diff --git a/src/main/ai/InferenceProvider.ts b/src/main/ai/InferenceProvider.ts
index 2ef7773..f3aa2ef 100644
--- a/src/main/ai/InferenceProvider.ts
+++ b/src/main/ai/InferenceProvider.ts
@@ -5,6 +5,7 @@ export interface GenerateInput {
   text: string;
   todayKst: string; // ISO YYYY-MM-DD in KST
   dueDateCandidates: ParseResult[];
+  vocab?: string[]; // v0.2.3 #3 — top-N kebab-case 태그. 미전달 시 빈 배열로 처리.
 }
 
 export interface HealthResult { ok: boolean; model?: string; reason?: string; }
diff --git a/src/main/ai/LocalOllamaProvider.ts b/src/main/ai/LocalOllamaProvider.ts
index 36239c3..d326ad8 100644
--- a/src/main/ai/LocalOllamaProvider.ts
+++ b/src/main/ai/LocalOllamaProvider.ts
@@ -37,7 +37,7 @@ export class LocalOllamaProvider implements InferenceProvider {
         headers: { 'content-type': 'application/json' },
         body: JSON.stringify({
           model: this.model,
-          prompt: buildPrompt(input.text, input.todayKst, input.dueDateCandidates),
+          prompt: buildPrompt(input.text, input.todayKst, input.dueDateCandidates, input.vocab ?? []),
           format: 'json',
           stream: false,
           options: { temperature: this.temperature, num_predict: this.numPredict }
diff --git a/tests/unit/LocalOllamaProvider.test.ts b/tests/unit/LocalOllamaProvider.test.ts
index 2d1155e..a9d60fb 100644
--- a/tests/unit/LocalOllamaProvider.test.ts
+++ b/tests/unit/LocalOllamaProvider.test.ts
@@ -26,6 +26,25 @@ describe('LocalOllamaProvider', () => {
     expect(r.title).toBe('회의');
   });
 
+  it('generate passes vocab into prompt body', async () => {
+    let capturedBody: string = '';
+    mock.get('http://localhost:11434').intercept({
+      path: '/api/generate', method: 'POST'
+    }).reply((opts) => {
+      capturedBody = opts.body as string;
+      return { statusCode: 200, data: JSON.stringify({
+        response: JSON.stringify({ title: '회의', summary: 'a\nb\nc', tags: ['design'] })
+      }) };
+    });
+    await new LocalOllamaProvider().generate({
+      text: 'x', todayKst: '2026-05-02', dueDateCandidates: [],
+      vocab: ['design', 'meeting']
+    });
+    const parsed = JSON.parse(capturedBody) as { prompt: string };
+    expect(parsed.prompt).toContain('design, meeting');
+    expect(parsed.prompt).toContain('Prefer reusing');
+  });
+
   it('generate throws on non-JSON', async () => {
     mock.get('http://localhost:11434').intercept({ path: '/api/generate', method: 'POST' }).reply(200, {
       response: 'not json'