diff --git a/src/features/retrospectives/hooks/index.ts b/src/features/retrospectives/hooks/index.ts
new file mode 100644
index 0000000..ceb6492
--- /dev/null
+++ b/src/features/retrospectives/hooks/index.ts
@@ -0,0 +1,5 @@
+export * from './retrospectiveQueryKeys'
+export * from './useCreateSttJob'
+export * from './usePublishSummary'
+export * from './useSummary'
+export * from './useUpdateSummary'
diff --git a/src/features/retrospectives/hooks/retrospectiveQueryKeys.ts b/src/features/retrospectives/hooks/retrospectiveQueryKeys.ts
new file mode 100644
index 0000000..de28939
--- /dev/null
+++ b/src/features/retrospectives/hooks/retrospectiveQueryKeys.ts
@@ -0,0 +1,6 @@
+export const retrospectiveQueryKeys = {
+  all: ['retrospectives'] as const,
+
+  summaries: () => [...retrospectiveQueryKeys.all, 'summary'] as const,
+  summary: (meetingId: number) => [...retrospectiveQueryKeys.summaries(), meetingId] as const,
+}
diff --git a/src/features/retrospectives/hooks/useCreateSttJob.ts b/src/features/retrospectives/hooks/useCreateSttJob.ts
new file mode 100644
index 0000000..f87ada9
--- /dev/null
+++ b/src/features/retrospectives/hooks/useCreateSttJob.ts
@@ -0,0 +1,50 @@
+import { useMutation } from '@tanstack/react-query'
+import { useCallback, useEffect, useRef } from 'react'
+
+import type { ApiError } from '@/api'
+
+import { createSttJob } from '../retrospectives.api'
+import type { CreateSttJobParams, SttJobResponse } from '../retrospectives.types'
+
+/**
+ * STT Job 생성 (AI 요약 트리거) mutation 훅
+ *
+ * - 동기 API이므로 mutation pending 동안 로딩 오버레이 표시
+ * - cancel() 호출 시 진행 중인 HTTP 요청 중단
+ * - 컴포넌트 언마운트 시 자동 취소
+ */
+export const useCreateSttJob = () => {
+  const abortControllerRef = useRef<AbortController | null>(null)
+
+  useEffect(() => {
+    return () => {
+      abortControllerRef.current?.abort()
+      abortControllerRef.current = null
+    }
+  }, [])
+
+  const mutation = useMutation<SttJobResponse, ApiError, CreateSttJobParams>({
+    mutationFn: (params: CreateSttJobParams) => {
+      abortControllerRef.current?.abort()
+
+      const controller = new AbortController()
+      abortControllerRef.current = controller
+
+      return createSttJob(params, controller.signal).finally(() => {
+        if (abortControllerRef.current === controller) {
+          abortControllerRef.current = null
+        }
+      })
+    },
+  })
+
+  const { reset } = mutation
+
+  const cancel = useCallback(() => {
+    abortControllerRef.current?.abort()
+    abortControllerRef.current = null
+    reset()
+  }, [reset])
+
+  return { ...mutation, cancel }
+}
diff --git a/src/features/retrospectives/hooks/usePublishSummary.ts b/src/features/retrospectives/hooks/usePublishSummary.ts
new file mode 100644
index 0000000..1636fd6
--- /dev/null
+++ b/src/features/retrospectives/hooks/usePublishSummary.ts
@@ -0,0 +1,18 @@
+import { useMutation, useQueryClient } from '@tanstack/react-query'
+
+import type { ApiError } from '@/api'
+
+import { publishSummary } from '../retrospectives.api'
+import type { PublishSummaryParams, RetrospectiveSummaryResponse } from '../retrospectives.types'
+import { retrospectiveQueryKeys } from './retrospectiveQueryKeys'
+
+export const usePublishSummary = () => {
+  const queryClient = useQueryClient()
+
+  return useMutation<RetrospectiveSummaryResponse, ApiError, PublishSummaryParams>({
+    mutationFn: (params: PublishSummaryParams) => publishSummary(params),
+    onSuccess: (data, variables) => {
