best_design_version

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

With no annotations, the description carries the full burden, and it does disclose a tier/auth gate ('Requires Kiln Pro'), which is genuinely useful behavioral context. However it says nothing about how the success rate is computed, what happens when no outcome data exists, or how ties/missing material or printer arguments are handled.

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 first sentence is tight and front-loaded, but the second paragraph is marketing ('branch, restyle, compare outcomes...') and the third is a paid-upgrade URL. Roughly two-thirds of the text sells Kiln Pro rather than describing tool behavior.

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 3-parameter selection/scoring tool with no annotations and no output schema, the description omits the return shape, the ranking basis, and edge-case behavior. Only the Kiln Pro requirement is covered, leaving significant gaps.

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 67%, and the undocumented required parameter version_ids has only the title 'Version Ids', while material and printer_id carry useless 'Default: ""' descriptions. The description adds no parameter meaning at all, not even clarifying that version_ids is the candidate pool or that material/printer_id scope the success-rate lookup.

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+resource: find the version with the highest success rate. This is distinguishable from siblings like list_design_versions, search_design_versions, and compare_design_versions, though it never names those siblings or says where the candidate versions come from.

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?

There is no when-to-use guidance and no comparison to alternatives such as compare_design_versions or design_version_health. The only conditions given are commercial ('Requires Kiln Pro'), not operational.

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