diff --git a/app/cli/commands/credential.py b/app/cli/commands/credential.py
new file mode 100644
index 0000000..b0ed43b
--- /dev/null
+++ b/app/cli/commands/credential.py
@@ -0,0 +1,127 @@
+"""Broker credential CLI commands."""
+
+from __future__ import annotations
+
+import json
+
+import typer
+
+from app.cli.commands.portfolio import _confirm
+from app.cli.core.utils import execute_command, render_output
+from app.core.encryption import encrypt_payload
+
+credential_app = typer.Typer(help="Broker credential management commands.")
+
+
+def _with_service(ctx: typer.Context, callback):
+    app_context = ctx.obj
+    repository = app_context.repository_factory(app_context.settings)
+    try:
+        return execute_command(app_context.console, callback=lambda: callback(repository, app_context))
+    except SystemExit:
+        raise
+    except RuntimeError as exc:
+        app_context.console.print(str(exc))
+        raise typer.Exit(code=1) from exc
+    finally:
+        if callable(getattr(type(repository), "close", None)):
+            repository.close()
+
+
+@credential_app.command("set")
+def set_credential(
+    ctx: typer.Context,
+    user: str = typer.Option(..., "--user", help="Owner username (required)."),
+    broker: str = typer.Option("kis", "--broker", help="Broker code (default: kis)."),
+    account_ref: str = typer.Option(..., "--account-ref", help="Account reference (e.g. account number)."),
+    app_key: str = typer.Option(..., "--app-key", help="Broker app_key."),
+    app_secret: str = typer.Option(..., "--app-secret", help="Broker app_secret."),
+    force: bool = typer.Option(False, "--force", help="Skip confirmation prompt."),
+) -> None:
+    """Register or update a broker credential (upsert)."""
+    _confirm(force, f"Set {broker} credential for user '{user}'?")
+
+    def _callback(repository, app_context):
+        owner = repository.get_user_by_username(user)
+        if owner is None:
+            raise ValueError(f"사용자를 찾을 수 없습니다: {user}")
+        enc_key = app_context.settings.require_credential_encryption_key()
+        payload = json.dumps({"app_key": app_key, "app_secret": app_secret})
+        encrypted = encrypt_payload(enc_key, payload)
+        return repository.upsert_broker_credential(
+            owner.id,
+            broker,
+            account_ref=account_ref,
+            encrypted_payload=encrypted,
+        )
+
+    result = _with_service(ctx, _callback)
+    if result is not None:
+        render_output(
+            ctx.obj.console,
+            ctx.obj.output_format,
+            {
+                "user_id": result.user_id,
+                "broker": result.broker,
+                "account_ref": result.account_ref,
+                "credential_version": result.credential_version,
+                "last_rotated_at": str(result.last_rotated_at),
+            },
+        )
+
+
+@credential_app.command("list")
+def list_credentials(
+    ctx: typer.Context,
+    user: str = typer.Option(..., "--user", help="Owner username (required)."),
+) -> None:
+    """List broker credentials for a user (payload not shown)."""
+
+    def _callback(repository, app_context):
+        owner = repository.get_user_by_username(user)
+        if owner is None:
+            raise ValueError(f"사용자를 찾을 수 없습니다: {user}")
+        records = repository.list_broker_credentials(owner.id)
+        return [
+            {
+                "broker": r.broker,
+                "account_ref": r.account_ref,
+                "credential_version": r.credential_version,
+                "last_rotated_at": str(r.last_rotated_at),
+            }
+            for r in records
+        ]
+
+    result = _with_service(ctx, _callback)
+    if result is not None:
+        if ctx.obj.output_format == "json":
+            render_output(ctx.obj.console, ctx.obj.output_format, result)
+        else:
+            for item in result if isinstance(result, list) else [result]:
+                ctx.obj.console.print(item)
+    if not result:
+        ctx.obj.console.print("No broker credentials found.")
+
+
+@credential_app.command("remove")
+def remove_credential(
+    ctx: typer.Context,
+    user: str = typer.Option(..., "--user", help="Owner username (required)."),
+    broker: str = typer.Option("kis", "--broker", help="Broker code (default: kis)."),
+    force: bool = typer.Option(False, "--force", help="Skip confirmation prompt."),
+) -> None:
+    """Remove a broker credential."""
+    _confirm(force, f"Remove {broker} credential for user '{user}'? This cannot be undone.")
