Skip to main content
Glama
sattua

Blender MCP Server

by sattua

list_bones

List bone names from a Blender armature, returning pose or edit bone names for use in animation or rigging.

Instructions

List bone names for an armature (pose or edit names).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
armature_nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations provided, so description carries burden. It discloses that both pose and edit names are listed, implying read-only behavior, but doesn't explicitly state non-destructiveness or return format. Output schema exists but not detailed.

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?

Single sentence with verb and resource front-loaded. No wasted words; every word adds value.

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

Completeness4/5

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

For a simple list tool with one parameter and an output schema, the description is largely complete. It covers purpose, parameter role, and modes. Minor gap: no error handling or edge case mention.

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?

Single parameter 'armature_name' has 0% schema description coverage, but the tool description clarifies it refers to the armature's name. The description adds implicit meaning beyond the schema, compensating for low coverage.

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 uses specific verb 'list' and resource 'bone names' with context 'for an armature', and distinguishes between pose and edit names. It clearly differentiates from sibling tools like list_armatures and list_objects.

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 is implied when needing bone names for an armature, but no explicit guidance on when to use or not use this tool versus alternatives like list_armatures. No exclusions or prerequisites mentioned.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/sattua/MCP-Server-for-blender'

If you have feedback or need assistance with the MCP directory API, please join our Discord server