DEX Open-source monitoring & observability for CodeIgniter 4

Open-source monitoring
for CodeIgniter 4

Follow every request. Find what broke.

DEX helps you trace requests, spot failures, and understand performance in your CodeIgniter 4 applications. Inspect slow queries, errors, spans, and breadcrumbs — all from a clean, self-hosted dashboard built for developers.

Get Started Star on GitHub

Open Source Composer Install GitHub Packagist CI4 Native

Overview May 12 — May 18

Requests

12,842 +18.2%

Errors

156 +6.4%

Slow Queries

231 +9.1%

Avg Response

152ms -12.5%

Request Timeline

Top Errors

Exception 64

Error 46

TypeError 24

Other 22

Recent Requests

GET	/dashboard	200	124 ms
POST	/api/users	201	236 ms
GET	/products/42	500	812 ms

Open source

MIT licensed

Composer package

Install with one command

Self-hosted

You own your data

CI4 native

Built for CodeIgniter 4

Easy install

Up and running in minutes

Features

Everything you need to debug
your CI4 app in production.

DEX captures the full picture of your application's runtime — from incoming requests through database queries, exception traces, and rendered responses.

Request tracing

Follow each request from start to finish with detailed performance metrics, timing breakdowns, and contextual metadata.

Exception monitoring

Capture and inspect exceptions with rich context — stack traces, request payload, and exact code location.

Slow query insights

Identify N+1 issues and slow queries with execution time and query bindings, so you can optimize where it matters.

Spans & breadcrumbs

Visualize spans and breadcrumbs to understand exactly what happened — and when — across your request lifecycle.

Self-hosted by default

Keep your data private. Deploy DEX on your own infrastructure — no third-party servers, no data leaves your network.

Fast CI4 setup

A CI4-native service provider with sensible defaults and easy configuration — no boilerplate, no friction.

Quick Start

Three commands to start tracing.

1 Install via Composer

$ composer require dex/dex

2 Publish & configure

$ php spark dex:install

3 Open the dashboard

→ http://your-app.test/dex

View full documentation

How it works

From install to insight in three steps.

DEX hooks into CodeIgniter's request lifecycle automatically — no manual instrumentation required.

Install

Install DEX and configure with sensible defaults in just a few minutes.

Capture

DEX automatically captures requests, queries, errors, spans, and breadcrumbs.

Debug

Open the dashboard to explore, filter, and debug what matters most.

A peek inside

A dashboard built for developers,
not for ops dashboards.

Quick to scan. Easy to filter. Designed for the moments when something just broke and you need to know why, fast.

your-app.test/dex/requests