+
+    def _callback(repository, app_context):
+        owner = repository.get_user_by_username(user)
+        if owner is None:
+            raise ValueError(f"사용자를 찾을 수 없습니다: {user}")
+        deleted = repository.delete_broker_credential(owner.id, broker)
+        if not deleted:
+            raise ValueError(f"인증 정보를 찾을 수 없습니다: user={user} broker={broker}")
+        return {"deleted": True, "user": user, "broker": broker}
+
+    result = _with_service(ctx, _callback)
+    if result is not None:
+        render_output(ctx.obj.console, ctx.obj.output_format, result)
diff --git a/app/cli/main.py b/app/cli/main.py
index 8e7b2b8..acc0f69 100644
--- a/app/cli/main.py
+++ b/app/cli/main.py
@@ -13,6 +13,7 @@ from app.cli.commands.service_tokens import token_app
 from app.cli.commands.portfolio import portfolio_app
 from app.cli.commands.strategy import strategy_app
 from app.cli.commands.user import user_app
+from app.cli.commands.credential import credential_app
 from app.core.config import Settings, get_settings
 from app.repositories.factory import get_portfolio_repository_from_settings
 from app.repositories.portfolio_repository import PortfolioRepository
@@ -51,6 +52,7 @@ def create_app(
     app.add_typer(strategy_app, name="strategy")
     app.add_typer(user_app, name="user")
     app.add_typer(token_app, name="service-token")
+    app.add_typer(credential_app, name="credential")
     register_health_commands(app)
     return app
 
diff --git a/app/repositories/postgres.py b/app/repositories/postgres.py
index e3f574c..cc9997f 100644
--- a/app/repositories/postgres.py
+++ b/app/repositories/postgres.py
@@ -1398,6 +1398,17 @@ class PostgresPortfolioRepository:
             row = cur.fetchone()
         return self._row_to_broker_credential(row)
 
+    def delete_broker_credential(self, user_id: str, broker: str) -> bool:
+        with self._connect().cursor() as cur:
+            cur.execute(
+                """
+                DELETE FROM broker_credentials
+                WHERE user_id = %s AND broker = %s
+                """,
+                (user_id, broker),
+            )
+            return cur.rowcount > 0
+
     # ------------------------------------------------------------------
     # Ledger trades
     # ------------------------------------------------------------------
diff --git a/docs/batches/bat-005_20260503_broker-credential-cli/implementation.md b/docs/batches/bat-005_20260503_broker-credential-cli/implementation.md
new file mode 100644
index 0000000..600d668
--- /dev/null
+++ b/docs/batches/bat-005_20260503_broker-credential-cli/implementation.md
@@ -0,0 +1,53 @@
+# BAT-005 Implementation Log
+
+- Status: completed
+- Batch: BAT-005
+- Profile: batch-lite
+- Completed: 2026-05-03
+
+## 구현 내역
+
+### 1. `app/repositories/postgres.py` — `delete_broker_credential` 추가
+
+```python
+def delete_broker_credential(self, user_id: str, broker: str) -> bool:
+    with self._connect().cursor() as cur:
+        cur.execute(
+            "DELETE FROM broker_credentials WHERE user_id = %s AND broker = %s",
+            (user_id, broker),
+        )
+        return cur.rowcount > 0
+```
+
+### 2. `app/cli/commands/credential.py` — 신규 생성
+
+- `credential_app = typer.Typer(help="Broker credential management commands.")`
+- `_with_service(ctx, callback)`: repository 생성 → execute_command → finally close. RuntimeError도 캐치해 stdout 출력 후 exit 1.
+- `set` 명령: `--user`, `--broker` (기본값 `kis`), `--account-ref`, `--app-key`, `--app-secret`, `--force`
+- `list` 명령: `--user` — encrypted_payload 제외 dict 리스트 출력
+- `remove` 명령: `--user`, `--broker`, `--force` — delete_broker_credential 호출
+
+### 3. `app/cli/main.py` — `credential_app` 등록
+
+```python
+from app.cli.commands.credential import credential_app
+...
