feat(ui): filter tags by name and description on the Tag Management page

ui/litellm-dashboard/src/app/(dashboard)/tag-management/_components/TagTable.test.tsx

@@ -150,4 +150,77 @@ describe("TagTable", () => {
     expect(mockOnEdit).not.toHaveBeenCalled();
     expect(mockOnDelete).not.toHaveBeenCalled();
   });
+
+  describe("filters", () => {
+    const prodTag: Tag = { ...mockTag, name: "Prod-Billing", description: "Handles Invoices" };
+    const devTag: Tag = { ...mockTag, name: "dev-billing", description: "Sandbox usage" };
+    const prodOnlyTag: Tag = { ...mockTag, name: "prod-search", description: "Search traffic" };
+    const data = [prodTag, devTag, prodOnlyTag];
+
+    it("should narrow rows by tag name containing the text, ignoring case", async () => {
+      const user = userEvent.setup();
+      render(<TagTable {...defaultProps} data={data} />);
+      await user.type(screen.getByRole("textbox", { name: "Filter by tag name" }), "PROD");
+      expect(screen.getByText("Prod-Billing")).toBeInTheDocument();
+      expect(screen.getByText("prod-search")).toBeInTheDocument();
+      expect(screen.queryByText("dev-billing")).not.toBeInTheDocument();
+    });
+
+    it("should match the name anywhere in the string, not only as a prefix", async () => {
+      const user = userEvent.setup();
+      render(<TagTable {...defaultProps} data={data} />);
+      await user.type(screen.getByRole("textbox", { name: "Filter by tag name" }), "billing");
+      expect(screen.getByText("Prod-Billing")).toBeInTheDocument();
+      expect(screen.getByText("dev-billing")).toBeInTheDocument();
+      expect(screen.queryByText("prod-search")).not.toBeInTheDocument();
+    });
+
+    it("should narrow rows by description containing the text", async () => {
+      const user = userEvent.setup();
+      render(<TagTable {...defaultProps} data={data} />);
+      await user.type(screen.getByRole("textbox", { name: "Filter by description" }), "invoice");
+      expect(screen.getByText("Prod-Billing")).toBeInTheDocument();
+      expect(screen.queryByText("dev-billing")).not.toBeInTheDocument();
+      expect(screen.queryByText("prod-search")).not.toBeInTheDocument();
+    });
+
+    it("should require both filters to match when both are set", async () => {
+      const user = userEvent.setup();
+      render(<TagTable {...defaultProps} data={data} />);
+      await user.type(screen.getByRole("textbox", { name: "Filter by tag name" }), "billing");
+      await user.type(screen.getByRole("textbox", { name: "Filter by description" }), "sandbox");
+      expect(screen.getByText("dev-billing")).toBeInTheDocument();
+      expect(screen.queryByText("Prod-Billing")).not.toBeInTheDocument();
+      expect(screen.queryByText("prod-search")).not.toBeInTheDocument();
+    });
+
+    it("should restore every row when the filters are cleared", async () => {
+      const user = userEvent.setup();
+      render(<TagTable {...defaultProps} data={data} />);
+      const nameFilter = screen.getByRole("textbox", { name: "Filter by tag name" });
+      await user.type(nameFilter, "dev");
+      expect(screen.queryByText("Prod-Billing")).not.toBeInTheDocument();
+      await user.clear(nameFilter);
+      expect(screen.getByText("Prod-Billing")).toBeInTheDocument();
+      expect(screen.getByText("dev-billing")).toBeInTheDocument();
+      expect(screen.getByText("prod-search")).toBeInTheDocument();
+    });
+
+    it("should show a no-matching message rather than the empty state when nothing matches", async () => {
+      const user = userEvent.setup();
+      render(<TagTable {...defaultProps} data={data} />);
+      await user.type(screen.getByRole("textbox", { name: "Filter by tag name" }), "zzz");
+      expect(screen.getByText("No matching tags")).toBeInTheDocument();
+      expect(screen.queryByText("No tags yet")).not.toBeInTheDocument();
+    });
+
+    it("should not fail on tags without a description", async () => {
+      const user = userEvent.setup();
+      const noDescription: Tag = { ...mockTag, name: "bare", description: undefined };
+      render(<TagTable {...defaultProps} data={[noDescription, prodTag]} />);
+      await user.type(screen.getByRole("textbox", { name: "Filter by description" }), "invoice");
+      expect(screen.getByText("Prod-Billing")).toBeInTheDocument();
+      expect(screen.queryByText("bare")).not.toBeInTheDocument();
+    });
+  });
 });

