Weaviate Cloud

Follow these steps to connect to a Weaviate Cloud (WCD) instance.

Retrieve your API key and REST endpoint

When connecting to a Weaviate Cloud cluster, you need an API key and the REST endpoint URL for authentication. To retrieve your connection details, follow these steps:

Open the Weaviate Cloud console and select your cluster.
On the Cluster details page, find the Admin API key and REST Endpoint URL.
Copy the needed key and URL and store them in a safe location.

Grab the REST Endpoint URL.

Grab the Admin API key.

REST Endpoint vs gRPC Endpoint

When using an official Weaviate client library, you need to authenticate using the REST Endpoint. The client will infer the gRPC endpoint automatically and use the more performant gRPC protocol when available.

Connection example

To connect, use the REST Endpoint and the Admin API key stored as environment variables:

import weaviate
from weaviate.classes.init import Auth

# Best practice: store your credentials in environment variables
weaviate_url = os.environ["WEAVIATE_URL"]
weaviate_api_key = os.environ["WEAVIATE_API_KEY"]

# Connect to Weaviate Cloud
client = weaviate.connect_to_weaviate_cloud(
    cluster_url=weaviate_url,
    auth_credentials=Auth.api_key(weaviate_api_key),
)

print(client.is_ready())  # Should print: `True`

client.close()  # Free up resources

API docs

# Set these environment variables
# WEAVIATE_URL       your Weaviate instance URL
# WEAVIATE_API_KEY   your Weaviate instance API key

import os
import weaviate

# Create the client
client = weaviate.Client(
    url=os.getenv("WEAVIATE_URL"),
    auth_client_secret=weaviate.auth.AuthApiKey(api_key=os.getenv("WEAVIATE_API_KEY")),
)

print(client.is_ready())

API docs Deprecated (v3)

// Set these environment variables
// WEAVIATE_URL      your WCD instance URL
// WEAVIATE_API_KEY  your WCD instance API key


import weaviate, { WeaviateClient } from 'weaviate-client';

const weaviateURL = process.env.WEAVIATE_URL as string
const weaviateKey = process.env.WEAVIATE_API_KEY as string

const client: WeaviateClient = await weaviate.connectToWeaviateCloud(weaviateURL, {
    authCredentials: new weaviate.ApiKey(weaviateKey),
  }
)

API docs

// Set these environment variables
// WEAVIATE_URL      your WCD instance URL
// WEAVIATE_API_KEY  your WCD instance API key

import weaviate, { ApiKey } from 'weaviate-ts-client';

// Create the client
const client = weaviate.client({
  scheme: 'https',
  host: process.env.WEAVIATE_URL,
  apiKey: new ApiKey(process.env.WEAVIATE_API_KEY),
});

console.log(client)

// Set these environment variables
// WEAVIATE_HOSTNAME    Your Weaviate instance hostname
// WEAVIATE_API_KEY  	Your Weaviate instance API key

package main

import (
	"context"
	"fmt"
	"os"

	"github.com/weaviate/weaviate-go-client/v4/weaviate"
	"github.com/weaviate/weaviate-go-client/v4/weaviate/auth"
)

// Create the client
func CreateClient() {
	cfg := weaviate.Config{
		Host:       os.Getenv("WEAVIATE_HOSTNAME"),
		Scheme:     "https",
		AuthConfig: auth.ApiKey{Value: os.Getenv("WEAVIATE_API_KEY")},
		Headers:    nil,
	}

	client, err := weaviate.NewClient(cfg)
	if err != nil {
		fmt.Println(err)
	}

	// Check the connection
	live, err := client.Misc().LiveChecker().Do(context.Background())
	if err != nil {
		panic(err)
	}
	fmt.Printf("%v", live)

}

func main() {
	CreateClient()
}

API docs

caution

This client uses the hostname parameter (without the https scheme) instead of a complete URL.

// Set these environment variables
// WEAVIATE_HOSTNAME        Your Weaviate instance hostname
// WEAVIATE_API_KEY         Your Weaviate instance API key

package your.application;

import io.weaviate.client.Config;
import io.weaviate.client.WeaviateClient;
import io.weaviate.client.WeaviateAuthClient;

public class App
{
    public static void main( String[] args ) throws Exception
    {

    String scheme = "https";
    String host = System.getenv("WEAVIATE_HOSTNAME");
    String apiKey = System.getenv("WEAVIATE_API_KEY");

    Config config = new Config(scheme, host);
    WeaviateClient client = WeaviateAuthClient.apiKey(config, apiKey);
    }
}

API docs

caution

This client uses the hostname parameter (without the https scheme) instead of a complete URL.

