create_mortise_tenon

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

With no annotations provided, the description is expected to fully disclose behavioral traits. It mentions a key behavioral nuance (Pydantic overriding Ruby defaults) but omits details like whether the operation is destructive, requires component selection, or how the joint is applied in the 3D model. This leaves significant gaps for an 8-parameter tool.

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?

The description is well-structured: it starts with the core purpose, then gives contextual details about units and defaults, and ends with an important implementation note. Each sentence adds value, though the text could be slightly more concise without losing information.

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?

Given the complexity (8 parameters, 0% schema coverage, and an output schema not described), the description covers the essential purpose, units, default rationale, and a critical synchronization warning. However, it lacks details about parameter types/mortise, return value, and side effects, making it only partially complete.

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 description coverage is 0%, so the description must compensate. It adds meaning for width, height, depth by giving typical dimensions and units (mm). However, it does not explain the required 'mortise_id' and 'tenon_id' (e.g., what they refer to) or the offset parameters, leaving those ambiguous.

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?

The description clearly states the tool creates a mortise and tenon joint between two components. This directly and specifically identifies the tool's function, distinguishing it from sibling tools like create_dovetail or create_finger_joint.

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?

The description provides some usage context (e.g., default sizes suited for a typical board) and a critical note about parameter synchronization, but it lacks explicit guidance on when to prefer this tool over alternatives. The differentiation from siblings is implied by the tool name rather than stated.

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