***
id: 5c8545c2-4b2c-423e-8639-f8830e212c2c
slug: /reference/amazon-bedrock/swaig/functions/parameters
title: parameters
description: The parameters object for the SWAIG function.
max-toc-depth: 3
----------------
The `parameters` object is used to define the input data that will be passed to the function.
## **Properties**
An object that accepts the following properties.
Defines the top-level type of the parameters. Must be set to `"object"`
An object containing the [properties](#properties) definitions to be passed to the function
The `properties` object defines the input data that will be passed to the function. It supports different types of parameters, each with their own set of configuration options. The property name is a key in the `properties` object that is user-defined. An object with dynamic property names, where:- **Keys:** User-defined strings, that set the property name.
- **Values:** Must be one of the valid [schema types](#schema-types). Learn more about valid schema types from the [JSON Schema documentation](https://json-schema.org/understanding-json-schema/reference)
### Schema Types
Each property in the `properties` object must use one of the following schema types:
The type of property the AI is passing to the function. Must be set to `"string"`
A description of the property
An array of strings that are the possible values
The default string value
Regular expression pattern for the string value to match
Whether the property can be null
```yaml
parameters:
type: object
properties:
property_name:
type: string
description: A string value
pattern: ^[a-z]+$
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"type": "string",
"description": "A string value",
"pattern": "^[a-z]+$"
}
}
}
}
```
The type of parameter the AI is passing to the function. Must be set to `"integer"`
A description of the property
An array of integers that are the possible values
The default integer value
Whether the property can be null
```yaml
parameters:
type: object
properties:
property_name:
type: integer
description: An integer value
default: 10
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"type": "integer",
"description": "An integer value",
"default": 10
}
}
}
}
```
The type of parameter the AI is passing to the function. Must be set to `"number"`
A description of the property
An array of numbers that are the possible values
The default number value
Whether the property can be null
```yaml
parameters:
type: object
properties:
property_name:
type: number
description: A number value
default: 10.5
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"type": "number",
"description": "A number value",
"default": 10.5
}
}
}
}
```
The type of parameter the AI is passing to the function. Must be set to `"boolean"`
A description of the property
The default boolean value
Whether the property can be null
```yaml
parameters:
type: object
properties:
property_name:
type: boolean
description: A boolean value
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"type": "boolean",
"description": "A boolean value"
}
}
}
}
```
The type of parameter(s) the AI is passing to the function. Must be set to `"array"`
A description of the property
An array of items. These items must be one of the valid [schema types](#schema-types)
The default array value
Whether the property can be null
```yaml
parameters:
type: object
properties:
property_name:
type: array
description: Array of strings and objects
items:
- type: string
description: A single string value that must be one of the possible values
default: "one"
enum:
- "one"
- "two"
- "three"
- type: object
description: An object with a required property, `desired_value`, that must be one of the possible values
required:
- desired_value
properties:
desired_value:
type: string
description: A single string value that must be one of the possible values
enum:
- "four"
- "five"
- "six"
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"type": "array",
"description": "Array of strings and objects",
"items": [
{
"type": "string",
"description": "A single string value that must be one of the possible values",
"default": "one",
"enum": [
"one",
"two",
"three"
]
},
{
"type": "object",
"description": "An object with a required property, `desired_value`, that must be one of the possible values",
"required": [
"desired_value"
],
"properties": {
"desired_value": {
"type": "string",
"description": "A single string value that must be one of the possible values",
"enum": [
"four",
"five",
"six"
]
}
}
}
]
}
}
}
}
```
The type of parameter(s) the AI is passing to the function. Must be set to `"object"`
A description of the property
An object that contains the [properties](#properties) definitions to be passed to the function.
The property names that are required for the `properties` object
The default object value
Whether the property can be null
```yaml
parameters:
type: object
properties:
name:
type: string
description: The user's name
age:
type: integer
description: The user's age
address:
type: object
description: The user's address
properties:
street:
type: string
description: The user's street address
city:
type: string
description: The user's city
required:
- street
- city
```
```json
{
"parameters": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "The user's name"
},
"age": {
"type": "integer",
"description": "The user's age"
},
"address": {
"type": "object",
"description": "The user's address",
"properties": {
"street": {
"type": "string",
"description": "The user's street address"
},
"city": {
"type": "string",
"description": "The user's city"
}
},
"required": [
"street",
"city"
]
}
}
}
}
```
Specifies that the data must be valid against exactly one of the provided schemas.
An array of schemas where exactly one must be valid.
The value must be a valid [schema type](#schema-types)
```yaml
parameters:
type: object
properties:
property_name:
oneOf:
- type: string
description: A string value
- type: integer
description: An integer value
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"oneOf": [
{
"type": "string",
"description": "A string value"
},
{
"type": "integer",
"description": "An integer value"
}
]
}
}
}
}
```
Specifies that the data must be valid against all of the provided schemas.
An array of schemas where all must be valid.
The value must be a valid [schema type](#schema-types)
```yaml
parameters:
type: object
properties:
property_name:
allOf:
- type: string
description: A string value
- type: integer
description: An integer value
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"allOf": [
{
"type": "string",
"description": "A string value"
},
{
"type": "integer",
"description": "An integer value"
}
]
}
}
}
}
```
Specifies that the data must be valid against at least one of the provided schemas.
An array of schemas where at least one must be valid.
The value must be a valid [schema type](#schema-types)
```yaml
parameters:
type: object
properties:
property_name:
anyOf:
- type: string
description: A string value
- type: integer
description: An integer value
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"anyOf": [
{
"type": "string",
"description": "A string value"
},
{
"type": "integer",
"description": "An integer value"
}
]
}
}
}
}
```
Specifies an exact value that the data must match.
The value that will be set as a constant value for the property
```yaml
parameters:
type: object
properties:
property_name:
const: "constant_value"
```
```json
{
"parameters": {
"type": "object",
"properties": {
"property_name": {
"const": "constant_value"
}
}
}
}
```
Array of required property names from the `properties` object