diff --git a/.changeset/swift-moles-fetch.md b/.changeset/swift-moles-fetch.md
new file mode 100644
index 0000000000000..4ef5c69c78a4a
--- /dev/null
+++ b/.changeset/swift-moles-fetch.md
@@ -0,0 +1,11 @@
+---
+"@refinedev/supabase": patch
+---
+
+fix(supabase): handle realtime subscriptions with multiple filters #6360
+
+Supabase Realtime `postgres_changes` subscriptions support a single `filter` string.
+When multiple filters are provided, `liveProvider` now uses only the first valid filter
+and logs a warning instead of generating an invalid subscription payload.
+
+Resolves #6360
diff --git a/packages/supabase/src/liveProvider/index.ts b/packages/supabase/src/liveProvider/index.ts
index 19200da1de4c4..ccdc4d8686218 100644
--- a/packages/supabase/src/liveProvider/index.ts
+++ b/packages/supabase/src/liveProvider/index.ts
@@ -50,11 +50,11 @@ export const liveProvider = (
       };
 
       const mapFilter = (filters?: CrudFilters): string | undefined => {
-        if (!filters || filters?.length === 0) {
+        if (!filters || filters.length === 0) {
           return;
         }
 
-        return filters
+        const mapped = filters
           .map((filter: CrudFilter): string | undefined => {
             if ("field" in filter) {
               return `${filter.field}=${mapOperator(filter.operator)}.${
@@ -63,17 +63,32 @@ export const liveProvider = (
             }
             return;
           })
-          .filter(Boolean)
-          .join(",");
+          .filter((x): x is string => Boolean(x));
+
+        if (mapped.length === 0) return;
+
+        if (mapped.length > 1) {
+          // Supabase Realtime currently supports only a single `filter` string
+          // for postgres_changes. Joining multiple filters with commas
+          // results in an invalid payload and may break the subscription.
+          console.warn(
+            `[refine/supabase] Multiple filters are not supported for Supabase Realtime subscriptions. Using only the first filter: "${mapped[0]}".`,
+          );
+        }
+
+        return mapped[0];
       };
 
       const events = types
         .map((x) => supabaseTypes[x])
         .sort((a, b) => a.localeCompare(b));
+
       const filter = mapFilter(params?.filters);
+
       const ch = `${channel}:${events.join("|")}${filter ? `:${filter}` : ""}`;
 
       let client = supabaseClient.channel(ch);
+
       for (let i = 0; i < events.length; i++) {
         client = client.on(
           "postgres_changes",
diff --git a/packages/supabase/test/liveProvider/index.spec.ts b/packages/supabase/test/liveProvider/index.spec.ts
new file mode 100644
index 0000000000000..453b6e119e96d
--- /dev/null
+++ b/packages/supabase/test/liveProvider/index.spec.ts
@@ -0,0 +1,96 @@
+import type { SupabaseClient } from "@supabase/supabase-js";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { liveProvider } from "../../src/liveProvider";
+
+describe("liveProvider", () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  const createMockSupabaseClient = () => {
+    const realtimeChannel = {
+      on: vi.fn().mockReturnThis(),
+      subscribe: vi.fn().mockReturnThis(),
+    };
+
+    const client = {
+      channel: vi.fn().mockReturnValue(realtimeChannel),
+      removeChannel: vi.fn(),
+      rest: { schemaName: "public" },
+    } as unknown as SupabaseClient<any, any, any>;
+
+    return { client, realtimeChannel };
+  };
+
+  it("uses only the first realtime filter and warns when multiple filters are provided", () => {
+    const warnSpy = vi
+      .spyOn(console, "warn")
+      .mockImplementation(() => undefined);
+    const { client, realtimeChannel } = createMockSupabaseClient();
+    const provider = liveProvider(client);
+
+    provider.subscribe({
+      channel: "resources/posts",
+      types: ["created", "updated"],
+      callback: vi.fn(),
+      params: {
+        filters: [
+          { field: "id", operator: "eq", value: 1 },
+          { field: "status", operator: "eq", value: "published" },
+        ],
+      },
+    });
+
+    expect(client.channel).toHaveBeenCalledWith(
+      "resources/posts:INSERT|UPDATE:id=eq.1",
+    );
+    expect(realtimeChannel.on).toHaveBeenCalledTimes(2);
+    expect(realtimeChannel.on).toHaveBeenCalledWith(
+      "postgres_changes",
+      expect.objectContaining({
+        event: "INSERT",
+        filter: "id=eq.1",
+        schema: "public",
+        table: "posts",
+      }),
+      expect.any(Function),
+    );
+    expect(realtimeChannel.on).toHaveBeenCalledWith(
+      "postgres_changes",
+      expect.objectContaining({
+        event: "UPDATE",
+        filter: "id=eq.1",
+        schema: "public",
+        table: "posts",
+      }),
+      expect.any(Function),
+    );
+    expect(realtimeChannel.subscribe).toHaveBeenCalledTimes(1);
+    expect(warnSpy).toHaveBeenCalledTimes(1);
+    expect(warnSpy).toHaveBeenCalledWith(
+      expect.stringContaining(`Using only the first filter: "id=eq.1".`),
+    );
+  });
+
+  it("does not warn when a single realtime filter is provided", () => {
+    const warnSpy = vi
+      .spyOn(console, "warn")
+      .mockImplementation(() => undefined);
+    const { client } = createMockSupabaseClient();
+    const provider = liveProvider(client);
+
+    provider.subscribe({
+      channel: "resources/posts",
+      types: ["updated"],
+      callback: vi.fn(),
+      params: {
+        filters: [{ field: "status", operator: "eq", value: "published" }],
+      },
+    });
+
+    expect(client.channel).toHaveBeenCalledWith(
+      "resources/posts:UPDATE:status=eq.published",
+    );
+    expect(warnSpy).not.toHaveBeenCalled();
+  });
+});