Material Maker MCP

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describe_material_recipe

Read-onlyIdempotent

Retrieve a material recipe’s graph, parameters, connections, and suggested variations to inspect or recreate its procedural setup.

Instructions

Return one recipe's graph, parameters, connections, and suggested variations.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "recipe_id": "<recipe_id>"
    },
    "name": "describe_material_recipe"
  }
}

Input Schema

Name	Required	Description	Default
`recipe_id`	Yes

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.3.1Sep 29, 2026

TDQS

B3.1/5.0

Behavior3/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered by structured data. The description adds nothing behavioral beyond that, and its content list largely duplicates what the output schema carries. It is truthful and consistent, but contributes little beyond annotations.

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

Conciseness5/5

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

A single front-loaded sentence with no filler, stating the action first and the payload second. Nothing is wasted.

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?

An output schema exists, so return values need not be explained, and annotations cover the safety profile. However, for a tool whose only input is an undocumented required id, the definition omits the one piece of information an agent actually needs: how to obtain or format recipe_id, and how it relates to list_material_recipes.

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

Parameters2/5

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

Schema description coverage is 0% and the single parameter recipe_id is undocumented in both schema and description. The description does not say where a recipe_id comes from (e.g., list_material_recipes) or what format it takes, so it fails to compensate for the coverage gap.

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?

States a specific verb ("Return") and resource scope ("one recipe's") plus the returned content (graph, parameters, connections, suggested variations). The single-recipe scope implicitly distinguishes it from the sibling list_material_recipes and apply_material_recipe, but no sibling is named explicitly.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives such as list_material_recipes (to find recipes) or get_material_graph (for one graph). The agent must infer when this tool is the right choice from the description alone.

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