Extra Data Types

Beyond basic types, JustAPI supports all standard library and Pydantic types:

UUID

from uuid import UUID
from justapi import JustAPIApp

app = JustAPIApp()

@app.get("/users/{user_id}")
def get_user(user_id: UUID):
    return {"user_id": str(user_id)}

GET /users/550e8400-e29b-41d4-a716-446655440000 validates the UUID format.

datetime and date

from datetime import datetime, date
from justapi import JustAPIApp

app = JustAPIApp()

@app.post("/events")
def create_event(start: datetime, end: date = None):
    return {"start": start.isoformat(), "end": end.isoformat() if end else None}

Accepts ISO 8601 strings:

datetime: "2026-07-25T10:30:00Z"
date: "2026-07-25"

Enum

from enum import Enum
from justapi import JustAPIApp

class Priority(str, Enum):
    low = "low"
    medium = "medium"
    high = "high"

app = JustAPIApp()

@app.post("/tasks")
def create_task(priority: Priority):
    return {"priority": priority.value}

The docs will show a dropdown with the allowed values.

Decimal

from decimal import Decimal
from justapi import JustAPIApp

app = JustAPIApp()

@app.post("/payments")
def process_payment(amount: Decimal):
    return {"amount": str(amount)}

Literal Types

from typing import Literal
from justapi import JustAPIApp

app = JustAPIApp()

@app.get("/status")
def get_status(status: Literal["active", "inactive"]):
    return {"status": status}

See Also

Python Types Intro — basic types
Query Parameters & String Validations — string validation
Path Parameters & Numeric Validations — numeric validation