Help the user set up, configure, and debug post-processing effects using URP's Volume framework.

Goal: The user should have a working visual result with zero console errors after setup.

0. Prerequisite: an Editor you can run C# in

Volume profiles, VolumeParameter.overrideState, and the camera's post-processing flags are Editor/runtime object state — the checks and edits below all run C# inside a live Editor.

The unity-cli skill owns getting you there — installing the CLI, confirming a connected Editor, adding the project's com.unity.pipeline package, telling a genuinely absent Editor apart from one stuck in Safe Mode, and discovering the Editor's command catalog. Follow it first; don't re-derive any of it here. You need eval in particular, not just a reachable Editor: its presence depends on the Pipeline package version, not on the CLI. If it's missing, say so and stop.

urp-postprocessing

0. Prerequisite: an Editor you can run C# in