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ComfyUI/comfy_api_nodes/nodes_stability.py
Alexander Piskun d2c502e629 convert nodes_stability.py to V3 schema (#9497)
2025-08-30 23:20:17 -04:00

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from inspect import cleandoc
from typing import Optional
from typing_extensions import override
from comfy_api.latest import ComfyExtension, io as comfy_io
from comfy_api_nodes.apis.stability_api import (
StabilityUpscaleConservativeRequest,
StabilityUpscaleCreativeRequest,
StabilityAsyncResponse,
StabilityResultsGetResponse,
StabilityStable3_5Request,
StabilityStableUltraRequest,
StabilityStableUltraResponse,
StabilityAspectRatio,
Stability_SD3_5_Model,
Stability_SD3_5_GenerationMode,
get_stability_style_presets,
)
from comfy_api_nodes.apis.client import (
ApiEndpoint,
HttpMethod,
SynchronousOperation,
PollingOperation,
EmptyRequest,
)
from comfy_api_nodes.apinode_utils import (
bytesio_to_image_tensor,
tensor_to_bytesio,
validate_string,
)
import torch
import base64
from io import BytesIO
from enum import Enum
class StabilityPollStatus(str, Enum):
finished = "finished"
in_progress = "in_progress"
failed = "failed"
def get_async_dummy_status(x: StabilityResultsGetResponse):
if x.name is not None or x.errors is not None:
return StabilityPollStatus.failed
elif x.finish_reason is not None:
return StabilityPollStatus.finished
return StabilityPollStatus.in_progress
class StabilityStableImageUltraNode(comfy_io.ComfyNode):
"""
Generates images synchronously based on prompt and resolution.
"""
@classmethod
def define_schema(cls):
return comfy_io.Schema(
node_id="StabilityStableImageUltraNode",
display_name="Stability AI Stable Image Ultra",
category="api node/image/Stability AI",
description=cleandoc(cls.__doc__ or ""),
inputs=[
comfy_io.String.Input(
"prompt",
multiline=True,
default="",
tooltip="What you wish to see in the output image. A strong, descriptive prompt that clearly defines" +
"elements, colors, and subjects will lead to better results. " +
"To control the weight of a given word use the format `(word:weight)`," +
"where `word` is the word you'd like to control the weight of and `weight`" +
"is a value between 0 and 1. For example: `The sky was a crisp (blue:0.3) and (green:0.8)`" +
"would convey a sky that was blue and green, but more green than blue.",
),
comfy_io.Combo.Input(
"aspect_ratio",
options=[x.value for x in StabilityAspectRatio],
default=StabilityAspectRatio.ratio_1_1.value,
tooltip="Aspect ratio of generated image.",
),
comfy_io.Combo.Input(
"style_preset",
options=get_stability_style_presets(),
tooltip="Optional desired style of generated image.",
),
comfy_io.Int.Input(
"seed",
default=0,
min=0,
max=4294967294,
step=1,
display_mode=comfy_io.NumberDisplay.number,
control_after_generate=True,
tooltip="The random seed used for creating the noise.",
),
comfy_io.Image.Input(
"image",
optional=True,
),
comfy_io.String.Input(
"negative_prompt",
default="",
tooltip="A blurb of text describing what you do not wish to see in the output image. This is an advanced feature.",
force_input=True,
optional=True,
),
comfy_io.Float.Input(
"image_denoise",
default=0.5,
min=0.0,
max=1.0,
step=0.01,
tooltip="Denoise of input image; 0.0 yields image identical to input, 1.0 is as if no image was provided at all.",
optional=True,
),
],
outputs=[
comfy_io.Image.Output(),
],
hidden=[
comfy_io.Hidden.auth_token_comfy_org,
comfy_io.Hidden.api_key_comfy_org,
comfy_io.Hidden.unique_id,
],
is_api_node=True,
)
@classmethod
async def execute(
cls,
prompt: str,
aspect_ratio: str,
style_preset: str,
seed: int,
image: Optional[torch.Tensor] = None,
negative_prompt: str = "",
image_denoise: Optional[float] = 0.5,
) -> comfy_io.NodeOutput:
validate_string(prompt, strip_whitespace=False)
# prepare image binary if image present
image_binary = None
if image is not None:
image_binary = tensor_to_bytesio(image, total_pixels=1504*1504).read()
else:
image_denoise = None
if not negative_prompt:
negative_prompt = None
if style_preset == "None":
style_preset = None
files = {
"image": image_binary
}
auth = {
"auth_token": cls.hidden.auth_token_comfy_org,
"comfy_api_key": cls.hidden.api_key_comfy_org,
}
operation = SynchronousOperation(
endpoint=ApiEndpoint(
path="/proxy/stability/v2beta/stable-image/generate/ultra",
method=HttpMethod.POST,
request_model=StabilityStableUltraRequest,
response_model=StabilityStableUltraResponse,
),
request=StabilityStableUltraRequest(
prompt=prompt,
negative_prompt=negative_prompt,
aspect_ratio=aspect_ratio,
seed=seed,
strength=image_denoise,
style_preset=style_preset,
),
files=files,
content_type="multipart/form-data",
auth_kwargs=auth,
)
response_api = await operation.execute()
if response_api.finish_reason != "SUCCESS":
raise Exception(f"Stable Image Ultra generation failed: {response_api.finish_reason}.")
