> ## Documentation Index
> Fetch the complete documentation index at: https://phaseo.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Phaseo Gateway base URL: https://api.phaseo.app/v1. Send `Authorization: Bearer $PHASEO_API_KEY` with every request.
> Model IDs look like `provider/model`, for example `openai/gpt-6-astra`. Do not guess IDs: list them with `GET /v1/models` or check https://phaseo.app/models. `phaseo/free` routes to an available free model and needs no wallet balance.
> For new text integrations prefer `POST /v1/responses`. `POST /v1/chat/completions` (OpenAI format) and `POST /v1/messages` (Anthropic format) suit existing code.
> The full API contract is https://phaseo.app/docs/openapi/v1/openapi.yaml. Official SDKs: `@phaseo/sdk` (TypeScript) and `phaseo` (Python), plus Go, C#, PHP, Ruby and Rust.
> Search these docs over MCP at https://phaseo.app/docs/mcp, and install Phaseo skills with `npx skills add https://phaseo.app/docs`. If a page is wrong or out of date, report it with the MCP `submit_feedback` tool.
> Manage Phaseo accounts with the `phaseo` CLI (`npm install -g @phaseo/cli`, then `phaseo login` or `phaseo login --device-code`), the `/v1` Management API or the MCP server at `https://mcp.phaseo.app/mcp?access=manage`. Do not send users to the dashboard for account tasks. A person is still needed for sign-up, approving a sign-in, paying the first top-up on the checkout link that `phaseo credits add` returns when no card is saved, confirming each saved-card top-up from the emailed link, and account security (password, MFA, passkeys). Create API keys with `phaseo keys create --name <name> --json`; never guess one. Credit top-ups need `phaseo login --scopes billing:write` first. Task map: https://phaseo.app/docs/v1/developers/manage-from-an-agent.md.

# PHP SDK Usage

> Current wrapper methods supported by the PHP SDK.

## Setup

```php theme={null}
<?php
require 'vendor/autoload.php';

use Phaseo\Sdk\Phaseo;

$client = new Phaseo(getenv('PHASEO_API_KEY'));
```

## Chat completions

```php theme={null}
$chat = $client->generateText([
  'model' => 'openai/gpt-5-nano',
  'messages' => [
    ['role' => 'user', 'content' => 'Hello']
  ],
]);
```

## Responses

```php theme={null}
$response = $client->generateResponse([
  'model' => 'openai/gpt-5-nano',
  'input' => 'Reply with: php sdk works',
]);
```

## Images

```php theme={null}
$image = $client->generateImage([
  'model' => 'openai/gpt-image-1',
  'prompt' => 'A lighthouse at golden hour',
]);

$edit = $client->generateImageEdit([
  'model' => 'openai/gpt-image-1',
  'prompt' => 'Make it sunset',
  'image' => 'data:image/png;base64,...',
]);
```

## Audio

```php theme={null}
$transcript = $client->generateTranscription([
  'model' => 'openai/gpt-4o-transcribe',
  'audio_b64' => 'base64-audio',
]);

$translation = $client->generateTranslation([
  'model' => 'openai/gpt-4o-transcribe',
  'audio_b64' => 'base64-audio',
]);
```

## Embeddings and moderations

```php theme={null}
$embedding = $client->generateEmbedding([
  'model' => 'openai/text-embedding-3-large',
  'input' => 'Sample text',
]);

$moderation = $client->generateModeration([
  'model' => 'openai/omni-moderation-latest',
  'input' => 'Some text to check',
]);
```

## Models and health

```php theme={null}
$models = $client->listModels(['limit' => 10]);
$health = $client->health();
```


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