README

An AI chat over your own database. The engine runs an Anthropic Managed Agents conversation whose tools are safe, read-only SQL over the anonymized views of adt/doctrine-anonymization - so the model can analyze your data without ever seeing personal details.

composer require adt/ai-chat

What it is (and is not)

The package is the conversation engine: session handling, the polling loop, tool execution, agent provisioning, prompt building and output redaction. It ships no HTTP client, no queue and no frontend - those live in your project behind two small interfaces, because every project already has its own.

ManagedAgentsClient (you implement)  ──►  AgentTurnRunner  ──►  TurnResult
                                            │
ToolHandler (SQL / charts / export) ◄──────┘
        │
ReadOnlyQueryExecutor (adt/doctrine-anonymization, read-only account, anon schema)

Complete working example

The examples/ directory is a full reference integration you can copy into a project and adjust:

File	Shows
`GuzzleManagedAgentsClient.php`	the transport - raw HTTP with the beta header, over Guzzle
`Entity/Conversation.php`, `Entity/Agent.php`	entities built from the package traits, ownership on your side
`Entity/Message.php`	a minimal transcript entity (the package has no message contract on purpose)
`ChatService.php`	the coordinator - web request stores + dispatches, worker runs the turn, redacts and persists
`QueueMessageDispatcher.php`	the background hand-off (here adt/background-queue) incl. the consumer wiring
`config.neon`	complete DI registration of everything above
`ui/ChatControl.php` + `.latte`	the frontend as a Nette component: AJAX signals, polling, CSV download endpoint, tool-data whitelisting
`ui/ChatPresenter.php` + `.latte`	a page hosting the control incl. the CDN includes (Chart.js, marked, DOMPurify)
`ui/assets/aiChatControl.js`, `ui/assets/ai-chat.css`	the complete browser side: conversations, markdown rendering, charts, tables, context gauge, CSV buttons

The examples are not autoloaded by the package - they are a starting point, not an API.

Wiring

1. Implement the transport

ManagedAgentsClient maps 1:1 to the Managed Agents REST endpoints (beta). Use your existing HTTP client with its logging and error handling:

class MyAiClient implements ADT\AiChat\Client\ManagedAgentsClient { ... }

2. Implement the dispatcher

A turn takes minutes, so it must run in a worker. MessageDispatcher::dispatch() hands the message to your queue; the worker then runs the turn:

class QueueMessageDispatcher implements ADT\AiChat\Dispatch\MessageDispatcher
{
	public function dispatch(int|string $conversationId, string $userMessage): void
	{
		$this->queue->publish('aiChatProcessMessage', compact('conversationId', 'userMessage'));
	}
}

3. Map the entities

Conversation and agent mapping are your Doctrine entities implementing the package interfaces; the traits carry the default mapping, your side adds the id and the owner relation:

#[ORM\Entity]
class AiChatConversation implements ADT\AiChat\Entity\ConversationInterface
{
	use ADT\AiChat\Entity\ConversationTrait;

	#[ORM\ManyToOne(targetEntity: User::class)]
	public User $user;    // ownership stays on your side
	...
}

#[ORM\Entity]
class AiChatAgent implements ADT\AiChat\Entity\AgentInterface
{
	use ADT\AiChat\Entity\AgentTrait;
	...
}

4. Provision the agent

Run right after regenerating the anonymized views (same deploy step). Idempotent: an existing agent is updated in place (same id, new version) with the current system prompt and tool definitions:

[$mapping, $created] = $provisioner->ensureProvisioned($schemaName);

5. Run a turn (in the worker)

$runner = new AgentTurnRunner($client, $toolHandler, $provisioner->resolver($schemaName));

$result = $runner->run($conversation, $userMessage, function (?string $sessionId) use ($em): void {
	$em->flush();    // persist the session id as soon as it changes
});

$text = $piiFilter->filter($result->text, $piiValueCollector->collect($result->toolData));
// store $text + $result->toolData + $result->tokensInput/Output as a message

The runner handles: ignoring pre-existing session events, executing custom tools and sending their results back, token accounting (window usage = last request incl. cache counters; output summed), a retry with a fresh session when a stale one refuses the message, and hard stops (maxPolls, maxToolCalls) that surface as TurnTimeoutException - which is never retried, so a message cannot be duplicated.

Attachments

Users can attach files (images, PDFs, text/CSV) to a message. Upload each file to the Anthropic Files API via ManagedAgentsClient::uploadFile() in the web request, pass only the returned file ids through your queue, and hand them to the runner as Attachment objects - it sends them as image/document content blocks of the same user.message, so the model reads the files directly from its context:

$file = $client->uploadFile('export.csv', $contents, 'text/plain');

$result = $runner->run($conversation, $userMessage, $persist, [
    new Attachment($file['id'], 'text/plain', 'export.csv'),
]);

Media types follow the content-block rules: image/jpeg|png|gif|webp become image blocks, application/pdf and text/plain document blocks. Upload other text formats (CSV, Markdown, logs) as text/plain - the filename keeps the extension.

Tools

ToolHandler is the default ToolExecutor:

Tool	Purpose
`get_database_schema`	tables of the anon schema; columns incl. `#[Description]` texts
`execute_sql`	read-only SELECT, row-capped, over the read-only account
`render_chart` / `render_table`	displayable results for your frontend
`export_csv`	validates the SQL and returns a download token; your endpoint streams the rows later via `ReadOnlyQueryExecutor::streamQuery()` (never through the model)

Different tool set? Implement ToolExecutor yourself.

Output redaction

PiiResponseFilter redacts e-mails, phone numbers, bank accounts and secrets from the final reply by pattern, and - via PiiValueCollector - the literal values that appeared in personal-data columns of SQL results (names, birth dates), which no regex can recognise. Replacement labels and the phone prefix are configurable for localized chats.

System prompt

SystemPromptBuilder renders a template with a {{tableList}} placeholder; only table names go into the prompt (columns are fetched on demand by the schema tool), which keeps every inference cheap and clear of the hard system length limit. A generic default template ships in src/resources/system-prompt.md - copy it and tune the wording to your domain.

Tests

composer install
vendor/bin/codecept run unit

The suite drives the full turn loop against a scriptable fake of the Managed Agents API (tool round-trips, history isolation, timeouts, stale-session retry, token accounting) plus the tool handler, prompt builder and redaction - no network and no database.

adt / ai-chat

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