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Unity MCP Claude Code

Unity MCP Claude Code

by MauricePutinas
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

create_animation_clip

Creates a procedural AnimationClip from keyframe curves for idle-bob, pulsing, or rotation animations without external assets.

Instructions

Erzeugt eine AnimationClip (.anim, Job) aus Keyframe-Kurven — prozedurale Animation ohne externe Assets (z.B. Idle-Bob, Pulsieren, Rotation). spec = {"path":"Assets/Anims/Bob.anim","frameRate":30,"loop":true, "curves":[{"relativePath":"Visual","type":"Transform","property":"localPosition.y", "keys":[{"t":0,"v":0},{"t":0.5,"v":0.25},{"t":1,"v":0}]}]}

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": {
      "project_path": "<project_path>",
      "spec": "<spec>"
    },
    "name": "create_animation_clip"
  }
}

Input Schema

NameRequiredDescriptionDefault
project_pathYes
specYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv2.1.0

TDQS

A3.7/5.0
Behavior2/5

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

Annotations already indicate readOnlyHint=false and destructiveHint=false. The description adds minimal behavioral context beyond stating it creates a clip. No further info on permissions, side effects, or error conditions.

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 brief but informative, with two sentences. The first sentence states purpose, and the second provides a practical spec example. No wasted words, though could be slightly more structured.

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?

For a complex tool with nested object parameters and no output schema, the description lacks return value information. It does not specify what the tool returns (e.g., job ID, success status), leaving a gap for the agent.

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

Parameters5/5

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

The schema has 0% description coverage, but the description provides a concrete example of the spec object with path, frameRate, loop, and curves structure. This adds significant meaning beyond the bare type definitions.

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

Purpose5/5

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

The description clearly states the tool creates an AnimationClip from keyframe curves, with examples like Idle-Bob and Pulsieren. It effectively distinguishes from siblings such as list_animation_clips (listing) and build_animator_controller (building controllers).

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

Usage Guidelines3/5

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

Usage guidance is implied: procedural animation without external assets. However, no explicit when-to-use or when-not-to-use compared to alternatives like build_animator_controller, and no exclusion criteria are provided.

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

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