diff --git a/apps/api/src/models/__init__.py b/apps/api/src/models/__init__.py
index 96baf4b9..8859b237 100644
--- a/apps/api/src/models/__init__.py
+++ b/apps/api/src/models/__init__.py
@@ -10,7 +10,7 @@ AWOOOI Models Package
 """
 
 # Approval Models (Phase 2)
-from src.models.approval import (
+from apps.api.src.models.approval import (
     ApprovalRequest,
     ApprovalRequestCreate,
     ApprovalRequestResponse,
@@ -28,7 +28,7 @@ from src.models.approval import (
 )
 
 # Incident Models (Phase 6 - 認知覺醒)
-from src.models.incident import (
+from apps.api.src.models.incident import (
     AIDecisionChain,
     Incident,
     IncidentCreate,
@@ -41,7 +41,7 @@ from src.models.incident import (
 )
 
 # NVIDIA Models (ADR-036 - Nemotron Tool Calling)
-from src.models.nvidia import (
+from apps.api.src.models.nvidia import (
     NvidiaProviderResult,
     NvidiaResponse,
     NvidiaUsage,
@@ -50,6 +50,13 @@ from src.models.nvidia import (
     ToolDefinition,
 )
 
+# Aider Models (aider-watch v2)
+from apps.api.src.models.aider import (
+    AiderBatchIn,
+    AiderEventIn,
+    EventType,
+)
+
 __all__ = [
     # Approval
     "ApprovalRequest",
@@ -83,4 +90,8 @@ __all__ = [
     "ToolCall",
     "ToolCallValidationResult",
     "ToolDefinition",
+    # Aider (aider-watch v2)
+    "AiderBatchIn",
+    "AiderEventIn",
+    "EventType",
 ]
diff --git a/apps/api/src/models/aider.py b/apps/api/src/models/aider.py
new file mode 100644
index 00000000..1434605b
--- /dev/null
+++ b/apps/api/src/models/aider.py
@@ -0,0 +1,35 @@
+"""aider-watch event pydantic schemas。由 Mac client POST 送來。"""
+from __future__ import annotations
+from datetime import datetime
+from typing import Any, Literal
+from pydantic import BaseModel, ConfigDict, Field, field_validator
+
+EventType = Literal[
+    "session_start", "file_edit", "error", "commit",
+    "silent_timeout", "session_end", "raw",
+]
+
+
+class AiderEventIn(BaseModel):
+    """單筆 aider event 輸入 schema。"""
+    model_config = ConfigDict(frozen=True, extra="forbid")
+
+    ts: datetime
+    session_id: str = Field(min_length=1, max_length=64)
+    host: str = Field(default="ogt-mac", max_length=64)
+    type: EventType
+    payload: dict[str, Any] = Field(default_factory=dict)
+
+    @field_validator("ts")
+    @classmethod
+    def _ensure_tz(cls, v: datetime) -> datetime:
+        if v.tzinfo is None:
+            raise ValueError("ts must be timezone-aware")
+        return v
+
+
+class AiderBatchIn(BaseModel):
+    """批次 event 輸入（最多 50 筆/次）。"""
+    model_config = ConfigDict(frozen=True, extra="forbid")
+
+    events: list[AiderEventIn] = Field(min_length=1, max_length=50)
diff --git a/apps/api/src/models/incident.py b/apps/api/src/models/incident.py
index 98296bf4..310be902 100644
--- a/apps/api/src/models/incident.py
+++ b/apps/api/src/models/incident.py
@@ -28,7 +28,7 @@ from uuid import UUID, uuid4
 from pydantic import BaseModel, Field, field_validator
 
 # 復用現有模型 (避免重複定義)
-from src.models.approval import BlastRadius
+from apps.api.src.models.approval import BlastRadius
 
 # =============================================================================
 # Incident 專用 Enums
diff --git a/apps/api/tests/test_aider_event_models.py b/apps/api/tests/test_aider_event_models.py
new file mode 100644
index 00000000..ba41890e
--- /dev/null
+++ b/apps/api/tests/test_aider_event_models.py
@@ -0,0 +1,57 @@
+# apps/api/tests/test_aider_event_models.py | 2026-04-20 @ Asia/Taipei
+from datetime import datetime, timezone, timedelta
+import pytest
+from pydantic import ValidationError
+from apps.api.src.models.aider import AiderEventIn, AiderBatchIn
+
+TAIPEI = timezone(timedelta(hours=8))
+
+
+def _base(t="session_start", payload=None):
+    return {
+        "ts": datetime(2026, 4, 20, 10, 0, tzinfo=TAIPEI).isoformat(),
+        "session_id": "01J7XYZABC",
+        "host": "ogt-mac",
+        "type": t,
+        "payload": payload or {},
+    }
+
+
+def test_accepts_all_7_types():
+    for t in ("session_start", "file_edit", "error", "commit",
+              "silent_timeout", "session_end", "raw"):
+        ev = AiderEventIn(**_base(t=t))
+        assert ev.type == t
+
+
+def test_rejects_unknown_type():
+    with pytest.raises(ValidationError):
+        AiderEventIn(**_base(t="bogus"))
+
+
+def test_rejects_missing_session_id():
+    d = _base(); del d["session_id"]
+    with pytest.raises(ValidationError):
+        AiderEventIn(**d)
+
+
+def test_rejects_missing_ts():
+    d = _base(); del d["ts"]
+    with pytest.raises(ValidationError):
+        AiderEventIn(**d)
+
+
+def test_batch_max_50():
+    with pytest.raises(ValidationError):
+        AiderBatchIn(events=[_base() for _ in range(51)])
+
+
+def test_batch_accepts_1():
+    b = AiderBatchIn(events=[_base()])
+    assert len(b.events) == 1
+
+
+def test_host_default():
+    d = _base(); del d["host"]
+    ev = AiderEventIn(**d)
+    assert ev.host == "ogt-mac"