+      queryClient.setQueryData(retrospectiveQueryKeys.summary(variables.meetingId), data)
+    },
+  })
+}
diff --git a/src/features/retrospectives/hooks/useSummary.ts b/src/features/retrospectives/hooks/useSummary.ts
new file mode 100644
index 0000000..1a9abfe
--- /dev/null
+++ b/src/features/retrospectives/hooks/useSummary.ts
@@ -0,0 +1,17 @@
+import { useQuery } from '@tanstack/react-query'
+
+import type { ApiError } from '@/api'
+
+import { getSummary } from '../retrospectives.api'
+import type { RetrospectiveSummaryResponse } from '../retrospectives.types'
+import { retrospectiveQueryKeys } from './retrospectiveQueryKeys'
+
+export const useSummary = (meetingId: number) => {
+  const isValid = !Number.isNaN(meetingId) && meetingId > 0
+
+  return useQuery<RetrospectiveSummaryResponse, ApiError>({
+    queryKey: retrospectiveQueryKeys.summary(meetingId),
+    queryFn: () => getSummary(meetingId),
+    enabled: isValid,
+  })
+}
diff --git a/src/features/retrospectives/hooks/useUpdateSummary.ts b/src/features/retrospectives/hooks/useUpdateSummary.ts
new file mode 100644
index 0000000..c2ecdac
--- /dev/null
+++ b/src/features/retrospectives/hooks/useUpdateSummary.ts
@@ -0,0 +1,18 @@
+import { useMutation, useQueryClient } from '@tanstack/react-query'
+
+import type { ApiError } from '@/api'
+
+import { updateSummary } from '../retrospectives.api'
+import type { RetrospectiveSummaryResponse, UpdateSummaryParams } from '../retrospectives.types'
+import { retrospectiveQueryKeys } from './retrospectiveQueryKeys'
+
+export const useUpdateSummary = () => {
+  const queryClient = useQueryClient()
+
+  return useMutation<RetrospectiveSummaryResponse, ApiError, UpdateSummaryParams>({
+    mutationFn: (params: UpdateSummaryParams) => updateSummary(params),
+    onSuccess: (data, variables) => {
+      queryClient.setQueryData(retrospectiveQueryKeys.summary(variables.meetingId), data)
+    },
+  })
+}
diff --git a/src/features/retrospectives/index.ts b/src/features/retrospectives/index.ts
index 4ffb8fb..7a3aafd 100644
--- a/src/features/retrospectives/index.ts
+++ b/src/features/retrospectives/index.ts
@@ -1,2 +1,23 @@
 // Components
 export * from './components'
+
+// Hooks
+export * from './hooks'
+
+// API
+export { createSttJob, getSummary, publishSummary, updateSummary } from './retrospectives.api'
+
+// Types
+export type {
+  CreateSttJobParams,
+  KeyPoint,
+  KeyPointUpdateRequest,
+  PublishSummaryParams,
+  RetrospectiveSummaryResponse,
+  SttJobResponse,
+  SttJobStatus,
+  SummaryTopic,
+  UpdateSummaryParams,
+  UpdateSummaryRequest,
+  UpdateSummaryTopicRequest,
+} from './retrospectives.types'
diff --git a/src/features/retrospectives/retrospectives.api.ts b/src/features/retrospectives/retrospectives.api.ts
new file mode 100644
index 0000000..1564b59
--- /dev/null
+++ b/src/features/retrospectives/retrospectives.api.ts
@@ -0,0 +1,82 @@
+/**
+ * @file retrospectives.api.ts
+ * @description 약속 회고 AI 요약 API 요청 함수
+ */
+
+import { api } from '@/api/client'
+
+import { RETROSPECTIVES_ENDPOINTS } from './retrospectives.endpoints'
+import type {
+  CreateSttJobParams,
+  PublishSummaryParams,
+  RetrospectiveSummaryResponse,
+  SttJobResponse,
+  UpdateSummaryParams,
+} from './retrospectives.types'
+
+/** STT 요청 타임아웃: 5분 (동기 API이므로 충분히 길게) */
+const STT_TIMEOUT = 5 * 60 * 1000
+
+/**
+ * STT Job 생성 (AI 요약 트리거)
+ *
+ * @description
+ * 녹음 파일을 업로드하거나 사전 의견만으로 STT + AI 요약을 실행합니다.
+ * 동기 API이므로 완료될 때까지 블로킹됩니다.
