Authentication issue with Google API key in Weaviate

General
1

I’m trying to use Google’s text vectorizer (text2vec_google) with Weaviate Cloud but encountering authentication issues. Despite providing the Google API key in headers, I’m getting a 401 error indicating invalid authentication credentials.

Environment

  • Weaviate Cloud instance
  • Python client v4
  • Using Google AI Studio API key

Code

import weaviate
import weaviate.classes as wc
from weaviate.classes.config import Property, DataType

# Connect to Weaviate
google_api_key = "my-google-api-key"  # Actual key removed
headers = {
    "X-Goog-Studio-Api-Key": google_api_key,  # Also tried X-Goog-Api-Key, X-Palm-Api-Key
}
weaviate_url = "https://my-instance.weaviate.cloud"  
weaviate_api_key = "my-weaviate-api-key"  # Actual key removed

client = weaviate.connect_to_weaviate_cloud(
    cluster_url=weaviate_url,
    auth_credentials=weaviate.auth.AuthApiKey(weaviate_api_key),
    headers=headers
)

# Create collection with Google vectorizer
client.collections.create(
    name="KnowledgeUnit",
    properties=[
        wc.config.Property(name="chunks", data_type=wc.config.DataType.TEXT)
    ],
    vectorizer_config=wc.config.Configure.Vectorizer.text2vec_google(
        project_id="t1",
        model_id="textembedding-gecko@latest"
    )
)

Error message:

Google API Key: no api key found neither in request header: X-Palm-Api-Key or X-Goog-Api-Key or X-Goog-Vertex-Api-Key or X-Goog-Studio-Api-Key nor in environment variable under PALM_APIKEY or GOOGLE_APIKEY


What I've tried
Using different header formats: X-Goog-Api-Key, X-Goog-Studio-Api-Key.


Questions:
What is the correct header name to use for Google AI Studio API keys?
Is there a specific format required for the API key?
2

Hi @Anushka_Sonawane ,

Good Day!

Welcome to Weaviate Community!

Could you try using X-Palm-Api-Key as a workaround on this issue? Found this related threads below which could be related on this issue:

This seems to be a google module issue which keys are not recognized on google’s end. Let me know if this works for you!