+app.add_typer(credential_app, name="credential")
+```
+
+### 4. `tests/test_cli.py`
+
+- `FakeRepo.__init__`: `_broker_credentials: dict[tuple[str, str], BrokerCredential] = {}` 추가
+- `FakeRepo.upsert/list/get/delete_broker_credential` 메서드 추가
+- `_settings_with_enc_key()`, `build_runner_with_enc_key()` 헬퍼 추가
+- 신규 테스트 5개 추가
+
+### 5. `docs/project-structure.md` — CLI 모듈 목록 갱신
+
+- `app/cli/` 섹션에 `credential` 명령 그룹 추가
+- primary runtime 설명에 `broker credentials` 추가
+
+## 설계 결정
+
+- dict 리스트 출력은 `render_output`의 타입 매칭을 우회해 `console.print(item)` 직접 호출 (기존 render_output이 등록된 타입만 처리함)
+- `RuntimeError`(`CREDENTIAL_ENCRYPTION_KEY` 미설정)는 `_with_service` 헬퍼에서 캐치해 stdout으로 출력 후 exit 1 처리
diff --git a/docs/batches/bat-005_20260503_broker-credential-cli/index.md b/docs/batches/bat-005_20260503_broker-credential-cli/index.md
new file mode 100644
index 0000000..0611e6b
--- /dev/null
+++ b/docs/batches/bat-005_20260503_broker-credential-cli/index.md
@@ -0,0 +1,45 @@
+# BAT-005 Index
+
+- Status: release-candidate
+- Batch: BAT-005
+- Profile: batch-lite
+- Created: 2026-05-03
+
+## Included REQ
+
+| REQ | 제목 | Type | Priority |
+|-----|------|------|----------|
+| REQ-015 | CLI `credential` 명령 그룹 구현 (브로커 인증 정보 관리) | Interface | Medium |
+
+## Source Discovery
+
+- minor-change fast path (Discovery 없음)
+
+## Scope Summary
+
+- CLI `pfhub credential set/list/remove` 명령 그룹 신규 추가
+- `app/cli/commands/credential.py` 신규 생성 (`credential_app`)
+- `app/cli/main.py`에 `credential_app` 등록
+- `app/repositories/postgres.py`에 `delete_broker_credential` 메서드 추가
+- 기존 `broker_credentials` 테이블 / `upsert_broker_credential` / `list_broker_credentials` 재사용
+- 기존 Fernet 암호화 인프라 (`app/core/encryption.py`) 재사용
+- DB 스키마 변경 없음, HTTP API 변경 없음
+
+## Impacted Area
+
+- Docs:
+  - `docs/project-structure.md` — CLI 모듈 목록에 `credential.py` 추가
+- Modules:
+  - `app/cli/commands/credential.py` (신규)
+  - `app/cli/main.py` (`credential_app` 등록)
+  - `app/repositories/postgres.py` (`delete_broker_credential` 추가)
+- Tests:
+  - `tests/test_cli.py` — credential 명령 통합 테스트 추가
+
+## Stage Documents
+
+| Stage | File | Status |
+|-------|------|--------|
+| Planning | [planning.md](./planning.md) | confirmed |
+| Implementation | [implementation.md](./implementation.md) | completed |
+| Verification | [verification.md](./verification.md) | passed |
diff --git a/docs/batches/bat-005_20260503_broker-credential-cli/planning.md b/docs/batches/bat-005_20260503_broker-credential-cli/planning.md
new file mode 100644
index 0000000..7b6573a
--- /dev/null
+++ b/docs/batches/bat-005_20260503_broker-credential-cli/planning.md
@@ -0,0 +1,73 @@
+# BAT-005 Planning
+
+- Status: confirmed
+- Batch: BAT-005
+- Profile: batch-lite
+
+## Included REQ
+
+- REQ-015: CLI `credential` 명령 그룹 구현 (브로커 인증 정보 관리)
+
+## Out of Scope
+
+- HTTP API 엔드포인트 추가 (별도 REQ 대상)
+- 브로커 인증 정보 복호화 출력 (보안 정책상 CLI에서 plain text 노출 금지)
+- 브로커 종류 확장 (현재는 `kis` 기본값만 처리)
+
+## 구현 순서
+
+### 1단계: repository 메서드 추가
+
+- `app/repositories/postgres.py`
+  - `delete_broker_credential(user_id: str, broker: str) -> bool` 추가
+    - 레코드 존재 시 삭제 후 `True`, 미존재 시 `False` 반환
+
+### 2단계: CLI 명령 모듈 신규 생성
+
+- `app/cli/commands/credential.py`
+  - `credential_app = typer.Typer(help="Broker credential management commands.")`
+  - `_with_service(ctx, callback)` 헬퍼: repository 생성 → callback 실행 → finally close
+  - `set` 명령: `--user`, `--broker` (기본값 `kis`), `--account-ref`, `--app-key`, `--app-secret`
+    - `get_user_by_username` → `None`이면 `ValueError`
+    - `settings.require_credential_encryption_key()` → Fernet 암호화
+    - `upsert_broker_credential` 호출
+  - `list` 명령: `--user`
+    - `get_user_by_username` → `None`이면 `ValueError`
+    - `list_broker_credentials` 호출, `encrypted_payload` 제외 출력
+  - `remove` 명령: `--user`, `--broker`, `--force`