+ *
+ * @param params - 생성 파라미터
+ * @param signal - AbortSignal (취소 지원)
+ */
+export const createSttJob = async (
+  params: CreateSttJobParams,
+  signal?: AbortSignal
+): Promise<SttJobResponse> => {
+  const { gatheringId, meetingId, file } = params
+
+  const formData = new FormData()
+  if (file) {
+    formData.append('file', file)
+  }
+
+  return api.post<SttJobResponse>(
+    RETROSPECTIVES_ENDPOINTS.STT_JOBS(gatheringId, meetingId),
+    formData,
+    {
+      headers: { 'Content-Type': undefined },
+      timeout: STT_TIMEOUT,
+      signal,
+    }
+  )
+}
+
+/**
+ * 회고 요약 조회
+ *
+ * @param meetingId - 약속 식별자
+ */
+export const getSummary = async (meetingId: number): Promise<RetrospectiveSummaryResponse> => {
+  return api.get<RetrospectiveSummaryResponse>(RETROSPECTIVES_ENDPOINTS.SUMMARY(meetingId))
+}
+
+/**
+ * 회고 요약 수정
+ *
+ * @param params - 수정 파라미터 (meetingId + topics 데이터)
+ */
+export const updateSummary = async (
+  params: UpdateSummaryParams
+): Promise<RetrospectiveSummaryResponse> => {
+  const { meetingId, data } = params
+  return api.patch<RetrospectiveSummaryResponse>(RETROSPECTIVES_ENDPOINTS.SUMMARY(meetingId), data)
+}
+
+/**
+ * 회고 요약 발행 (약속 회고 생성)
+ *
+ * @param params - 발행 파라미터 (meetingId)
+ */
+export const publishSummary = async (
+  params: PublishSummaryParams
+): Promise<RetrospectiveSummaryResponse> => {
+  return api.post<RetrospectiveSummaryResponse>(RETROSPECTIVES_ENDPOINTS.PUBLISH(params.meetingId))
+}
diff --git a/src/features/retrospectives/retrospectives.endpoints.ts b/src/features/retrospectives/retrospectives.endpoints.ts
new file mode 100644
index 0000000..9567887
--- /dev/null
+++ b/src/features/retrospectives/retrospectives.endpoints.ts
@@ -0,0 +1,14 @@
+import { API_PATHS } from '@/api'
+
+export const RETROSPECTIVES_ENDPOINTS = {
+  /** STT Job 생성 (POST) */
+  STT_JOBS: (gatheringId: number, meetingId: number) =>
+    `${API_PATHS.GATHERINGS}/${gatheringId}/meetings/${meetingId}/stt/jobs`,
+
+  /** 회고 요약 조회/수정 (GET/PATCH) */
+  SUMMARY: (meetingId: number) => `${API_PATHS.MEETINGS}/${meetingId}/retrospectives/summary`,
+
+  /** 회고 요약 발행 (POST) */
+  PUBLISH: (meetingId: number) =>
+    `${API_PATHS.MEETINGS}/${meetingId}/retrospectives/summary/publish`,
+} as const
diff --git a/src/features/retrospectives/retrospectives.types.ts b/src/features/retrospectives/retrospectives.types.ts
new file mode 100644
index 0000000..b03891c
--- /dev/null
+++ b/src/features/retrospectives/retrospectives.types.ts
@@ -0,0 +1,84 @@
+/**
+ * @file retrospectives.types.ts
+ * @description 약속 회고 AI 요약 관련 타입 정의
+ */
+
+// ─── STT Job ───
+
+/** STT Job 상태 */
+export type SttJobStatus = 'PENDING' | 'PROCESSING' | 'DONE' | 'FAILED'
+
+/** STT Job 생성 요청 파라미터 */
+export type CreateSttJobParams = {
+  gatheringId: number
+  meetingId: number
+  file?: File
+}
+
+/** STT Job 응답 */
+export interface SttJobResponse {
+  jobId: number
+  meetingId: number
+  userId: number
+  status: SttJobStatus
+  summary: string | null
+  highlights: string[] | null
+  errorMessage: string | null
+  createdAt: string
+}
+
+// ─── Retrospective Summary ───
+
+/** 주요 포인트 항목 */
+export interface KeyPoint {
+  title: string
+  details: string[]
+}
+
+/** 토픽별 요약 */
+export interface SummaryTopic {
+  topicId: number
+  confirmOrder: number
+  topicTitle: string
+  topicDescription: string
+  summary: string
+  keyPoints: KeyPoint[]
+}
+
+/** 회고 요약 응답 (GET, PATCH, POST publish 공통) */
+export interface RetrospectiveSummaryResponse {
+  meetingId: number
+  isPublished: boolean
+  publishedAt: string | null
+  topics: SummaryTopic[]
+}
+
+// ─── Request Types ───
+
+/** 주요 포인트 수정 요청 (KeyPoint와 동일 형태) */
+export type KeyPointUpdateRequest = KeyPoint
+
+/** 토픽 요약 수정 요청 */
+export type UpdateSummaryTopicRequest = {
+  topicId: number
+  summary: string
+  keyPoints: KeyPointUpdateRequest[]
+}
+
+/** 회고 요약 수정 요청 바디 */
+export type UpdateSummaryRequest = {
+  topics: UpdateSummaryTopicRequest[]
+}
+
+// ─── Hook Params ───
+
+/** 요약 수정 훅 파라미터 */
+export type UpdateSummaryParams = {
+  meetingId: number
+  data: UpdateSummaryRequest
+}
+
+/** 요약 발행 훅 파라미터 */
+export type PublishSummaryParams = {
+  meetingId: number
+}