diff --git a/src/lib/searchOnlyListOmnibox.ts b/src/lib/searchOnlyListOmnibox.ts
index 23db977e..ef35f92b 100644
--- a/src/lib/searchOnlyListOmnibox.ts
+++ b/src/lib/searchOnlyListOmnibox.ts
@@ -2,7 +2,11 @@
  * Degenerate omnibox for lists that only expose free-text search (B128:
  * organizações). Pure / client-safe.
  */
-import { type CampaignListOmniboxChip } from '@/lib/campaignListOmnibox'
+import {
+  filterOmniboxSuggestionSeeds,
+  type CampaignListOmniboxChip,
+  type CampaignListOmniboxSuggestion,
+} from '@/lib/campaignListOmnibox'
 
 export type SearchOnlyListState = {
   q?: string
@@ -19,6 +23,9 @@ export const buildSearchOnlyOmniboxChips = (
   state: SearchOnlyListState,
 ): CampaignListOmniboxChip[] => (state.q ? [{ id: 'q', label: chipLabel('Busca', state.q) }] : [])
 
+export const buildSearchOnlyOmniboxSuggestions = (query: string): CampaignListOmniboxSuggestion[] =>
+  filterOmniboxSuggestionSeeds([], query)
+
 export const applySearchOnlyOmniboxSuggestion = <T extends SearchOnlyListState>({
   state,
   suggestionId,
@@ -34,3 +41,28 @@ export const applySearchOnlyOmniboxSuggestion = <T extends SearchOnlyListState>(
   }
   return { kind: 'url', state }
 }
+
+export const removeSearchOnlyOmniboxChip = <T extends SearchOnlyListState>({
+  state,
+  chipId,
+  withPageReset,
+}: {
+  state: T
+  chipId: string
+  withPageReset: (next: T) => T
+}): SearchOnlyOmniboxAction<T> => {
+  if (chipId === 'q') {
+    return { kind: 'url', state: withPageReset({ ...state, q: undefined }) }
+  }
+  return { kind: 'url', state }
+}
+
+export const clearSearchOnlyOmnibox = <T extends SearchOnlyListState>({
+  cleared,
+}: {
+  state: T
+  cleared: T
+}): SearchOnlyOmniboxAction<T> => ({
+  kind: 'clear',
+  state: cleared,
+})
diff --git a/tests/unit/listOmniboxB128.unit.spec.ts b/tests/unit/listOmniboxB128.unit.spec.ts
index 5f1f7a6f..69c4a944 100644
--- a/tests/unit/listOmniboxB128.unit.spec.ts
+++ b/tests/unit/listOmniboxB128.unit.spec.ts
@@ -3,6 +3,9 @@ import { describe, expect, it } from 'vitest'
 import {
   applySearchOnlyOmniboxSuggestion,
   buildSearchOnlyOmniboxChips,
+  buildSearchOnlyOmniboxSuggestions,
+  clearSearchOnlyOmnibox,
+  removeSearchOnlyOmniboxChip,
 } from '@/lib/searchOnlyListOmnibox'
 import {
   applyActivityOmniboxSuggestion,
@@ -309,6 +312,21 @@ describe('list omnibox adapters (B128)', () => {
       withPageReset: (next) => ({ ...next, page: 1 }),
     })
     expect(applied).toEqual({ kind: 'url', state: { page: 1, q: 'ana' } })
+
+    expect(buildSearchOnlyOmniboxSuggestions('x')[0]?.id).toBe('q:x')
+
+    const removed = removeSearchOnlyOmniboxChip({
+      state: { q: 'sindicato', page: 2 },
+      chipId: 'q',
+      withPageReset: (next) => ({ ...next, page: 1 }),
+    })
+    expect(removed).toEqual({ kind: 'url', state: { page: 1, q: undefined } })
+
+    const cleared = clearSearchOnlyOmnibox({
+      state: { q: 'sindicato' },
+      cleared: {},
+    })
+    expect(cleared).toEqual({ kind: 'clear', state: {} })
   })
 
   it('advisor toggles municipality portfolio filter and suggests by name', () => {