validate_part_spec

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

No annotations are provided, so the description carries the full disclosure burden. It does add useful behavior: it returns a JSON string with validation status, errors, and checked dimensions, and the nature of "validate" implies a non-destructive read. However, it never explicitly asserts read-only behavior, permission requirements, or what happens on an invalid or missing spec file.

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?

Front-loaded single-sentence purpose followed by Args and Returns sections, with no filler. The structured Args/Returns blocks are slightly formal for one parameter but earn their place by being scannable.

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?

An output schema exists, so the Returns section is more than was strictly needed, and the single required parameter is explained. What is missing is any definition of 'design:os requirements' and any statement of when the tool should be selected, which leaves the agent guessing at the domain context.

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 schema contributes nothing beyond the bare string type and the title 'Spec Path'. The description compensates by explaining that spec_path is the path to the part specification JSON file, adding format and content meaning the schema lacks. It is the only parameter, so this is adequate coverage.

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 specific verb (validate) and resource (3D part specification / spec.json) plus the standard it is checked against (design:os requirements). That is clear enough for an agent to know exactly what the tool does. It does not differentiate itself from siblings, though the sibling names (blender_runtime_status, query_blender_knowledge, execute_blender_pass) are different enough in function that confusion is unlikely.

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?

No explicit statement of when to call this versus alternatives, and no preconditions such as whether a spec must already exist or whether a runtime must be running first. Usage is only implied by the name and by the sibling set. Adequate but with a clear gap.

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