create_structure_group

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

Annotations already indicate this is a mutating, non-idempotent operation. The description adds context about construction-stage activation, but does not disclose behavior around duplicate group names, whether element IDs must already exist, or what the tool returns on success or failure.

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 compact: a clear first sentence, a one-line purpose context, and a concise Args block. The Chinese translations are redundant but not harmful; every English sentence earns its place.

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 no output schema, the essential invocation details are present: name, optional element IDs, and the accepted range-string format. However, it omits important operational context such as duplicate-name behavior, whether elements must pre-exist, and how to add elements later, leaving an agent to infer some failure modes.

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 carries the burden. It documents name as the structure group name and element_ids as 'int list or range string like 1to20', providing format guidance beyond the bare anyOf in the schema. It stops short of explaining constraints like range inclusivity or duplicate handling, but is still genuinely helpful.

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 action and resource: 'Create a structure group and optionally assign elements to it.' It also explains the purpose in construction-stage analysis, which distinguishes it from sibling tools like update_structure_group_name, remove_structure_group, and create_boundary_group.

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 construction-stage context implies when structure groups matter, and the optional element_ids parameter implies you can create an empty group or one with elements. However, it never explicitly says when to use add_to_structure_group or add_elements_to_group for existing groups, nor does it state any exclusions or alternatives.

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