4. Use Integration in Node

class GetWeatherNode(BaseNode[GetWeatherConfig]):
    node_name = "get_weather"
    title = "Get Weather"
    description = "Returns weather data for a given city"
    category = NodeCategory.DATA
    color = "#4A90E2"
    integrations = {"weather_api": ["api_key"]}  # integration_type: [required_fields]

    # ... same inputs/outputs ...

    async def call(self, ctx: RemoteExecutionContext, city: str) -> dict:
        import httpx

        # Get credentials from the execution context
        creds = ctx.get_integration_credentials("weather_api")
        api_key = creds.get("api_key", "")

        if not api_key:
            raise ValueError("Weather API key not configured")

        # Call the real API
        async with httpx.AsyncClient() as client:
            response = await client.get(
                "https://api.openweathermap.org/data/2.5/weather",
                params={"q": city, "appid": api_key, "units": "metric"},
            )
            response.raise_for_status()
            data = response.json()

        return {
            "temperature": f"{data['main']['temp']}°C",
            "description": data["weather"][0]["description"].capitalize(),
        }

class CrossPostNode(BaseNode[NodeConfiguration]):
    node_name = "cross_post"
    integrations = {
        "twitter": ["api_key", "api_secret"],
        "linkedin": ["access_token"],
    }

    async def call(self, ctx: RemoteExecutionContext, message: str) -> dict:
        twitter_creds = ctx.get_integration_credentials("twitter")
        linkedin_creds = ctx.get_integration_credentials("linkedin")

        # Use both sets of credentials...
        return {"status": "posted"}

async def call(self, ctx: RemoteExecutionContext, city: str) -> dict:
    creds = ctx.get_integration_credentials("weather_api")

    if not creds or not creds.get("api_key"):
        raise ValueError(
            "Weather API credentials not configured. "
            "Go to Workspace Settings → Integrations to add your API key."
        )

    # Safe to use credentials...