Urp

---
name: unity-urp
description: "Universal Render Pipeline (URP) asset & renderer feature management. Use when users want to inspect or modify the active URP asset (HDR, MSAA, render scale, shadows, camera depth/opaque texture), list renderer data assets, list / add / remove / toggle built-in renderer features such as SSAO, RenderObjects, Decal, FullScreenPass, ScreenSpaceReflection, SurfaceCacheGI. Triggers (EN): URP, Universal Render Pipeline, URP asset, URPAsset, UniversalRenderPipelineAsset, renderer data, ScriptableRendererData, renderer feature, ScriptableRendererFeature, SSAO, ScreenSpaceAmbientOcclusion, RenderObjects, FullScreenPassRendererFeature, ScreenSpaceReflection, render scale, MSAA, HDR. Triggers (ZH): URP, 通用渲染管线, URP 资源, URP 设置, 渲染器, 渲染器数据, 渲染器特性, 屏幕空间环境光遮蔽, 屏幕空间反射, 全屏 Pass, 渲染缩放."
---

# URP Skills

URP-specific asset and renderer feature management for Unity 2022.3+ (URP 14 and Unity 6 / URP 17).

## Operating Mode

- Query skills (`urp_get_info`, `urp_list_renderers`, `urp_list_renderer_features`) are `SkillMode.SemiAuto` — they run in all three modes without grant.
- Mutating skills (`urp_set_asset_settings`, `urp_add_renderer_feature`, `urp_set_renderer_feature_active`) are `SkillMode.FullAuto` — under **Approval** they need user grant (grant triggers one server-side execute returning the result); under **Auto** / **Bypass** they execute directly.
- `urp_remove_renderer_feature` carries `SkillOperation.Delete` and is **auto-forbidden** in Approval / Auto modes (NeverInSemi). Only **Bypass** or the user-managed **Allowlist** can run it.

## URP Package Stub

This module is compiled against `com.unity.render-pipelines.universal` (`URP`). When URP is not installed, **every** skill returns a stub `{ error: "Universal Render Pipeline package … is not installed." }` (`RenderPipelineSkillsCommon.NoURP()`). The stub is a diagnostic payload, not a permission denial — it does **not** require grant and is **not** treated as NeverInSemi. Call `project_get_render_pipeline` first when you see this error.

## Guardrails

**DO NOT**:
- Use this module for ShaderGraph
- Assume arbitrary custom renderer features are safe to instantiate
- Assume Unity 2022 and Unity 6 expose the same built-in renderer features

**Runtime-first rules**:
- Always call `urp_get_info` before `urp_add_renderer_feature`
- Only use names returned by `urp_get_info.creatableRendererFeatures`
- Do not hardcode `RenderObjects`, `FullScreenPassRendererFeature`, `ScreenSpaceReflectionRendererFeature`, etc. as universally available
- Use `urp_list_renderer_features` to resolve existing feature names/indexes before calling `urp_set_renderer_feature_active` or `urp_remove_renderer_feature`

**Validated behavior**:
- Unity 2022.3 + URP 14 real environment may expose a smaller creatable set, e.g. `DecalRendererFeature` and `ScreenSpaceAmbientOcclusion`
- Unity 6 + URP 17 real environment may expose a larger set

## Skills

### `urp_get_info`
Inspect the active URP asset and renderer layout.

### `urp_set_asset_settings`
Modify key URP asset settings like HDR, MSAA, render scale, shadows, and camera textures.

### `urp_list_renderers`
List renderer data assets on the active URP asset.

### `urp_list_renderer_features`
List renderer features on a specific renderer.

### `urp_add_renderer_feature`
Add a safe built-in renderer feature to a renderer.

### `urp_remove_renderer_feature`
Remove a renderer feature from a renderer.

### `urp_set_renderer_feature_active`
Enable or disable a renderer feature.

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## Exact Signatures

Exact names, parameters, defaults, and returns are defined by `GET /skills/schema` or `unity_skills.get_skill_schema()`, not by this file.