+    - `get_user_by_username` → `None`이면 `ValueError`
+    - `_confirm(force, ...)` 확인 후 `delete_broker_credential` 호출
+
+### 3단계: CLI 등록
+
+- `app/cli/main.py`
+  - `from app.cli.commands.credential import credential_app` import 추가
+  - `app.add_typer(credential_app, name="credential")` 등록
+
+### 4단계: 문서 갱신
+
+- `docs/project-structure.md` — CLI 모듈 목록에 `credential.py` 항목 추가
+
+### 5단계: 테스트
+
+- `tests/test_cli.py`
+  - `test_cli_credential_set_creates_record` (신규): alice 생성 후 set 실행 → list에 표시
+  - `test_cli_credential_list_hides_payload` (신규): list 출력에 `encrypted_payload` 미포함 확인
+  - `test_cli_credential_set_with_unknown_user_exits_error` (신규): 미존재 user → exit code 1
+  - `test_cli_credential_remove_deletes_record` (신규): set 후 remove → list에서 사라짐
+  - `test_cli_credential_set_requires_encryption_key` (신규): CREDENTIAL_ENCRYPTION_KEY 미설정 → exit code 1
+
+## Dependencies
+
+- Internal:
+  - `broker_credentials` 테이블 (migration 0014 — 이미 존재)
+  - `upsert_broker_credential`, `list_broker_credentials`, `get_broker_credential` (이미 존재)
+  - `app/core/encryption.py` — `encrypt_payload` (이미 존재)
+  - `app/core/config.py` — `settings.require_credential_encryption_key()` (이미 존재)
+  - `_confirm`, `execute_command`, `render_output` (기존 CLI 헬퍼 — 이미 존재)
+- External: 없음
+
+## Design Gate
+
+- Design Required Before Implementation: no
+- Reason: 기존 `_with_service` 헬퍼 패턴 재사용 (`user.py` 동일 구조). 구조/런타임 흐름 변경 없음.
diff --git a/docs/batches/bat-005_20260503_broker-credential-cli/verification.md b/docs/batches/bat-005_20260503_broker-credential-cli/verification.md
new file mode 100644
index 0000000..fda22ef
--- /dev/null
+++ b/docs/batches/bat-005_20260503_broker-credential-cli/verification.md
@@ -0,0 +1,61 @@
+# BAT-005 Verification
+
+- Status: passed
+- Batch: BAT-005
+- Profile: batch-lite
+- Verified: 2026-05-03
+
+## REQ Coverage
+
+### REQ-015: CLI `credential` 명령 그룹 구현 (브로커 인증 정보 관리)
+
+| AC # | 기준 | 검증 방법 | 결과 |
+|------|------|-----------|------|
+| AC-1 | alice 사용자 + 유효 enc key → `credential set` 실행 시 broker_credentials 레코드 생성(upsert) | `test_cli_credential_set_creates_record` | ✅ passed |
+| AC-2 | `credential list` 출력에 broker, account_ref, credential_version 포함 / encrypted_payload 미포함 | `test_cli_credential_list_hides_payload` | ✅ passed |
+| AC-3 | 존재하지 않는 username → exit code 1 + 에러 메시지 | `test_cli_credential_set_with_unknown_user_exits_error` | ✅ passed |
+| AC-4 | `credential remove --force` 후 list에서 사라짐 | `test_cli_credential_remove_deletes_record` | ✅ passed |
+| AC-5 | CREDENTIAL_ENCRYPTION_KEY 미설정 → exit code 1 + 에러 메시지 포함 | `test_cli_credential_set_requires_encryption_key` | ✅ passed |
+
+## Test Evidence
+
+### 실행 명령
+```bash
+python -m pytest tests/test_cli.py -q
+```
+
+### 결과
+```
+49 passed in 1.49s
+```
+
+- 신규 테스트 5개 모두 passed
+- 기존 테스트 44개 regression 없음
+
+### 신규 테스트 목록
+| 테스트 | AC |
+|--------|----|
+| `test_cli_credential_set_creates_record` | AC-1 |
+| `test_cli_credential_list_hides_payload` | AC-2 |
+| `test_cli_credential_set_with_unknown_user_exits_error` | AC-3 |
+| `test_cli_credential_remove_deletes_record` | AC-4 |
+| `test_cli_credential_set_requires_encryption_key` | AC-5 |
+
+## Implementation Summary
+
+| 파일 | 변경 내용 |
+|------|-----------|
+| `app/cli/commands/credential.py` | 신규 생성 — `credential_app`, `set`/`list`/`remove` 명령 |
+| `app/cli/main.py` | `credential_app` import 및 `app.add_typer(credential_app, name="credential")` 등록 |
+| `app/repositories/postgres.py` | `delete_broker_credential(user_id, broker) -> bool` 메서드 추가 |
+| `tests/test_cli.py` | `FakeRepo.upsert/list/get/delete_broker_credential`, 신규 테스트 5개 추가 |
+| `docs/project-structure.md` | CLI 명령 그룹 목록에 `credential` 추가 |
+
+## Baseline Document Sync
+
+- `docs/project-structure.md`: `app/cli/` 섹션에 `credential` 명령 그룹 추가 완료