image_data = base64.b64decode(response_api.image)
returned_image = bytesio_to_image_tensor(BytesIO(image_data))
return comfy_io.NodeOutput(returned_image)
class StabilityStableImageSD_3_5Node(comfy_io.ComfyNode):
"""
Generates images synchronously based on prompt and resolution.
"""
@classmethod
def define_schema(cls):
return comfy_io.Schema(
node_id="StabilityStableImageSD_3_5Node",
display_name="Stability AI Stable Diffusion 3.5 Image",
category="api node/image/Stability AI",
description=cleandoc(cls.__doc__ or ""),
inputs=[
comfy_io.String.Input(
"prompt",
multiline=True,
default="",
tooltip="What you wish to see in the output image. A strong, descriptive prompt that clearly defines elements, colors, and subjects will lead to better results.",
),
comfy_io.Combo.Input(
"model",
options=[x.value for x in Stability_SD3_5_Model],
),
comfy_io.Combo.Input(
"aspect_ratio",
options=[x.value for x in StabilityAspectRatio],
default=StabilityAspectRatio.ratio_1_1.value,
tooltip="Aspect ratio of generated image.",
),
comfy_io.Combo.Input(
"style_preset",
options=get_stability_style_presets(),
tooltip="Optional desired style of generated image.",
),
comfy_io.Float.Input(
"cfg_scale",
default=4.0,
min=1.0,
max=10.0,
step=0.1,
tooltip="How strictly the diffusion process adheres to the prompt text (higher values keep your image closer to your prompt)",
),
comfy_io.Int.Input(
"seed",
default=0,
min=0,
max=4294967294,
step=1,
display_mode=comfy_io.NumberDisplay.number,
control_after_generate=True,
tooltip="The random seed used for creating the noise.",
),
comfy_io.Image.Input(
"image",
optional=True,
),
comfy_io.String.Input(
"negative_prompt",
default="",
tooltip="Keywords of what you do not wish to see in the output image. This is an advanced feature.",
force_input=True,
optional=True,
),
comfy_io.Float.Input(
"image_denoise",
default=0.5,
min=0.0,
max=1.0,
step=0.01,
tooltip="Denoise of input image; 0.0 yields image identical to input, 1.0 is as if no image was provided at all.",
optional=True,
),
],
outputs=[
comfy_io.Image.Output(),
],
hidden=[
comfy_io.Hidden.auth_token_comfy_org,
comfy_io.Hidden.api_key_comfy_org,
comfy_io.Hidden.unique_id,
],
is_api_node=True,
)
@classmethod
async def execute(
cls,
model: str,
prompt: str,
aspect_ratio: str,
style_preset: str,
seed: int,
cfg_scale: float,
image: Optional[torch.Tensor] = None,
negative_prompt: str = "",
image_denoise: Optional[float] = 0.5,
) -> comfy_io.NodeOutput:
validate_string(prompt, strip_whitespace=False)
# prepare image binary if image present
image_binary = None
mode = Stability_SD3_5_GenerationMode.text_to_image
if image is not None:
image_binary = tensor_to_bytesio(image, total_pixels=1504*1504).read()
mode = Stability_SD3_5_GenerationMode.image_to_image
aspect_ratio = None
else:
image_denoise = None
if not negative_prompt:
negative_prompt = None
if style_preset == "None":
style_preset = None
files = {
"image": image_binary
}
auth = {
"auth_token": cls.hidden.auth_token_comfy_org,
"comfy_api_key": cls.hidden.api_key_comfy_org,
}
operation = SynchronousOperation(
endpoint=ApiEndpoint(
path="/proxy/stability/v2beta/stable-image/generate/sd3",
method=HttpMethod.POST,
request_model=StabilityStable3_5Request,
response_model=StabilityStableUltraResponse,
),
request=StabilityStable3_5Request(
prompt=prompt,
negative_prompt=negative_prompt,
aspect_ratio=aspect_ratio,
seed=seed,
strength=image_denoise,
style_preset=style_preset,
cfg_scale=cfg_scale,
model=model,
mode=mode,
),
files=files,
content_type="multipart/form-data",
auth_kwargs=auth,
)
response_api = await operation.execute()
if response_api.finish_reason != "SUCCESS":
raise Exception(f"Stable Diffusion 3.5 Image generation failed: {response_api.finish_reason}.")
image_data = base64.b64decode(response_api.image)
returned_image = bytesio_to_image_tensor(BytesIO(image_data))
return comfy_io.NodeOutput(returned_image)
class StabilityUpscaleConservativeNode(comfy_io.ComfyNode):
"""
Upscale image with minimal alterations to 4K resolution.
