File size: 2,719 Bytes
8f969b7 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | import os
import json
import anthropic
from typing import Dict, Any
class ClaudeCustomPrompt:
"""
ComfyUI node that generates prompts using Claude API
"""
def __init__(self):
self.api_key = os.getenv("ANTHROPIC_API_KEY", "")
self.client = None
@classmethod
def INPUT_TYPES(cls) -> Dict[str, Any]:
return {
"required": {
"system_prompt": ("STRING", {
"default": "You are an AI art prompt generator. Reply only with a prompt for image generation, no explanations.",
"multiline": True
}),
"user_input": ("STRING", {
"default": "Generate a prompt for: space cat",
"multiline": True
}),
},
"optional": {
"api_key": ("STRING", {
"default": "",
"multiline": False
}),
}
}
RETURN_TYPES = ("STRING",)
FUNCTION = "generate_prompt"
CATEGORY = "prompt generation"
def generate_prompt(self, system_prompt: str, user_input: str, api_key: str = "") -> tuple[str]:
# Use provided API key or fallback to environment variable
key_to_use = api_key if api_key else self.api_key
if not key_to_use:
raise ValueError("No API key provided. Please set ANTHROPIC_API_KEY environment variable or provide it as input.")
# Initialize client if needed
if not self.client or api_key:
self.client = anthropic.Anthropic(api_key=key_to_use)
try:
# Make API call to Claude
message = self.client.messages.create(
model="claude-3-opus-20240229",
max_tokens=1000,
temperature=0,
system=system_prompt,
messages=[
{
"role": "user",
"content": [
{
"type": "text",
"text": user_input
}
]
}
]
)
# Extract the generated prompt
generated_prompt = message.content[0].text.strip()
return (generated_prompt,)
except Exception as e:
raise RuntimeError(f"Error generating prompt: {str(e)}")
# Node registration
NODE_CLASS_MAPPINGS = {
"ClaudeCustomPrompt": ClaudeCustomPrompt
}
NODE_DISPLAY_NAME_MAPPINGS = {
"ClaudeCustomPrompt": "Claude Prompt Generator"
}
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