Imported from Zzulin/unity-project01 (URP1/Plugins/Unity-Skills/SkillsForUnity/unity-skills~/skills/material/SKILL.md). Install upstream with npx skills add Zzulin/unity-project01 --skill material. Copyright stays with the author.

Unity Material Skills

BATCH-FIRST: Use *_batch skills when operating on 2+ objects/materials.

Operating Mode

Approval (default): all mutating skills (material_create, material_create_batch, material_assign, material_assign_batch, material_duplicate, material_set_color / _emission / _texture / _float / _int / _vector / _keyword / _render_queue / _shader / _texture_offset / _texture_scale / _gi_flags, and the *_batch variants) need user grant; grant triggers a single server-side execution that returns the result.
Auto / Bypass: those skills execute directly.
Query skills (material_get_properties, material_get_keywords) are SkillMode.SemiAuto — they run in all three modes without grant.
This module contains no Delete / PlayMode / Reload / high-risk skills (no NeverInSemi); to delete a material asset, call the asset module.

Guardrails

DO NOT (common hallucinations):

material_set_metallic / material_set_smoothness do not exist → use material_set_float with propertyName="_Metallic" or "_Glossiness" (Standard) / "_Smoothness" (URP)
material_set_color r/g/b/a range is 0–1, not 0–255
material_set_property does not exist → use the specific setter: material_set_float, material_set_int, material_set_vector, material_set_color
material_get_color does not exist → use material_get_properties (returns all properties including colors)

Routing:

For shader changes → material_set_shader (this module)
For texture tiling → material_set_texture_scale / material_set_texture_offset
Pipeline-specific property names differ: check Render Pipeline Compatibility table in this doc

Object Targeting: Most single-object skills accept name (GameObject name) or path. Behaviour of path:

In material_set_* / material_get_* (color/emission/texture/float/int/vector/keyword/shader/render_queue/gi_flags/properties), path may be either a GameObject hierarchy path or a material asset path like Assets/Materials/X.mat — the skill auto-detects (paths starting with Assets/ or ending with .mat are treated as material assets).

In material_assign, path is a GameObject hierarchy path only; the material to assign goes in the separate materialPath parameter.

Skills Overview

Single Object	Batch Version	Use Batch When
`material_create`	`material_create_batch`	Creating 2+ materials
`material_assign`	`material_assign_batch`	Assigning to 2+ objects
`material_set_color`	`material_set_colors_batch`	Setting colors on 2+ objects
`material_set_emission`	`material_set_emission_batch`	Setting emission on 2+ objects

No batch needed:

material_set_texture - Set texture
material_set_texture_offset/scale - Texture tiling
material_set_float/int/vector - Set properties
material_set_keyword - Enable/disable shader keywords
material_set_render_queue - Set render queue
material_set_shader - Change shader
material_get_properties/keywords - Query properties
material_duplicate - Duplicate material

Skills

material_create

Create a new material (auto-detects render pipeline).

Parameter	Type	Required	Default	Description
`name`	string	Yes	-	Material name
`shaderName`	string	No	auto-detect	Shader (auto-detects URP/HDRP/Standard)
`savePath`	string	No	null	Save path (folder or full path)

material_create_batch

Create multiple materials.

Parameter	Type	Required	Default	Description
`items`	json string	Yes	-	JSON array of per-item objects (see example below)

Returns: {success, totalItems, successCount, failCount, results: [{success, name, path}]}

unity_skills.call_skill("material_create_batch", items=[
    {"name": "Red", "savePath": "Assets/Materials"},
    {"name": "Blue", "savePath": "Assets/Materials"},
    {"name": "Green", "savePath": "Assets/Materials"}
])

material_assign

Assign material to object's renderer.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`instanceId`	int	No*	Instance ID
`path`	string	No*	GameObject hierarchy path
`materialPath`	string	Yes	Material asset to assign (e.g. `Assets/Materials/X.mat`)

material_assign_batch

Assign materials to multiple objects.

Parameter	Type	Required	Default	Description
`items`	json string	Yes	-	JSON array of per-item objects (see example below)

Returns: {success, totalItems, successCount, failCount, results: [{success, name, materialPath}]}

unity_skills.call_skill("material_assign_batch", items=[
    {"name": "Cube1", "materialPath": "Assets/Materials/Red.mat"},
    {"name": "Cube2", "materialPath": "Assets/Materials/Blue.mat"}
])

material_set_color

Set material color with optional HDR intensity.

Parameter	Type	Required	Default	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`r`, `g`, `b`	float	No	1	Color (0-1)
`a`	float	No	1	Alpha
`propertyName`	string	No	auto-detect	Color property
`intensity`	float	No	1.0	HDR intensity (>1 for bloom)

material_set_colors_batch

Set colors on multiple objects. Each item accepts: identifier (name/instanceId/path) + r, g, b, a, optional per-item propertyName.

Parameter	Type	Required	Default	Description
`items`	json string	Yes	-	JSON array of `{name
`propertyName`	string	No	auto-detect	Default color property applied to all items unless overridden

Returns: {success, totalItems, successCount, failCount, results: [{success, name}]}

unity_skills.call_skill("material_set_colors_batch", items=[
    {"name": "Cube1", "r": 1, "g": 0, "b": 0},
    {"name": "Cube2", "r": 0, "g": 1, "b": 0},
    {"name": "Cube3", "r": 0, "g": 0, "b": 1}
])

material_set_emission

Set emission color with auto-enable keyword.