"""
@classmethod
def define_schema(cls):
return comfy_io.Schema(
node_id="StabilityUpscaleConservativeNode",
display_name="Stability AI Upscale Conservative",
category="api node/image/Stability AI",
description=cleandoc(cls.__doc__ or ""),
inputs=[
comfy_io.Image.Input("image"),
comfy_io.String.Input(
"prompt",
multiline=True,
default="",
tooltip="What you wish to see in the output image. A strong, descriptive prompt that clearly defines elements, colors, and subjects will lead to better results.",
),
comfy_io.Float.Input(
"creativity",
default=0.35,
min=0.2,
max=0.5,
step=0.01,
tooltip="Controls the likelihood of creating additional details not heavily conditioned by the init image.",
),
comfy_io.Int.Input(
"seed",
default=0,
min=0,
max=4294967294,
step=1,
display_mode=comfy_io.NumberDisplay.number,
control_after_generate=True,
tooltip="The random seed used for creating the noise.",
),
comfy_io.String.Input(
"negative_prompt",
default="",
tooltip="Keywords of what you do not wish to see in the output image. This is an advanced feature.",
force_input=True,
optional=True,
),
],
outputs=[
comfy_io.Image.Output(),
],
hidden=[
comfy_io.Hidden.auth_token_comfy_org,
comfy_io.Hidden.api_key_comfy_org,
comfy_io.Hidden.unique_id,
],
is_api_node=True,
)
@classmethod
async def execute(
cls,
image: torch.Tensor,
prompt: str,
creativity: float,
seed: int,
negative_prompt: str = "",
) -> comfy_io.NodeOutput:
validate_string(prompt, strip_whitespace=False)
image_binary = tensor_to_bytesio(image, total_pixels=1024*1024).read()
if not negative_prompt:
negative_prompt = None
files = {
"image": image_binary
}
auth = {
"auth_token": cls.hidden.auth_token_comfy_org,
"comfy_api_key": cls.hidden.api_key_comfy_org,
}
operation = SynchronousOperation(
endpoint=ApiEndpoint(
path="/proxy/stability/v2beta/stable-image/upscale/conservative",
method=HttpMethod.POST,
request_model=StabilityUpscaleConservativeRequest,
response_model=StabilityStableUltraResponse,
),
request=StabilityUpscaleConservativeRequest(
prompt=prompt,
negative_prompt=negative_prompt,
creativity=round(creativity,2),
seed=seed,
),
files=files,
content_type="multipart/form-data",
auth_kwargs=auth,
)
response_api = await operation.execute()
if response_api.finish_reason != "SUCCESS":
raise Exception(f"Stability Upscale Conservative generation failed: {response_api.finish_reason}.")
image_data = base64.b64decode(response_api.image)
returned_image = bytesio_to_image_tensor(BytesIO(image_data))
return comfy_io.NodeOutput(returned_image)
class StabilityUpscaleCreativeNode(comfy_io.ComfyNode):
"""
Upscale image with minimal alterations to 4K resolution.
