Unity PostProcess Skills

Modern URP and HDRP post-processing on SRP Volume profiles. Parameters come from the schema (GET /skills/schema?category=PostProcess&wire=v2); execution and dryRun rules: root SKILL.md. Volume container and profile management (volume_profile_create, volume_create, ...) belongs to the volume module.

When to use

• Setting up post-processing or tuning the look of a URP or HDRP scene
• Adding or adjusting an effect override on a VolumeProfile

Rules

• Call postprocess_list_effects before assuming an effect exists on the active pipeline.
• Inspect real parameter names with postprocess_get_effect (or volume_get_component) before using the generic postprocess_set_parameter; prefer the dedicated postprocess_set_* skills.
• URP and HDRP parameter surfaces are similar but not identical; do not reuse names across pipelines.
• Query skills are SemiAuto. The postprocess_add_effect, postprocess_set_* and postprocess_set_parameter writers are FullAuto: under Approval they need a grant.
• postprocess_remove_effect is a Delete operation: refused under Approval and Auto; only Bypass or an allowlist runs it.
• Without SRP Core installed, every skill returns { error: "Scriptable Render Pipeline Core package (com.unity.render-pipelines.core) is not installed..." }. That is a diagnostic answer, not a permission denial, and needs no grant.

Pitfalls

• This module is not for PPv2 (com.unity.postprocessing).
• Volume container and profile CRUD belong to the volume module, not here.