+- 구조/런타임 흐름/인터페이스 계약 변경 없음 → `runtime-flows.md`, `interface-contract.md` 갱신 불필요
+
+## Residual Risk
+
+- 없음
diff --git a/docs/batches/index.md b/docs/batches/index.md
index ec1350c..619bee7 100644
--- a/docs/batches/index.md
+++ b/docs/batches/index.md
@@ -11,4 +11,5 @@
 | BAT-001 | standard | release-candidate | REQ-004, REQ-005, REQ-006, REQ-007, REQ-008, REQ-009, REQ-010 | dcy-002 | [bat-001_20260502_trex-basic-v1-api-contract](./bat-001_20260502_trex-basic-v1-api-contract/) |
 | BAT-002 | batch-lite | release-candidate | REQ-012 | minor-change | [bat-002_20260502_service-token-rotate-cli](./bat-002_20260502_service-token-rotate-cli/) |
 | BAT-003 | batch-lite | release-candidate | REQ-013 | dcy-003 | [bat-003_20260502_portfolio-list-user-required](./bat-003_20260502_portfolio-list-user-required/) |
-| BAT-004 | batch-lite | release-candidate | REQ-014 | minor-change | [bat-004_20260502_portfolio-create-user-required](./bat-004_20260502_portfolio-create-user-required/) |
\ No newline at end of file
+| BAT-004 | batch-lite | release-candidate | REQ-014 | minor-change | [bat-004_20260502_portfolio-create-user-required](./bat-004_20260502_portfolio-create-user-required/) |
+| BAT-005 | batch-lite | release-candidate | REQ-015 | minor-change | [bat-005_20260503_broker-credential-cli](./bat-005_20260503_broker-credential-cli/) |
\ No newline at end of file
diff --git a/docs/project-structure.md b/docs/project-structure.md
index 2d8dbe9..33f6562 100644
--- a/docs/project-structure.md
+++ b/docs/project-structure.md
@@ -27,7 +27,7 @@
 - Type: mixed
 - Planned Entry Points:
 - uvicorn app.main:app :: serve the authenticated HTTP API, OpenAPI docs, and startup bootstrap hooks
-- pfhub :: run operational CLI commands for health, users, portfolios, strategies, and service tokens
+- pfhub :: run operational CLI commands for health, users, portfolios, strategies, service tokens, and broker credentials
 - alembic upgrade head :: apply ordered database schema migrations for persistent environments
 
 ## Purpose
@@ -87,6 +87,7 @@
   - All v1 endpoints require service-token authentication (token_source=db, token_type=service).
 - app/cli/
   - Defines the Typer entrypoint, command groups, output helpers, and operator-facing command flows.
+  - Command groups: `portfolio`, `strategy`, `user`, `service-token`, `credential` (broker credential management), and health commands (`health-check`, `init-db`, `migrate-db`).
 - app/core/
   - Owns configuration loading, auth guards, security helpers, and shared error handling.
   - `encryption.py`: Fernet-based credential payload encrypt/decrypt helpers. Reads `CREDENTIAL_ENCRYPTION_KEY` env var via `Settings.require_credential_encryption_key()`.
diff --git a/docs/srs/Interface/req-015_broker-credential-cli.md b/docs/srs/Interface/req-015_broker-credential-cli.md
new file mode 100644
index 0000000..696be00
--- /dev/null
+++ b/docs/srs/Interface/req-015_broker-credential-cli.md
@@ -0,0 +1,108 @@
+# req-015: CLI `credential` 명령 그룹 구현 (브로커 인증 정보 관리)
+
+- Status: Approved
+- Type: Interface
+- Priority: Medium
+- Owner: repository-maintainers
+
+## Intent
+- 운영자가 CLI(`pfhub credential`)를 통해 KIS 브로커 인증 정보를 안전하게 등록, 조회, 삭제할 수 있어야 한다.
+- `broker_credentials` 테이블(migration 0014)과 기존 Fernet 암호화 인프라(`app/core/encryption.py`, `CREDENTIAL_ENCRYPTION_KEY`)를 재사용해 CLI 레이어만 추가한다.
+
+## Requirement
+- 시스템은 `pfhub credential set --user <username> --broker <broker> --account-ref <ref> --app-key <key> --app-secret <secret>` 명령을 제공해야 한다. 이 명령은 `{"app_key": ..., "app_secret": ...}` JSON을 Fernet으로 암호화한 뒤 `broker_credentials` 테이블에 upsert한다.
+- 시스템은 `pfhub credential list --user <username>` 명령을 제공해야 한다. 이 명령은 사용자의 브로커 인증 정보 목록을 반환하되, `encrypted_payload`는 출력하지 않는다.
