OpenAI API error: "You didn't provide an API key. You need to provide your API key in an Authorization header using Bearer auth"

Question

I am creating a PHP script to access Open Ai's API, to ask a query and get a response.

I am getting the following error:

You didn't provide an API key. You need to provide your API key in an Authorization header using Bearer auth (i.e. Authorization: Bearer YOUR_KEY)

...but I thought I was providing the API key in the first variable?

Here is my code:

$api_key = "sk-U3B.........7MiL";

$query = "How are you?";

$url = "https://api.openai.com/v1/engines/davinci/jobs";

// Set up the API request headers
$headers = array(
    "Content-Type: application/json",
    "Authorization: Bearer " . $api_key
);

// Set up the API request body
$data = array(
    "prompt" => $query,
    "max_tokens" => 100,
    "temperature" => 0.5
);

// Use WordPress's built-in HTTP API to send the API request
$response = wp_remote_post( $url, array(
    'headers' => $headers,
    'body' => json_encode( $data )
) );

// Check if the API request was successful
if ( is_wp_error( $response ) ) {
    // If the API request failed, display an error message
    echo "Error communicating with OpenAI API: " . $response->get_error_message();
} else {
    // If the API request was successful, extract the response text
    $response_body = json_decode( $response['body'] );
    //$response_text = $response_body->choices[0]->text;
    var_dump($response_body);
    // Display the response text on the web page
    echo $response_body;

Not sure, but the examples in the user notes of wp_remote_post use the headers array differently (key=>value). See examples: developer.wordpress.org/reference/functions/wp_remote_post/… — Honk der Hase
– Honk der Hase, Commented Feb 9, 2023 at 17:07

Rok Benko · Accepted Answer · 2023-09-14 06:38:03Z

2

All Engines endpoints are deprecated.

Use the Completions API endpoint:

https://api.openai.com/v1/completions

Working example

If you run test.php the OpenAI API will return the following completion:

string(23) "

This is indeed a test"

test.php

<?php
    $ch = curl_init();

    $url = 'https://api.openai.com/v1/completions';

    $api_key = 'sk-xxxxxxxxxxxxxxxxxxxx';

    $post_fields = '{
        "model": "text-davinci-003",
        "prompt": "Say this is a test",
        "max_tokens": 7,
        "temperature": 0
    }';

    $header  = [
        'Content-Type: application/json',
        'Authorization: Bearer ' . $api_key
    ];

    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);

    $result = curl_exec($ch);
    if (curl_errno($ch)) {
        echo 'Error: ' . curl_error($ch);
    }
    curl_close($ch);

    $response = json_decode($result);
    var_dump($response->choices[0]->text);
?>

edited Sep 14, 2023 at 6:38

answered Feb 9, 2023 at 17:08

Rok Benko

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8 Comments

sw123456 Over a year ago

Thanks so much for your help. I changed the endpoint and updated $url variable, but unfortunately the issues is continuing. I definitely have not used up the credit though as I've only just begun trying to use the API. So you know what else I might be doing wrong?

Rok Benko Over a year ago

Does this help you?

sw123456 Over a year ago

Sadly not, I've tried to implement some changes explained in the link but not helped unfortunately. You don't be any chance have a sample script which will enable the simple asking a query and getting a response, in php? Thank you

Rok Benko Over a year ago

You're asking for a simple PHP example?

Rok Benko Over a year ago

Will edit my answer tomorrow. :)

|

Adrian Mole · Accepted Answer · 2023-09-27 10:39:26Z

0

$headers = array(
    "Content-Type"=> "application/json",
    "Authorization"=> "Bearer " . $api_key
);

edited Sep 27, 2023 at 10:39

Adrian Mole

52.1k193 gold badges61 silver badges101 bronze badges

answered Sep 27, 2023 at 5:11

user22642152

1

1 Comment

Community Over a year ago

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

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