"""
@classmethod
def define_schema(cls):
return comfy_io.Schema(
node_id="StabilityUpscaleCreativeNode",
display_name="Stability AI Upscale Creative",
category="api node/image/Stability AI",
description=cleandoc(cls.__doc__ or ""),
inputs=[
comfy_io.Image.Input("image"),
comfy_io.String.Input(
"prompt",
multiline=True,
default="",
tooltip="What you wish to see in the output image. A strong, descriptive prompt that clearly defines elements, colors, and subjects will lead to better results.",
),
comfy_io.Float.Input(
"creativity",
default=0.3,
min=0.1,
max=0.5,
step=0.01,
tooltip="Controls the likelihood of creating additional details not heavily conditioned by the init image.",
),
comfy_io.Combo.Input(
"style_preset",
options=get_stability_style_presets(),
tooltip="Optional desired style of generated image.",
),
comfy_io.Int.Input(
"seed",
default=0,
min=0,
max=4294967294,
step=1,
display_mode=comfy_io.NumberDisplay.number,
control_after_generate=True,
tooltip="The random seed used for creating the noise.",
),
comfy_io.String.Input(
"negative_prompt",
default="",
tooltip="Keywords of what you do not wish to see in the output image. This is an advanced feature.",
force_input=True,
optional=True,
),
],
outputs=[
comfy_io.Image.Output(),
],
hidden=[
comfy_io.Hidden.auth_token_comfy_org,
comfy_io.Hidden.api_key_comfy_org,
comfy_io.Hidden.unique_id,
],
is_api_node=True,
)
@classmethod
async def execute(
cls,
image: torch.Tensor,
prompt: str,
creativity: float,
style_preset: str,
seed: int,
negative_prompt: str = "",
) -> comfy_io.NodeOutput:
validate_string(prompt, strip_whitespace=False)
image_binary = tensor_to_bytesio(image, total_pixels=1024*1024).read()
if not negative_prompt:
negative_prompt = None
if style_preset == "None":
style_preset = None
files = {
"image": image_binary
}
auth = {
"auth_token": cls.hidden.auth_token_comfy_org,
"comfy_api_key": cls.hidden.api_key_comfy_org,
}
operation = SynchronousOperation(
endpoint=ApiEndpoint(
path="/proxy/stability/v2beta/stable-image/upscale/creative",
method=HttpMethod.POST,
request_model=StabilityUpscaleCreativeRequest,
response_model=StabilityAsyncResponse,
),
request=StabilityUpscaleCreativeRequest(
prompt=prompt,
negative_prompt=negative_prompt,
creativity=round(creativity,2),
style_preset=style_preset,
seed=seed,
),
files=files,
content_type="multipart/form-data",
auth_kwargs=auth,
)
response_api = await operation.execute()
operation = PollingOperation(
poll_endpoint=ApiEndpoint(
path=f"/proxy/stability/v2beta/results/{response_api.id}",
method=HttpMethod.GET,
request_model=EmptyRequest,
response_model=StabilityResultsGetResponse,
),
poll_interval=3,
completed_statuses=[StabilityPollStatus.finished],
failed_statuses=[StabilityPollStatus.failed],
status_extractor=lambda x: get_async_dummy_status(x),
auth_kwargs=auth,
node_id=cls.hidden.unique_id,
)
response_poll: StabilityResultsGetResponse = await operation.execute()
if response_poll.finish_reason != "SUCCESS":
raise Exception(f"Stability Upscale Creative generation failed: {response_poll.finish_reason}.")
image_data = base64.b64decode(response_poll.result)
returned_image = bytesio_to_image_tensor(BytesIO(image_data))
return comfy_io.NodeOutput(returned_image)
class StabilityUpscaleFastNode(comfy_io.ComfyNode):
"""
Quickly upscales an image via Stability API call to 4x its original size; intended for upscaling low-quality/compressed images.
"""
@classmethod
def define_schema(cls):
return comfy_io.Schema(
node_id="StabilityUpscaleFastNode",
display_name="Stability AI Upscale Fast",
category="api node/image/Stability AI",
description=cleandoc(cls.__doc__ or ""),
inputs=[
comfy_io.Image.Input("image"),
],
outputs=[
comfy_io.Image.Output(),
],
hidden=[
comfy_io.Hidden.auth_token_comfy_org,
comfy_io.Hidden.api_key_comfy_org,
comfy_io.Hidden.unique_id,
],
is_api_node=True,
)
@classmethod
async def execute(cls, image: torch.Tensor) -> comfy_io.NodeOutput:
image_binary = tensor_to_bytesio(image, total_pixels=4096*4096).read()
files = {
"image": image_binary
}
auth = {
"auth_token": cls.hidden.auth_token_comfy_org,
"comfy_api_key": cls.hidden.api_key_comfy_org,
}
operation = SynchronousOperation(
endpoint=ApiEndpoint(
path="/proxy/stability/v2beta/stable-image/upscale/fast",
method=HttpMethod.POST,
request_model=EmptyRequest,
response_model=StabilityStableUltraResponse,
),
request=EmptyRequest(),
files=files,
content_type="multipart/form-data",
auth_kwargs=auth,
)
response_api = await operation.execute()
if response_api.finish_reason != "SUCCESS":
raise Exception(f"Stability Upscale Fast failed: {response_api.finish_reason}.")
image_data = base64.b64decode(response_api.image)
returned_image = bytesio_to_image_tensor(BytesIO(image_data))
return comfy_io.NodeOutput(returned_image)
class StabilityExtension(ComfyExtension):
@override
async def get_node_list(self) -> list[type[comfy_io.ComfyNode]]:
return [
StabilityStableImageUltraNode,
StabilityStableImageSD_3_5Node,
StabilityUpscaleConservativeNode,
StabilityUpscaleCreativeNode,
StabilityUpscaleFastNode,
]
async def comfy_entrypoint() -> StabilityExtension:
return StabilityExtension()
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