+- 시스템은 `pfhub credential remove --user <username> --broker <broker> [--force]` 명령을 제공해야 한다. 이 명령은 해당 인증 정보 레코드를 삭제한다.
+- 존재하지 않는 사용자를 지정하면 에러 메시지와 함께 exit code 1로 종료해야 한다.
+
+## Acceptance Criteria
+1. Given alice 사용자와 유효한 `CREDENTIAL_ENCRYPTION_KEY`가 설정된 환경에서, When `pfhub credential set --user alice --broker kis --account-ref REF --app-key KEY --app-secret SECRET`을 실행하면, Then `broker_credentials` 테이블에 암호화된 payload로 레코드가 생성(또는 갱신)된다.
+2. Given `broker_credentials`에 alice의 kis 레코드가 있을 때, When `pfhub credential list --user alice`를 실행하면, Then broker, account_ref, credential_version, last_rotated_at이 출력되고 `encrypted_payload`는 포함되지 않는다.
+3. Given 존재하지 않는 username을 지정할 때, When `pfhub credential set --user unknown ...`을 실행하면, Then 에러 메시지와 함께 exit code 1로 종료된다.
+4. Given alice의 kis 인증 정보가 있을 때, When `pfhub credential remove --user alice --broker kis --force`를 실행하면, Then 해당 레코드가 삭제되고 `pfhub credential list --user alice`에서 더 이상 표시되지 않는다.
+5. Given `CREDENTIAL_ENCRYPTION_KEY`가 설정되지 않은 환경에서, When `pfhub credential set ...`을 실행하면, Then 설정 미비 에러 메시지와 함께 exit code 1로 종료된다.
+
+## Impacted Area
+- Docs: `docs/project-structure.md` (CLI 모듈 목록 갱신)
+- Modules:
+  - `app/cli/commands/credential.py` (신규 — `credential_app`, `set`, `list`, `remove` 명령)
+  - `app/cli/main.py` (`credential_app` 등록 추가)
+  - `app/repositories/postgres.py` (`delete_broker_credential` 메서드 추가)
+- Tests: `tests/test_cli.py` (credential 명령 통합 테스트 추가)
+
+## Notes
+- `broker_credentials` 테이블 DDL과 `upsert_broker_credential`, `list_broker_credentials`, `get_broker_credential` 메서드는 migration 0014에서 이미 구현됨. `delete_broker_credential` 메서드는 이번 REQ에서 추가.
+- `app/core/encryption.py`의 `encrypt_payload(key, plaintext)` 사용.
+- 기존 CLI 패턴(`_with_service` 헬퍼, `execute_command`, `render_output`, `_confirm`) 동일하게 적용.
+- `--broker` 기본값은 `kis`.
+
+## Change Log
+
+### CHG-20260503-02
+- Date: 2026-05-03
+- Author: repository-maintainers
+
+#### Change Summary
+- REQ-015 Approved 전환 — minor-change fast path (단일 저위험 REQ, CLI 레이어만 추가, 구조/런타임 영향 없음)
+
+#### Intent
+- Acceptance Criteria 5개 모두 구현 판단에 충분하며 blocking assumption 없음
+
+#### Acceptance Criteria Delta
+- Added: none
+- Updated: none
+- Removed: none
+
+#### Impacted Area Delta
+- Docs: none
+- Modules: none
+- Tests: none
+
+#### Delivery Trace Delta
+- Batches: BAT-005 (batch-lite)
+- Releases: 미정
+
+#### Revalidation Impact
+- Reverification Needed: no
+- Existing Implementation Invalidated: no
+- Status Recommendation: keep-current
+- Follow-up Action: run-batch-implementation 진행
+
+#### Validation Plan
+- BAT-005 verification 통과 확인
+
+---
+
+### CHG-20260503-01
+- Date: 2026-05-03
+- Author: repository-maintainers
+
+#### Change Summary
+- REQ-015 최초 작성 — CLI `credential` 명령 그룹 구현 (브로커 인증 정보 관리)
+
+#### Intent
+- 운영자가 KIS 브로커 인증 정보를 CLI로 관리할 수 있도록 Interface 레이어 추가
+
+#### Acceptance Criteria Delta
+- Added:
+  - 위 Acceptance Criteria 1~5 전체
+- Updated: none
+- Removed: none
+
+#### Impacted Area Delta
+- Docs: `docs/project-structure.md`
+- Modules: `app/cli/commands/credential.py` (신규), `app/cli/main.py`, `app/repositories/postgres.py`
+- Tests: `tests/test_cli.py`
+
+#### Delivery Trace Delta
+- Batches: 미정 (BAT-005 예정)
+- Releases: 미정
+
+#### Revalidation Impact
+- Reverification Needed: no
+- Existing Implementation Invalidated: no
+- Status Recommendation: keep-current
+- Follow-up Action: 없음
+
+#### Validation Plan
+- `tests/test_cli.py`에 credential 명령 통합 테스트 작성 후 `pytest tests/test_cli.py` 전체 통과 확인
diff --git a/docs/srs/index.md b/docs/srs/index.md
index c67acaf..98a3078 100644
--- a/docs/srs/index.md
+++ b/docs/srs/index.md
@@ -74,7 +74,7 @@
 
 ## Next Requirement ID
 
-- Current: `REQ-015`
+- Current: `REQ-016`
 - Rule: `Requirement Register`에 있는 가장 큰 REQ 번호보다 정확히 1 커야 한다.