Parameter	Type	Required	Default	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`r`, `g`, `b`	float	No	1	Emission color (0-1)
`intensity`	float	No	1.0	HDR intensity (>1 for bloom)
`enableEmission`	bool	No	true	Auto-enable _EMISSION keyword

material_set_emission_batch

Set emission on multiple objects.

Parameter	Type	Required	Default	Description
`items`	json string	Yes	-	JSON array of per-item objects (see example below)

Returns: {success, totalItems, successCount, failCount, results: [{success, name}]}

unity_skills.call_skill("material_set_emission_batch", items=[
    {"name": "Neon1", "r": 1, "g": 0, "b": 1, "intensity": 5.0},
    {"name": "Neon2", "r": 0, "g": 1, "b": 1, "intensity": 5.0}
])

material_set_texture

Set material texture.

Parameter	Type	Required	Default	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`texturePath`	string	Yes	-	Texture asset path
`propertyName`	string	No	auto-detect	Texture property

material_set_float

Set a float property on a material.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`propertyName`	string	Yes	Property name
`value`	float	Yes	Value

material_set_int

Set an integer property on a material.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`propertyName`	string	Yes	Property name
`value`	int	Yes	Value

material_set_keyword

Enable/disable shader keywords.

Parameter	Type	Required	Default	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`keyword`	string	Yes	-	Keyword name
`enable`	bool	No	true	Enable or disable

Common Keywords: _EMISSION, _NORMALMAP, _METALLICGLOSSMAP, _ALPHATEST_ON, _ALPHABLEND_ON

material_get_properties

Get all material properties.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path

Returns: {success, target, shader, renderQueue, keywords, giFlags, properties: {colors, floats, vectors, textures, integers}}

material_get_keywords

Get all enabled shader keywords on a material.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path

material_duplicate

Duplicate a material asset.

Parameter	Type	Required	Description
`sourcePath`	string	Yes	Source material path
`newName`	string	Yes	Name for the duplicated material
`savePath`	string	No	Optional folder/path override for the duplicated material

material_set_shader

Change the shader of a material.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`shaderName`	string	Yes	Shader name

material_set_vector

Set a Vector4 property on a material.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`propertyName`	string	Yes	Property name
`x`, `y`, `z`, `w`	float	Yes	Vector components

material_set_texture_offset

Set texture offset (tiling position).

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`propertyName`	string	No	Texture property name
`x`, `y`	float	Yes	Offset values

material_set_texture_scale

Set texture scale (tiling).

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`propertyName`	string	No	Texture property name
`x`, `y`	float	Yes	Scale values

material_set_render_queue

Set material render queue.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	Material asset path
`renderQueue`	int	Yes	Render queue value

material_set_gi_flags

Set material global illumination flags.

Parameter	Type	Required	Description
`name`	string	No*	GameObject name
`path`	string	No*	GameObject hierarchy path or material asset path
`flags`	string	Yes	GI flags: `None` / `RealtimeEmissive` / `BakedEmissive` / `EmissiveIsBlack` / `AnyEmissive` (default `RealtimeEmissive` if omitted in code; required here)

Example: Efficient Material Setup

import unity_skills

# BAD: 6 API calls
unity_skills.call_skill("material_create", name="Mat1", savePath="Assets/Materials")
unity_skills.call_skill("material_create", name="Mat2", savePath="Assets/Materials")
unity_skills.call_skill("material_set_color", path="Assets/Materials/Mat1.mat", r=1, g=0, b=0)
unity_skills.call_skill("material_set_color", path="Assets/Materials/Mat2.mat", r=0, g=0, b=1)
unity_skills.call_skill("material_assign", name="Cube1", materialPath="Assets/Materials/Mat1.mat")
unity_skills.call_skill("material_assign", name="Cube2", materialPath="Assets/Materials/Mat2.mat")

# GOOD: 3 API calls
unity_skills.call_skill("material_create_batch", items=[
    {"name": "Mat1", "savePath": "Assets/Materials"},
    {"name": "Mat2", "savePath": "Assets/Materials"}
])
unity_skills.call_skill("material_set_colors_batch", items=[
    {"path": "Assets/Materials/Mat1.mat", "r": 1, "g": 0, "b": 0},
    {"path": "Assets/Materials/Mat2.mat", "r": 0, "g": 0, "b": 1}
])
unity_skills.call_skill("material_assign_batch", items=[
    {"name": "Cube1", "materialPath": "Assets/Materials/Mat1.mat"},
    {"name": "Cube2", "materialPath": "Assets/Materials/Mat2.mat"}
])

Render Pipeline Compatibility

Skills auto-detect and adapt to your render pipeline:

Pipeline	Default Shader	Color Property	Texture Property
Built-in	Standard	`_Color`	`_MainTex`
URP	Universal Render Pipeline/Lit	`_BaseColor`	`_BaseMap`
HDRP	HDRP/Lit	`_BaseColor`	`_BaseColorMap`

Best Practices

Save materials as assets for reuse
Use material instances (by name) for runtime changes
Use material assets (by path) for persistent changes
Check shader property names in Unity Inspector
URP/HDRP have different property names than Standard

Exact Signatures

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

unity-material

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