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

# Support reply with sources

## Overview

A fictional SaaS support workflow: index a policy corpus, select an approved
knowledge set, retrieve bounded evidence, and draft a typed reply for review.
The keyless default forces wrong-policy retrieval, checks context limits, skips
generation when evidence is missing, and rejects invented source labels.

Run from the repository root:

```sh theme={null}
php examples/B08_Retrieval/SupportReplyWithSources/run.php
php examples/B08_Retrieval/SupportReplyWithSources/run.php --live
```

`--live` uses OpenAI embeddings and generation on the same corpus. It requires
configured credentials. Fixture vectors and responses prove mechanics only;
the live run checks provider behavior separately. Neither mode sends a reply
or issues a refund. See the adjacent README for checks and observed output.

## Example

```php theme={null}
<?php
require 'examples/boot.php';

$loader->addPsr4('Examples\\Retrieval\\SupportReplyWithSources\\', __DIR__ . '/src/');
require __DIR__ . '/proof.php';

use Examples\Retrieval\SupportReplyWithSources\SupportReplyProof;

SupportReplyProof::run(in_array('--live', $argv ?? [], true));
?>
```