Telemetry

Prism automatically tracks your AI requests and sends telemetry data to observability platforms. Get insights into request performance, token usage, errors, and more.

What Gets Tracked

• Request duration and token usage
• Provider and model information
• HTTP calls to AI APIs
• Tool/function calls and execution
• Error details and exceptions

Quick Start

Enable telemetry in your .env file:

PRISM_TELEMETRY_ENABLED=true
PRISM_TELEMETRY_DRIVER=log

Configure in config/prism.php:

'telemetry' => [
    'enabled' => env('PRISM_TELEMETRY_ENABLED', false),
    'driver' => env('PRISM_TELEMETRY_DRIVER', 'log'),
    'drivers' => [
        'log' => [
            'channel' => env('PRISM_TELEMETRY_LOG_CHANNEL', 'single'),
        ],
    ],
],

Log Driver

Sends telemetry to Laravel's logging system:

PRISM_TELEMETRY_DRIVER=log
PRISM_TELEMETRY_LOG_CHANNEL=single

Example telemetry output:

{
  "message": "Telemetry span started",
  "context": {
    "span_id": "abc123def456",
    "span_name": "prism.text.request",
    "attributes": {
      "provider": "openai",
      "model": "gpt-4",
      "prompt_tokens": 15
    }
  }
}

Custom Drivers

Create custom drivers for OpenTelemetry, DataDog, New Relic, or other platforms.

Interface

interface TelemetryDriver
{
    public function startSpan(string $name, array $attributes = [], ?string $parentId = null): string;
    public function endSpan(string $contextId, array $attributes = []): void;
    public function recordException(string $contextId, \Throwable $exception): void;
}

Registration

Register your driver in a service provider:

namespace App\Providers;

class AppServiceProvider extends ServiceProvider
{
    public function boot(): void
    {
        $this->app['telemetry-manager']->extend('opentelemetry', function ($app) {
            return new TelemetryDriver;
        });
    }
}

Then configure it:

// config/prism.php
'telemetry' => [
    'driver' => 'opentelemetry',
    'drivers' => [
        'opentelemetry' => [
            'service_name' => env('OTEL_SERVICE_NAME', 'my-app'),
        ],
    ],
],