# Set these environment variables
# WEAVIATE_URL      your Weaviate instance URL
# WEAVIATE_API_KEY  your Weaviate instance API key

curl https://${WEAVIATE_URL}/v1/meta -H "Authorization: Bearer ${WEAVIATE_API_KEY}" | jq

Third party API keys

If you use API-based models for vectorization or RAG, you must provide an API key for the service. To add third party API keys, follow these examples:

import os
import weaviate
from weaviate.classes.init import Auth

# Best practice: store your credentials in environment variables
weaviate_url = os.environ["WEAVIATE_URL"]
weaviate_api_key = os.environ["WEAVIATE_API_KEY"]
cohere_api_key = os.environ["COHERE_API_KEY"]

# Connect to Weaviate Cloud
client = weaviate.connect_to_weaviate_cloud(
    cluster_url=weaviate_url,
    auth_credentials=Auth.api_key(weaviate_api_key),
    headers={
        "X-Cohere-Api-Key": cohere_api_key
    }
)

print(client.is_ready())

API docs

# Set these environment variables
# WEAVIATE_URL       your Weaviate instance URL
# WEAVIATE_API_KEY   your Weaviate instance API key
# COHERE_API_KEY     your Cohere API key

import os
import weaviate
from weaviate.auth import AuthApiKey

# Connect to Weaviate Cloud
client = weaviate.Client(
    url=os.getenv("WEAVIATE_URL"),
    auth_client_secret=weaviate.auth.AuthApiKey(api_key=os.getenv("WEAVIATE_API_KEY")),
    additional_headers={
        "X-Cohere-Api-Key": os.getenv("COHERE_API_KEY"),
    },
)

print(client.is_ready())

API docs Deprecated (v3)

// Set these environment variables
// WEAVIATE_URL      your Weaviate instance URL
// WEAVIATE_API_KEY  your Weaviate instance API key
// COHERE_API_KEY    your Cohere API key

import weaviate, { WeaviateClient } from 'weaviate-client';

const weaviateURL = process.env.WEAVIATE_URL as string
const weaviateKey = process.env.WEAVIATE_API_KEY as string
const cohereKey = process.env.COHERE_API_KEY as string

const client: WeaviateClient = await weaviate.connectToWeaviateCloud(weaviateURL, {
  authCredentials: new weaviate.ApiKey(weaviateKey),
    headers: {
     'X-Cohere-Api-Key': cohereKey,
   }
  }
)

API docs

// Set these environment variables
// WEAVIATE_URL      your Weaviate instance URL
// WEAVIATE_API_KEY  your Weaviate instance API key
// COHERE_API_KEY    your Cohere API key

import weaviate, { ApiKey } from 'weaviate-ts-client';

// Create the client
const client = weaviate.client({
  scheme: 'https',
  host: process.env.WEAVIATE_URL,
  apiKey: new ApiKey(process.env.WEAVIATE_API_KEY),
  headers: {
    'X-Cohere-Api-Key': process.env.COHERE_API_KEY,
  },
});

console.log(client)

// Set these environment variables
// WEAVIATE_URL      your Weaviate instance URL
// WEAVIATE_API_KEY  your Weaviate instance API key
// COHERE_API_KEY    your Cohere API key

package main

import (
  "context"
  "fmt"
  "os"
  "github.com/weaviate/weaviate-go-client/v4/weaviate"
  "github.com/weaviate/weaviate-go-client/v4/weaviate/auth"
)

// Create the client
func CreateClient() {
cfg := weaviate.Config{
    Host: os.Getenv("WEAVIATE_HOSTNAME"),   // URL only, no scheme prefix
    Scheme: "https",
    AuthConfig: auth.ApiKey{Value: os.Getenv("WEAVIATE_API_KEY")},
    Headers: map[string]string{
        "X-Cohere-Api-Key": os.Getenv("WEAVIATE_COHERE_KEY"),
    },
}

client, err := weaviate.NewClient(cfg)
if err != nil{
    fmt.Println(err)
}

// Check the connection
live, err := client.Misc().LiveChecker().Do(context.Background())
if err != nil {
	panic(err)
}
fmt.Printf("%v", live)
}

func main() {
	CreateClient()
}

API docs

// Set these environment variables
// WEAVIATE_HOSTNAME        Your Weaviate instance hostname
// WEAVIATE_API_KEY         Your Weaviate instance API key
// COHERE_API_KEY           Your Cohere API key

package your.application;

import java.util.HashMap;
import java.util.Map;
import io.weaviate.client.Config;
import io.weaviate.client.WeaviateClient;
import io.weaviate.client.WeaviateAuthClient;

public class App
{
public static void main( String[] args ) throws Exception
{

String scheme = "https";
String host = System.getenv("WEAVIATE_HOSTNAME");
String apiKey = System.getenv("WEAVIATE_API_KEY");
String cohereKey = System.getenv("COHERE_API_KEY");

