Php - How to use the Stablediffusion API in 4 easy steps

Step 1 – Generate a bearer token

Generate a bearer token from your new application.

Step 2 – Start a new thread with Stablediffusion

You may select an ai_version_code and an engine. For example : stablediffusion_text2img and stable-diffusion-xl-1024-v0-9.

Send an http POST request to create a new thread.

<?php
$bearer = '<<your_token_here>>';

// CREATE THREAD
// -------------
$url = "https://app.ai-client.com/api/v1/threads";

$headers = [
  'Accept: application/json',
  'Authorization: Bearer '.$bearer
];

$options = [
    'ai_version_code' => 'stablediffusion_text2img'
];

$curl = curl_init();
curl_setopt_array($curl, array(
  CURLOPT_URL => $url,
  CURLOPT_CUSTOMREQUEST => 'POST',
  CURLOPT_POSTFIELDS => $options,
  CURLOPT_HTTPHEADER => $headers,
  CURLOPT_RETURNTRANSFER => true
));

$response = curl_exec($curl);
$thread = json_decode($response)->data;
curl_close($curl);

print_r($thread);

This will return :

stdClass Object
(
    [guid] => bf1e2937-18ea-48a1-8fa3-219e5aa2bd39
    [ai_code] => stablediffusion
    [ai_version_code] => stablediffusion_text2img
    [title] => New thread with Stable Diffusion Image Generation
    [created_at] => 2023-07-13T19:51:33.000000Z
    [updated_at] => 2023-07-13T19:51:33.000000Z
)

Step 3 – Create a thread entry to send a message

You may use the thread object to create a new entry with a POST request.

$url = "https://app.ai-client.com/api/v1/threads/" . $thread->guid . "/entry";

$headers = [
  'Accept: application/json',
  'Authorization: Bearer '.$bearer
];

$options = [
    'type' => 'request',
    'engine' => 'stable-diffusion-xl-1024-v0-9',
    'resolution' => '1024x1024',
    // positive prompt: what we want to see
    'prompts[0][text]' => "Delorean hacking time",
    'prompts[0][weight]' => 1,
    // negative prompt: what we want to avoid
    'prompts[1][text]' => "Clock",
    'prompts[1][weight]' => -1,
    'images' => 2,
    'steps' => 45,
    'style' => "neon-punk"
];

$curl = curl_init();
curl_setopt_array($curl, array(
  CURLOPT_URL => $url,
  CURLOPT_CUSTOMREQUEST => 'POST',
  CURLOPT_POSTFIELDS => $options,
  CURLOPT_HTTPHEADER => $headers,
  CURLOPT_RETURNTRANSFER => true
));

$response = curl_exec($curl);
$threadEntry = json_decode($response)->data;
curl_close($curl);

print_r($threadEntry);

This will return :

stdClass Object
(
    [guid] => 2947cf15-d7a7-4e12-ad73-1384d3b10eb8
    [thread_guid] => bf1e2937-18ea-48a1-8fa3-219e5aa2bd39
    [type] => request
    [error] =>
    [content] => stdClass Object
        (
            [prompts] => Array
                (
                    [0] => stdClass Object
                        (
                            [text] => Delorean hacking time
                            [weight] => 1
                        )

                    [1] => stdClass Object
                        (
                            [text] => Clock
                            [weight] => -1
                        )

                )

            [engine] => stable-diffusion-xl-1024-v0-9
            [style] => neon-punk
            [images] => 2
            [steps] => 45
            [resolution] => 1024x1024
        )

    [waiting_response] => 1
    [credits] => 0
    [created_at] => 2023-07-13T19:51:33.000000Z
)

Step 4 – Wait for a response from Stablediffusion

You must now wait for the AI’s response. The “waiting_response” property of your thread entry informs you of Stablediffusion’s response.

You may use the thread object to get all the thread entries. Send a GET request. You will see your thread entry of type “request” and the Stablediffusion thread entry of type “response“.

$url = "https://app.ai-client.com/api/v1/threads/" . $thread->guid . "/entries";

$headers = [
  'Accept: application/json',
  'Authorization: Bearer '.$bearer
];

$curl = curl_init();
curl_setopt_array($curl, array(
  CURLOPT_URL => $url,
  CURLOPT_CUSTOMREQUEST => 'GET',
  CURLOPT_HTTPHEADER => $headers,
  CURLOPT_RETURNTRANSFER => true
));

$response = curl_exec($curl);
$threadEntries = json_decode($response)->data;
curl_close($curl);

print_r($threadEntries);

This will return :