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Generate a procedural texture

bb_generate_texture

Generate procedural textures in Blockbench from material presets or ordered pixel ops like noise, gradients, and borders, using a seed for repeatable results.

Instructions

Paint a new texture from a preset and/or an ordered list of ops. Deterministic for a given seed. Presets: wood, planks, stone, cobble, metal, dirt, grass, leaves, bricks, fabric, skin, gem, noise, gradient. Ops: fill, noise, cells, gradient, radial, rect, circle, ellipse, line, checker, stripes, border, vignette, scatter, pixel, pixels, text, adjust, replace, blend. Example: {preset:"wood"} or {ops:[{op:"fill",color:"#2b3a55"},{op:"noise",color:"#101820",color2:"#8fb8de",scale:2,octaves:4},{op:"vignette",strength:0.5}]}.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
opsNo
nameNo
seedNo
widthNo
heightNo
presetNoA named material preset; user ops run on top of it.
selectNo
include_data_urlNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv2.0.0

TDQS

B3.3/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full behavioral burden. It usefully discloses that output is deterministic for a given seed and that ops are an ordered list, but it does not explain side effects such as whether a new texture is added to the project, selected, or returned, nor does it cover permissions or reversibility.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with purpose, then determinism, presets, ops, and an example. The long preset and op lists consume space but are necessary reference material rather than fluff. The structure is dense but efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 8 parameters, no annotations, no output schema, and low schema description coverage, the description supplies the core procedural recipe syntax. However, it omits return behavior, side effects, and meanings for several parameters, leaving gaps an agent must infer before calling the tool reliably.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is only 13%, so the description must compensate, and it does so for the most complex parameters. It lists all preset names, enumerates op names, and gives a concrete example showing op payload fields such as color, color2, scale, octaves, and strength. It still leaves width, height, name, select, and include_data_url largely unexplained.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: "Paint a new texture from a preset and/or an ordered list of ops." This clearly communicates procedural texture generation. It does not explicitly differentiate itself from sibling tools such as bb_create_texture or bb_draw_texture, so it stops short of a 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives an example invocation, which shows how to use the tool, but it never says when to choose this tool over alternatives like bb_create_texture, bb_draw_texture, or bb_paint_pixels. There is no when-to-use, when-not-to-use, or alternative-routing guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.