ui/litellm-dashboard/src/app/(dashboard)/tag-management/_components/TagTable.tsx

@@ -1,11 +1,12 @@
 "use client";
 
-import { SortingState } from "@tanstack/react-table";
-import { Inbox } from "lucide-react";
+import { SortingState, Table } from "@tanstack/react-table";
+import { Inbox, SearchX } from "lucide-react";
 import React, { useMemo, useState } from "react";
 
 import { DataTable } from "@/components/shared/DataTable";
 import { Tag } from "@/components/tag_management/types";
+import { Input } from "@/components/ui/input";
 
 import { getTagTableColumns } from "./tagTableColumns";
 
@@ -31,6 +32,39 @@ function EmptyState() {
   );
 }
 
+function NoMatchingTags() {
+  return (
+    <div className="flex flex-col items-center gap-1 py-6">
+      <div className="mb-1 flex size-10 items-center justify-center rounded-lg bg-muted">
+        <SearchX className="size-5 text-muted-foreground" />
+      </div>
+      <div className="text-sm font-medium text-foreground">No matching tags</div>
+      <div className="text-sm text-muted-foreground">Try a different tag name or description.</div>
+    </div>
+  );
+}
+
+function TagFilters({ table }: { table: Table<Tag> }) {
+  return (
+    <div className="flex flex-wrap items-center gap-2">
+      <Input
+        aria-label="Filter by tag name"
+        placeholder="Filter by tag name…"
+        className="h-8 w-56"
+        value={(table.getColumn("name")?.getFilterValue() as string | undefined) ?? ""}
+        onChange={(event) => table.getColumn("name")?.setFilterValue(event.target.value)}
+      />
+      <Input
+        aria-label="Filter by description"
+        placeholder="Filter by description…"
+        className="h-8 w-56"
+        value={(table.getColumn("description")?.getFilterValue() as string | undefined) ?? ""}
+        onChange={(event) => table.getColumn("description")?.setFilterValue(event.target.value)}
+      />
+    </div>
+  );
+}
+
 const TagTable: React.FC<TagTableProps> = ({ data, onEdit, onDelete, onSelectTag, isLoading = false }) => {
   const [sorting, setSorting] = useState<SortingState>(DEFAULT_SORTING);
 
@@ -48,7 +82,9 @@ const TagTable: React.FC<TagTableProps> = ({ data, onEdit, onDelete, onSelectTag
       onSortingChange={setSorting}
       isLoading={isLoading}
       loadingMessage="Loading tags…"
-      noDataMessage={<EmptyState />}
+      filterMode="client"
+      toolbar={(table) => <TagFilters table={table} />}
+      noDataMessage={data.length === 0 ? <EmptyState /> : <NoMatchingTags />}
       size="compact"
     />
   );

ui/litellm-dashboard/src/app/(dashboard)/tag-management/_components/tagTableColumns.tsx

@@ -119,6 +119,7 @@ export const getTagTableColumns = ({ onSelectTag, onEdit, onDelete }: TagTableCo
     header: ({ column }) => <DataTableSortHeader column={column} title="Tag Name" />,
     size: 260,
     enableSorting: true,
+    filterFn: "includesString",
     cell: ({ row }) => <TagNameCell tag={row.original} onSelectTag={onSelectTag} />,
   },
   {
@@ -128,6 +129,7 @@ export const getTagTableColumns = ({ onSelectTag, onEdit, onDelete }: TagTableCo
     header: "Description",
     size: 300,
     enableSorting: false,
+    filterFn: "includesString",
     cell: ({ row }) => {
       const description = row.original.description;
       return (