diff --git a/src/lib/soroban.service.test.ts b/src/lib/soroban.service.test.ts
index 3e72adb..8d8b547 100644
--- a/src/lib/soroban.service.test.ts
+++ b/src/lib/soroban.service.test.ts
@@ -1536,6 +1536,56 @@ describe("SorobanService leaderboard", () => {
     });
   });
 
+  it("getLeaderboard filters event-derived rows by a case-insensitive address search", async () => {
+    const otherUser = StrKey.encodeEd25519PublicKey(Buffer.alloc(32, 8));
+    const { service, rpcServer } = makeService({ pool: false });
+    vi.spyOn(service, "getFactoryPools").mockResolvedValue([
+      {
+        id: "factory-pool",
+        contractAddress: POOL_CONTRACT_ID,
+        asset: { code: "XLM", isNative: true },
+        dailyRate: "0",
+        minLockPeriod: 0,
+        totalLocked: "0",
+        totalUsers: 0,
+        isActive: true,
+        createdAt: 1,
+      },
+    ]);
+    rpcServer.getLatestLedger.mockResolvedValue({ sequence: 200_000 });
+    rpcServer.getEvents.mockResolvedValue({
+      events: [
+        makeContractEvent({
+          action: "update_credits",
+          address: USER_PUBLIC_KEY,
+          value: { credits: 120 },
+        }),
+        makeContractEvent({
+          action: "update_credits",
+          address: otherUser,
+          value: 50,
+        }),
+      ],
+    });
+
+    const needle = USER_PUBLIC_KEY.slice(4, 14).toLowerCase();
+    await expect(service.getLeaderboard(0, 10, "credits", needle)).resolves.toEqual({
+      entries: [
+        {
+          address: USER_PUBLIC_KEY,
+          totalCredits: 120,
+          totalStake: 0,
+          boostUtilization: null,
+        },
+      ],
+      total: 1,
+    });
+
+    await expect(
+      service.getLeaderboard(0, 10, "credits", "not-a-real-address"),
+    ).resolves.toEqual({ entries: [], total: 0 });
+  });
+
   it("fetchLeaderboardFromEvents returns an empty page without pool IDs and on RPC errors", async () => {
     const warnSpy = vi
       .spyOn(console, "warn")
@@ -1629,6 +1679,33 @@ describe("SorobanService leaderboard", () => {
     );
   });
 
+  it("getLeaderboard forwards a search term as a query param to the API", async () => {
+    const previousApi = process.env.NEXT_PUBLIC_LEADERBOARD_API_URL;
+    process.env.NEXT_PUBLIC_LEADERBOARD_API_URL =
+      "https://leaderboard.example/rankings";
+    vi.resetModules();
+    const { SorobanService: ApiSorobanService } = await import("./soroban");
+    const service = new ApiSorobanService();
+    const fetchSpy = vi.spyOn(globalThis, "fetch").mockResolvedValue({
+      ok: true,
+      json: async () => ({ entries: [], total: 0 }),
+    } as Response);
+
+    try {
+      await service.getLeaderboard(0, 10, "credits", "GABC123");
+    } finally {
+      if (previousApi === undefined)
+        delete process.env.NEXT_PUBLIC_LEADERBOARD_API_URL;
+      else process.env.NEXT_PUBLIC_LEADERBOARD_API_URL = previousApi;
+      vi.resetModules();
+    }
+
+    expect(fetchSpy).toHaveBeenCalledWith(
+      "https://leaderboard.example/rankings?offset=0&limit=10&sort=credits&search=GABC123",
+      { headers: { accept: "application/json" } },
+    );
+  });
+
   it("getLeaderboard falls back to event scanning when the API responds non-OK", async () => {
     const previousApi = process.env.NEXT_PUBLIC_LEADERBOARD_API_URL;
     process.env.NEXT_PUBLIC_LEADERBOARD_API_URL =
diff --git a/src/lib/soroban.ts b/src/lib/soroban.ts
index 0b75857..f20cd22 100644
--- a/src/lib/soroban.ts
+++ b/src/lib/soroban.ts
@@ -4,6 +4,7 @@
  */
 
 import {
+  Account,
   Contract,
   TransactionBuilder,
   BASE_FEE,
@@ -1484,7 +1485,7 @@ export class SorobanService {
   async getPoolHistory(
     poolId: string,
     days: number = 7,
-  ): Promise<{ date: string; tvl: string; truncated?: boolean }> {
+  ): Promise<{ date: string; tvl: string; truncated?: boolean }[]> {
     try {
       const latest = await this.rpcServer.getLatestLedger();
       // ~5 s per ledger; days * 86400 / 5
@@ -1627,26 +1628,29 @@ export class SorobanService {
     offset: number,
     limit: number,
     sortKey: LeaderboardSortKey = 'credits',
+    search?: string,
   ): Promise<LeaderboardPage> {
     if (LEADERBOARD_API_URL) {
       try {
-        return await this.fetchLeaderboardFromApi(offset, limit, sortKey);
+        return await this.fetchLeaderboardFromApi(offset, limit, sortKey, search);
       } catch (err) {
         console.warn('[SmartDrop] leaderboard API failed, falling back to event scan:', err);
       }
     }
-    return this.fetchLeaderboardFromEvents(offset, limit, sortKey);
+    return this.fetchLeaderboardFromEvents(offset, limit, sortKey, search);
   }
 
   private async fetchLeaderboardFromApi(
     offset: number,
     limit: number,
     sortKey: LeaderboardSortKey,
+    search?: string,
   ): Promise<LeaderboardPage> {
     const url = new URL(LEADERBOARD_API_URL);
     url.searchParams.set('offset', String(offset));
     url.searchParams.set('limit', String(limit));
     url.searchParams.set('sort', sortKey);
+    if (search) url.searchParams.set('search', search);
 
     const res = await fetch(url.toString(), { headers: { accept: 'application/json' } });
     if (!res.ok) throw new Error(`Leaderboard API responded ${res.status}`);
@@ -1668,6 +1672,7 @@ export class SorobanService {
     offset: number,
     limit: number,
     sortKey: LeaderboardSortKey,
+    search?: string,
   ): Promise<LeaderboardPage> {
     const poolIds = await this.getLeaderboardPoolIds();
     if (poolIds.length === 0) return { entries: [], total: 0 };
@@ -1735,7 +1740,8 @@ export class SorobanService {
           totalStake: Math.round(stake),
           boostUtilization: null,
         }))
-        .filter((e) => e.totalStake > 0 || e.totalCredits > 0);
+        .filter((e) => e.totalStake > 0 || e.totalCredits > 0)
+        .filter((e) => !search || e.address.toLowerCase().includes(search.toLowerCase()));
 
       all.sort((a, b) =>
         sortKey === 'credits'