optimizely-opal.opal-tools-sdk 0.1.16.dev0

SDK for creating Opal-compatible tools services

Opal Tools SDK for Python

This SDK simplifies the creation of tools services compatible with the Opal Tools Management Service.

Features

• Easy definition of tool functions with decorators
• Automatic generation of discovery endpoints
• Parameter validation and type checking
• Authentication helpers
• FastAPI integration
• Island components for interactive UI responses

Installation

pip install optimizely-opal.opal-tools-sdk

Note: While the package is installed as optimizely-opal.opal-tools-sdk, you'll still import it in your code as opal_tools_sdk:

# Import using the package name
from opal_tools_sdk import ToolsService, tool, IslandResponse, IslandConfig

Usage

from opal_tools_sdk import ToolsService, tool
from pydantic import BaseModel
from fastapi import FastAPI

app = FastAPI()
tools_service = ToolsService(app)

class WeatherParameters(BaseModel):
    location: str
    units: str = "metric"

@tool("get_weather", "Gets current weather for a location")
async def get_weather(parameters: WeatherParameters):
    # Implementation...
    return {"temperature": 22, "condition": "sunny"}

# Discovery endpoint is automatically created at /discovery

Authentication

The SDK provides two ways to require authentication for your tools:

1. Using the @requires_auth decorator

from opal_tools_sdk import ToolsService, tool, AuthData
from opal_tools_sdk.auth import requires_auth
from pydantic import BaseModel
from fastapi import FastAPI
from typing import Optional

app = FastAPI()
tools_service = ToolsService(app)

class CalendarParameters(BaseModel):
    date: str
    timezone: str = "UTC"

# Single authentication requirement
@requires_auth(provider="google", scope_bundle="calendar", required=True)
@tool("get_calendar_events", "Gets calendar events for a date")
async def get_calendar_events(parameters: CalendarParameters, auth_data: Optional[AuthData] = None):
    # The auth_data parameter contains authentication information
    if auth_data:
        token = auth_data["credentials"]["access_token"]

    # Use the token to make authenticated requests
    # ...

    return {"events": ["Meeting at 10:00", "Lunch at 12:00"]}

# Multiple authentication requirements (tool can work with either provider)
@requires_auth(provider="google", scope_bundle="calendar", required=True)
@requires_auth(provider="microsoft", scope_bundle="outlook", required=True)
@tool("get_calendar_availability", "Check calendar availability")
async def get_calendar_availability(parameters: CalendarParameters, auth_data: Optional[AuthData] = None):
    provider = ""
    token = ""
    
    if auth_data:
        provider = auth_data["provider"]
        token = auth_data["credentials"]["access_token"]

        if provider == "google":
            # Use Google Calendar API
            pass
        elif provider == "microsoft":
            # Use Microsoft Outlook API
            pass

    return {"available": True, "provider_used": provider}

2. Specifying auth requirements in the @tool decorator

@tool(
    "get_email",
    "Gets emails from the user's inbox",
    auth_requirements=[
        {"provider": "google", "scope_bundle": "gmail", "required": True}
    ]
)
async def get_email(parameters: EmailParameters, auth_data: Optional[AuthData] = None):
    # Implementation...
    return {"emails": ["Email 1", "Email 2"]}

Island Components

The SDK includes Island components for creating interactive UI responses that allow users to input data and trigger actions.

Weather Tool with Interactive Island

from opal_tools_sdk import ToolsService, tool, IslandResponse, IslandConfig
from pydantic import BaseModel
from fastapi import FastAPI

app = FastAPI()
tools_service = ToolsService(app)

class WeatherParameters(BaseModel):
    location: str
    units: str = "metric"

@tool("get_weather", "Gets current weather for a location")
async def get_weather(parameters: WeatherParameters):
    # Get weather data (implementation details omitted)
    weather_data = {"temperature": 22, "condition": "sunny", "humidity": 65}
    
    # Create an interactive island for weather settings
    island = IslandConfig(
        fields=[
            IslandConfig.Field(
                name="location",
                label="Location",
                type="string",
                value=parameters.location
            ),
            IslandConfig.Field(
                name="units",
                label="Temperature Units",
                type="string",
                value=parameters.units,
                options=["metric", "imperial", "kelvin"]
            ),
            IslandConfig.Field(
                name="current_temp",
                label="Current Temperature",
                type="string",
                value=f"{weather_data['temperature']}°{'C' if parameters.units == 'metric' else 'F'}"
            )
        ],
        actions=[
            IslandConfig.Action(
                name="refresh_weather",
                label="Refresh Weather",
                type="button",
                endpoint="/tools/get_weather",
                operation="update"
            )
        ]
    )
    
    return IslandResponse.create([island])

Island Components

IslandConfig.Field

Fields represent data inputs in the UI:

• name: Programmatic field identifier
• label: Human-readable label
• type: Field type ("string", "boolean", "json")
• value: Current field value (optional)
• hidden: Whether to hide from user (optional, default: False)
• options: Available options for selection (optional)

IslandConfig.Action

Actions represent buttons or operations:

• name: Programmatic action identifier
• label: Human-readable button label
• type: UI element type (typically "button")
• endpoint: API endpoint to call
• operation: Operation type (default: "create")

IslandConfig

Contains the complete island configuration:

• fields: List of IslandConfig.Field objects
• actions: List of IslandConfig.Action objects
• type: Island type for UI rendering (optional, default: None)
• icon: Icon to display in the island (optional, default: None)

IslandResponse

The response wrapper for islands:

• Use IslandResponse.create([islands]) to create responses
• Supports multiple islands per response

Type Definitions

The SDK provides several TypedDict and dataclass definitions for better type safety:

Authentication Types

• AuthData: TypedDict containing provider and credentials information
• Credentials: TypedDict with access_token, org_sso_id, customer_id, instance_id, and product_sku
• AuthRequirement: Dataclass for specifying authentication requirements

Execution Environment

• Environment: TypedDict specifying execution mode ("headless" or "interactive")

Parameter Types

• ParameterType: Enum for supported parameter types (string, integer, number, boolean, list, dictionary)
• Parameter: Dataclass for tool parameter definitions
• Function: Dataclass for complete tool function definitions

These types are automatically imported when you import from opal_tools_sdk and provide better IDE support and type checking.

Documentation

See full documentation for more examples and configuration options.