create_armature

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

Annotations already declare it is a non-destructive, non-open-world write. The description adds real behavioral context beyond that: bones are in world metres and parents must be listed before children, an ordering constraint that will cause failures if violated. It does not say what happens on name collision or what is returned.

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

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

Purpose is front-loaded in the first sentence, but the bones schema is rendered with stray quotes and mid-sentence line breaks, making the spec harder to parse than it needs to be. Content mostly earns its place, but the formatting is sloppy.

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

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

For a two-parameter creation tool with annotations covering the safety profile and no output schema, the description covers the input format, ordering requirement, and follow-up workflow. Missing only the armature 'name' semantics and error/collision behavior.

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

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

Schema coverage is 0% and the bones array is an untyped object with additionalProperties, so the schema documents nothing. The description compensates by enumerating the exact item keys (name, head, tail, parent, connect) and units, which is substantial added meaning; only the top-level 'name' parameter is left unexplained.

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

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

States a concrete verb and resource: make a skeleton (armature) from numeric bone data. An agent can distinguish it from mesh-creation siblings like create_primitive or limb, though it never explicitly contrasts itself with limb or list_bones.

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

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

Gives a clear workflow: create the armature, then 'bind a mesh with bind, and test with pose', naming the two sibling tools that follow this one. It does not state when NOT to use it or prerequisites (e.g. mesh must already exist), so it stops short of a 5.

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