Map<String, String> headers = new HashMap<String, String>() { {
    put("X-Cohere-Api-Key", cohereKey);
} };

Config config = new Config(scheme, host, headers);
WeaviateClient client = WeaviateAuthClient.apiKey(config, apiKey);
}
}

API docs

# Set these environment variables
# WEAVIATE_URL      your Weaviate instance URL
# WEAVIATE_API_KEY  your Weaviate instance API key
# COHERE_API_KEY    your Cohere API key

curl https://${WEAVIATE_URL}/v1/meta \
-H 'Content-Type: application/json' \
-H "X-Cohere-Api-Key: ${COHERE_API_KEY}" \
-H "Authorization: Bearer ${WEAVIATE_API_KEY}" | jq

Environment variables

danger

Do not hard-code API keys or other credentials in your client code. Use environment variables or a similar secure coding technique instead.

Environment variables keep sensitive details out of your source code. Your application imports the information to runtime.

Set an environment variable.

In these examples, the environment variable names are in UPPER_CASE.

Bash/Zsh
Windows PowerShell
Windows Command Prompt

export WEAVIATE_URL="http://localhost:8080"
export WEAVIATE_API_KEY="sAmPleKEY8FwELJILn0YDRG9gjy4hReqfInz"

$Env:WEAVIATE_URL="http://localhost:8080"
$Env:WEAVIATE_API_KEY="sAmPleKEY8FwELJILn0YDRG9gjy4hReqfInz"

set WEAVIATE_URL=http://localhost:8080
set WEAVIATE_API_KEY=sAmPleKEY8FwELJILn0YDRG9gjy4hReqfInz

Import an environment variable.

Python
JS/TS
Go
Java

weaviate_url = os.getenv("WEAVIATE_URL")
weaviate_key = os.getenv("WEAVIATE_API_KEY")

const weaviateUrl = process.env.WEAVIATE_URL;
const weaviateKey = process.env.WEAVIATE_API_KEY;

weaviateUrl := os.Getenv("WEAVIATE_URL")
weaviateKey := os.Getenv("WEAVIATE_API_KEY")

String weaviateUrl = System.getenv("WEAVIATE_URL");
String weaviateKey = System.getenv("WEAVIATE_API_KEY");

gRPC timeouts

The Python client v4 and TypeScript client v3 use gRPC. The gRPC protocol is sensitive to network delay. If you encounter connection timeouts, adjust the timeout values for initialization, queries, and insertions.

Python Client v4
JS/TS Client v3

import weaviate, os
from weaviate.classes.init import Auth
from weaviate.classes.init import AdditionalConfig, Timeout

# Best practice: store your credentials in environment variables
weaviate_url = os.environ["WEAVIATE_URL"]
weaviate_api_key = os.environ["WEAVIATE_API_KEY"]

# Connect to a WCD instance
client = weaviate.connect_to_weaviate_cloud(
    cluster_url=weaviate_url,
    auth_credentials=Auth.api_key(weaviate_api_key),
    # skip_init_checks=True,
    additional_config=AdditionalConfig(
        timeout=Timeout(init=30, query=60, insert=120)  # Values in seconds
    )
)

print(client.is_ready())

API docs

// Set these environment variables
// WEAVIATE_URL       your Weaviate instance URL
// WEAVIATE_API_KEY   your Weaviate instance API key

import weaviate, { WeaviateClient } from 'weaviate-client';

const weaviateURL = process.env.WEAVIATE_URL as string
const weaviateKey = process.env.WEAVIATE_API_KEY as string

const client: WeaviateClient = await weaviate.connectToWeaviateCloud(weaviateURL, {
  authCredentials: new weaviate.ApiKey(weaviateKey),
    timeout: { init: 30, query: 60, insert: 120 } // Values in seconds
  }
)

console.log(client)

API docs

Questions and feedback

If you have any questions or feedback, let us know in the user forum.

Retrieve your API key and REST endpoint​

Connection example​

Third party API keys​

Environment variables​

gRPC timeouts​

Questions and feedback​

Retrieve your API key and REST endpoint

Connection example

Third party API keys

Environment variables

gRPC timeouts

Questions and feedback