 
 ## Requirement Register
@@ -95,9 +95,12 @@
 | REQ-012 | service-token rotate CLI 명령 구현 | Interface | Approved | Medium | repository-maintainers | [REQ-012](./Interface/req-012_service-token-rotate-cli.md) |
 | REQ-013 | CLI `portfolio list --user` 필수화 및 소유자 기반 조회 | Interface | Implemented | Medium | repository-maintainers | [REQ-013](./Interface/req-013_portfolio-list-user-required.md) |
 | REQ-014 | CLI `portfolio create --user` 필수화 및 소유자 설정 | Interface | Implemented | Medium | repository-maintainers | [REQ-014](./Interface/req-014_portfolio-create-user-required.md) |
+| REQ-015 | CLI `credential` 명령 그룹 구현 (브로커 인증 정보 관리) | Interface | Approved | Medium | repository-maintainers | [REQ-015](./Interface/req-015_broker-credential-cli.md) |
 
 ## Recent Change Log Summary
 
+- 2026-05-03: REQ-015 Approved 전환 — minor-change fast path (단일 저위험 REQ)
+- 2026-05-03: REQ-015 Proposed 생성 — CLI `credential` 명령 그룹 구현 (브로커 인증 정보 관리)
 - 2026-05-02: REQ-014 Implemented 전환 — BAT-004 verification evidence 확인 (44 passed)
 - 2026-05-02: REQ-014 Approved 직행 (minor-change) — CLI `portfolio create --user` 필수화 및 소유자 설정
 - 2026-05-02: REQ-013 Implemented 전환 — BAT-003 verification evidence 확인 (41 passed)
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 9a03bb6..eeb5100 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -10,7 +10,7 @@ from typer.testing import CliRunner
 from app.cli.main import create_app
 from app.core.config import Settings
 from app.core.security import hash_token, token_prefix
-from app.domain.models import AuthToken, LedgerEntry, Portfolio, PortfolioComment, PortfolioTag, StrategySet, User
+from app.domain.models import AuthToken, BrokerCredential, LedgerEntry, Portfolio, PortfolioComment, PortfolioTag, StrategySet, User
 
 
 class FakeRepo:
@@ -25,6 +25,7 @@ class FakeRepo:
         self._tags: dict[str, PortfolioTag] = {}
         self._auth_tokens: dict[str, AuthToken] = {}
         self._token_seq = 1
+        self._broker_credentials: dict[tuple[str, str], BrokerCredential] = {}
         self.closed = False
 
     def close(self) -> None:
@@ -429,6 +430,43 @@ class FakeRepo:
             raise ValueError("댓글을 찾을 수 없습니다")
         del self._comments[comment_id]
 
+    # --- broker credentials ---
+
+    def upsert_broker_credential(
+        self,
+        user_id: str,
+        broker: str,
+        *,
+        account_ref: str,
+        encrypted_payload: str,
+    ) -> BrokerCredential:
+        key = (user_id, broker)
+        existing = self._broker_credentials.get(key)
+        version = (existing.credential_version + 1) if existing else 1
+        credential = BrokerCredential(
+            user_id=user_id,
+            broker=broker,
+            account_ref=account_ref,
+            encrypted_payload=encrypted_payload,
+            credential_version=version,
+            last_rotated_at=datetime.now(timezone.utc),
+        )
+        self._broker_credentials[key] = credential
+        return credential
+
+    def list_broker_credentials(self, user_id: str) -> list[BrokerCredential]:
+        return [c for (uid, _), c in self._broker_credentials.items() if uid == user_id]
+
+    def get_broker_credential(self, user_id: str, broker: str) -> BrokerCredential | None:
+        return self._broker_credentials.get((user_id, broker))
+
+    def delete_broker_credential(self, user_id: str, broker: str) -> bool:
+        key = (user_id, broker)
+        if key in self._broker_credentials:
+            del self._broker_credentials[key]
+            return True
+        return False
+
 
 def _settings() -> Settings:
     return Settings(db_enabled=True, allowed_origins_raw="http://localhost:3000")
@@ -1281,3 +1319,146 @@ def test_cli_portfolio_list_in_memory_mode_filters_owner() -> None:
 
     assert result.exit_code == 0
     assert "005930:tv" in result.stdout
+
+
+# ---------------------------------------------------------------------------
+# credential command tests
+# ---------------------------------------------------------------------------
