHERE user_id = ? AND badge_code IN (${placeholders})`,
+      userId,
+      ...badgeCodes
+    );
+    const viewerScore = Number(viewerRow[0]?.cnt ?? 0);
+    if (viewerScore > 0) {
+      const viewerUser = await prisma.user.findUnique({
+        where: { id: userId },
+        select: { username: true, look: true },
+      });
+      if (viewerUser) {
+        const viewerRank = Number(
+          (
+            await prisma.$queryRawUnsafe<Array<{ cnt: bigint }>>(
+              `SELECT COUNT(*) + 1 AS cnt
+               FROM (SELECT user_id, COUNT(*) AS total FROM users_badges WHERE badge_code IN (${placeholders}) GROUP BY user_id) t
+               WHERE t.total > ?`,
+              ...badgeCodes,
+              viewerScore
+            )
+          )[0]?.cnt ?? entries.length + 1
+        );
+        viewerEntry = {
+          userId,
+          username: viewerUser.username,
+          figure: viewerUser.look,
+          score: viewerScore,
+          rank: viewerRank,
+        };
+      }
+    }
+  }
+
+  return { entries, totalPlayers, viewerEntry };
+}
+
+export async function GET(req: Request) {
+  try {
+    let userId: number | null = await bearerUserId(req);
+    if (!userId) {
+      const session = await auth();
+      userId = session?.user?.id ? Number(session.user.id) : null;
+    }
+
+    // Gather badge ownership stats
+    const badgeStatsRaw = await prisma.$queryRawUnsafe<
+      Array<{ badgeCode: string; ownerCount: bigint }>
+    >(
+      `SELECT badge_code AS badgeCode, COUNT(DISTINCT user_id) AS ownerCount
+       FROM users_badges
+       GROUP BY badge_code`
+    );
+
+    const badgeStats: BadgeLeaderboardStat[] = badgeStatsRaw.map((r) => ({
+      badgeCode: r.badgeCode,
+      ownerCount: Number(r.ownerCount),
+      rarity: assignRarity(Number(r.ownerCount)),
+    }));
+
+    // Group badge codes by rarity
+    const badgesByRarity = new Map<BadgeRarityKey, string[]>();
+    for (const stat of badgeStats) {
+      const list = badgesByRarity.get(stat.rarity) ?? [];
+      list.push(stat.badgeCode);
+      badgesByRarity.set(stat.rarity, list);
+    }
+
+    const rarityKeys: BadgeRarityKey[] = ["common", "rare", "epic", "legendary", "mythical", "unique"];
+
+    const [totalBadges, achievementLevel, ...rarityBoards] = await Promise.all([
+      loadTotalBadgesBoard(userId),
+      loadAchievementBoard(userId),
+      ...rarityKeys.map((rk) => loadRarityBoard(rk, badgesByRarity.get(rk) ?? [], userId)),
+    ]);
+
+    const rarity = Object.fromEntries(
+      rarityKeys.map((rk, i) => [rk, rarityBoards[i]])
+    ) as Record<BadgeRarityKey, BadgeLeaderboardBoard>;
+
+    return apiJson({
+      viewerUserId: userId ?? 0,
+      badgeStats,
+      thresholds: THRESHOLDS,
+      leaderboards: { totalBadges, achievementLevel, rarity },
+    });
+  } catch (err) {
+    console.error("Badge leaderboard error:", err);
+    return apiJson({
+      viewerUserId: 0,
+      badgeStats: [],
+      thresholds: THRESHOLDS,
+      leaderboards: {
+        totalBadges: { entries: [], totalPlayers: 0 },
+        achievementLevel: { entries: [], totalPlayers: 0 },
+        rarity: {
+          common: { entries: [], totalPlayers: 0 },
+          rare: { entries: [], totalPlayers: 0 },
+          epic: { entries: [], totalPlayers: 0 },
+          legendary: { entries: [], totalPlayers: 0 },
+          mythical: { entries: [], totalPlayers: 0 },
+          unique: { entries: [], totalPlayers: 0 },
+        },
+      },
+    });
+  }
+}