diff --git a/app/schemas/analytics_selfstat.py b/app/schemas/analytics_selfstat.py
new file mode 100644
index 0000000..dea8be7
--- /dev/null
+++ b/app/schemas/analytics_selfstat.py
@@ -0,0 +1,32 @@
+"""自报计数上报 schema。字段名对齐客户端 payload(snake_case),累计值语义。"""
+from __future__ import annotations
+
+from pydantic import BaseModel, Field
+
+
+class SelfStatEventIn(BaseModel):
+    event: str = Field(max_length=64)
+    attempted: int = 0
+    drop_capture: int = 0
+    delivered: int = 0
+    drop_undelivered: int = 0
+
+
+class SelfStatBatchIn(BaseModel):
+    device_id: str = Field(max_length=64)
+    epoch_id: str = Field(max_length=64)
+    sent_at: int | None = None
+    app_ver: str | None = Field(default=None, max_length=32)
+    oem: str | None = Field(default=None, max_length=32)
+    os: str | None = Field(default=None, max_length=32)
+    batches_attempted: int = 0
+    batches_ok: int = 0
+    batches_fail: int = 0
+    retries: int = 0
+    queue_depth: int = 0
+    events: list[SelfStatEventIn] = Field(default_factory=list, max_length=200)
+
+
+class SelfStatIngestOut(BaseModel):
+    ok: bool = True
+    snapshot_id: int