# Router: dependencies_v3

**File:** app/routers/dependencies_v3.py

**Routes found:** 0

**Functions:** 2 — get_account_context_optional, get_account_context

**Classes:** 4 — PaginationParams, StatusFilterParams, SerializationParams, DelayParams



## Routes
- (no @router.<method> decorators found)



## From-imports

- app.models.auth_models

- fastapi

- typing



## File preview (first 20 lines)

```python

from fastapi import Depends, Header, HTTPException, Query, Response, status
from typing import Optional, Union
import logging
import asyncio

from app.models.auth_models import AccountContext

log = logging.getLogger(__name__)

# --- Account Context Dependencies ---

def get_account_context_optional(
    x_account_id: Optional[str] = Header(None, min_length=11, max_length=22),
    x_no_account_id: Optional[str] = Header(None, min_length=3, max_length=100),
    x_no_account_id_token: Optional[str] = Query(None, alias='jwt', min_length=11),
    x_aether_api_key: Optional[str] = Header(None, min_length=11, max_length=22),
) -> AccountContext:
    """
    Resolves the account context and enforces API Key validation.
    Uses DEFERRED imports to prevent circular dependency at startup.

```