+
+_TEST_ENC_KEY = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
+
+
+def _settings_with_enc_key() -> Settings:
+    return Settings(
+        db_enabled=True,
+        allowed_origins_raw="http://localhost:3000",
+        credential_encryption_key=_TEST_ENC_KEY,
+    )
+
+
+def build_runner_with_enc_key(repo: FakeRepo) -> CliRunner:
+    app = create_app(settings_factory=_settings_with_enc_key, repository_factory=lambda settings: repo)
+    runner = CliRunner()
+    runner.app = app
+    return runner
+
+
+def test_cli_credential_set_creates_record() -> None:
+    repo = FakeRepo()
+    repo.create_user("alice", permission="write")
+    runner = build_runner_with_enc_key(repo)
+
+    result = runner.invoke(
+        runner.app,
+        [
+            "credential", "set",
+            "--user", "alice",
+            "--broker", "kis",
+            "--account-ref", "12345678",
+            "--app-key", "PS_APP_KEY",
+            "--app-secret", "PS_APP_SECRET",
+            "--force",
+        ],
+    )
+
+    assert result.exit_code == 0
+    assert "kis" in result.stdout
+    assert "12345678" in result.stdout
+    assert "PS_APP_KEY" not in result.stdout  # encrypted_payload 미출력 확인
+
+
+def test_cli_credential_list_hides_payload() -> None:
+    repo = FakeRepo()
+    repo.create_user("alice", permission="write")
+    runner = build_runner_with_enc_key(repo)
+
+    runner.invoke(
+        runner.app,
+        [
+            "credential", "set",
+            "--user", "alice",
+            "--broker", "kis",
+            "--account-ref", "12345678",
+            "--app-key", "MYKEY",
+            "--app-secret", "MYSECRET",
+            "--force",
+        ],
+    )
+    result = runner.invoke(runner.app, ["credential", "list", "--user", "alice"])
+
+    assert result.exit_code == 0
+    assert "kis" in result.stdout
+    assert "12345678" in result.stdout
+    assert "MYKEY" not in result.stdout
+    assert "MYSECRET" not in result.stdout
+
+
+def test_cli_credential_set_with_unknown_user_exits_error() -> None:
+    repo = FakeRepo()
+    runner = build_runner_with_enc_key(repo)
+
+    result = runner.invoke(
+        runner.app,
+        [
+            "credential", "set",
+            "--user", "ghost",
+            "--broker", "kis",
+            "--account-ref", "REF",
+            "--app-key", "KEY",
+            "--app-secret", "SECRET",
+            "--force",
+        ],
+    )
+
+    assert result.exit_code == 1
+    assert "ghost" in result.stdout
+
+
+def test_cli_credential_remove_deletes_record() -> None:
+    repo = FakeRepo()
+    repo.create_user("alice", permission="write")
+    runner = build_runner_with_enc_key(repo)
+
+    runner.invoke(
+        runner.app,
+        [
+            "credential", "set",
+            "--user", "alice",
+            "--broker", "kis",
+            "--account-ref", "REF",
+            "--app-key", "KEY",
+            "--app-secret", "SECRET",
+            "--force",
+        ],
+    )
+    remove_result = runner.invoke(
+        runner.app,
+        ["credential", "remove", "--user", "alice", "--broker", "kis", "--force"],
+    )
+    list_result = runner.invoke(runner.app, ["credential", "list", "--user", "alice"])
+
+    assert remove_result.exit_code == 0
+    assert list_result.exit_code == 0
+    assert "kis" not in list_result.stdout
+
+
+def test_cli_credential_set_requires_encryption_key() -> None:
+    repo = FakeRepo()
+    repo.create_user("alice", permission="write")
+    runner = build_runner(repo)  # CREDENTIAL_ENCRYPTION_KEY 미설정 runner
+
+    result = runner.invoke(
+        runner.app,
+        [
+            "credential", "set",
+            "--user", "alice",
+            "--broker", "kis",
+            "--account-ref", "REF",
+            "--app-key", "KEY",
+            "--app-secret", "SECRET",
+            "--force",
+        ],
+    )
+
+    assert result.exit_code == 1
+    assert "CREDENTIAL_ENCRYPTION_KEY" in result.stdout