# Invocation API

Each invocation's `invoke` method is provided a single arg - the Invocation
Context.

This object provides access to various methods, used to interact with the
application. Loading and saving images, logging messages, etc.

!!! warning ""

    This API may shift slightly until the release of v4.0.0 as we work through a few final updates to the Model Manager.

```py
class MyInvocation(BaseInvocation):
  ...
  def invoke(self, context: InvocationContext) -> ImageOutput:
      image_pil = context.images.get_pil(image_name)
      # Do something to the image
      image_dto = context.images.save(image_pil)
      # Log a message
      context.logger.info(f"Did something cool, image saved!")
      ...
```

<!-- prettier-ignore-start -->
::: invokeai.app.services.shared.invocation_context.InvocationContext
    options:
        members: false

::: invokeai.app.services.shared.invocation_context.ImagesInterface

::: invokeai.app.services.shared.invocation_context.TensorsInterface

::: invokeai.app.services.shared.invocation_context.ConditioningInterface

::: invokeai.app.services.shared.invocation_context.ModelsInterface

::: invokeai.app.services.shared.invocation_context.LoggerInterface

::: invokeai.app.services.shared.invocation_context.ConfigInterface

::: invokeai.app.services.shared.invocation_context.UtilInterface

::: invokeai.app.services.shared.invocation_context.BoardsInterface
<!-- prettier-ignore-end -->