```python
from fastapi import FastAPI
from pydantic import BaseModel

import helpers  # noqa: F401

app = FastAPI()


class Document(BaseModel):
    name: str
    text: str


@app.post("/documents")
def create_document(doc: Document):
    saved_bytes = helpers.save_document(doc.name, doc.text)
    return {"bytes": saved_bytes}, 201
```