String

{
  "type": "object",
  "properties": {
    "username": {
      "type": "string",
      "minLength": 3,
      "maxLength": 120
    }
  },
  "required": ["username"],
  "additionalProperties": false
}

from typing import Annotated
from pydantic import BaseModel, ConfigDict, StringConstraints

class Payload(BaseModel):
    model_config = ConfigDict(extra="forbid")

    username: Annotated[str, StringConstraints(min_length=3, max_length=120)]

import { z } from "zod";

const payloadSchema = z
  .object({
    username: z.string().min(3).max(120),
  })
  .strict();

{
  "type": "object",
  "properties": {
    "country_code": {
      "type": "string",
      "pattern": "^[A-Z]{2}$"
    }
  },
  "required": ["country_code"],
  "additionalProperties": false
}

from typing import Annotated
from pydantic import BaseModel, ConfigDict, StringConstraints

class Payload(BaseModel):
    model_config = ConfigDict(extra="forbid")

    country_code: Annotated[str, StringConstraints(pattern=r"^[A-Z]{2}$")]

import { z } from "zod";

const payloadSchema = z
  .object({
    country_code: z.string().regex(/^[A-Z]{2}$/),
  })
  .strict();

{
  "type": "object",
  "properties": {
    "email": { "type": "string", "format": "email" },
    "website": { "type": "string", "format": "uri" }
  },
  "required": ["email", "website"],
  "additionalProperties": false
}

from pydantic import AnyUrl, BaseModel, EmailStr, ConfigDict

class Payload(BaseModel):
    model_config = ConfigDict(extra="forbid")

    email: EmailStr
    website: AnyUrl

import { z } from "zod";

const payloadSchema = z
  .object({
    email: z.string().email(),
    website: z.string().url(),
  })
  .strict();