# Introducing symfony lsp:check: Symfony-Aware Diagnostics in Your CI

DevFeed: [Introducing symfony lsp:check: Symfony-Aware Diagnostics in Your CI](<https://devfeed.tech/articles/introducing-symfony-lsp-check-symfony-aware-diagnostics-in-your-ci-8577.md>)

Original publisher: [Read original article](<https://symfony.com/blog/introducing-symfony-lsp-check-symfony-aware-diagnostics-in-your-ci>)

Author: Fabien Potencier

Published: 2026-08-31T12:03:00Z

Content type: article

Language: en

Sources: [Symfony Blog](<https://devfeed.tech/sources/symfony-blog.md>)

Topics: [Symfony](<https://devfeed.tech/topics/symfony.md>), [ci](<https://devfeed.tech/topics/ci.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [PHP](<https://devfeed.tech/topics/php.md>), [Stimulus](<https://devfeed.tech/topics/stimulus.md>)

Tags: [ci](<https://devfeed.tech/tags/ci.md>), [cli](<https://devfeed.tech/tags/cli.md>), [command-line](<https://devfeed.tech/tags/command-line.md>), [github](<https://devfeed.tech/tags/github.md>), [php](<https://devfeed.tech/tags/php.md>), [symfony](<https://devfeed.tech/tags/symfony.md>), [validation](<https://devfeed.tech/tags/validation.md>)

## AI overview

The Symfony Language Tools introduce a headless Symfony-aware diagnostics command for CI. It detects framework-specific issues that type checkers and code review may miss, including unknown routes, missing templates and translation keys, invalid configuration, unknown services, and other integration errors.

## Source excerpt

A Symfony application is full of strings that mean something: route names, template paths, translation keys, service ids, bundle configuration keys. To PHP, they are strings like any others. Your CI pipeline verifies types with PHPStan or Psalm, style with...