create_interface_block

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It indicates a mutation (create) but does not mention side effects, prerequisites, or failure conditions. There is no information about whether the operation overwrites existing elements or validates the parent's existence.

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 a single concise sentence with no wasted words, and it front-loads the action. However, it is under-specified, lacking detail about parameters and behavior. It is appropriately sized for a simple tool but does not earn its place beyond stating the obvious.

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 presence of an output schema, return values are covered, but the description still lacks key context. There is no mention of required parent type, error handling, or how this relates to other create tools. For a mutating operation with no annotations, this is incomplete.

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 mentions 'parent_id' but provides no meaning for it or the 'name' parameter. The schema only gives types; the description adds no semantic context beyond that. An agent cannot infer what values are appropriate.

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 it creates a SysML InterfaceBlock, which is a specific resource type. This distinguishes it from sibling creation tools like create_block and create_constraint_block. The verb 'create' is explicit, and 'under parent_id' adds a location context.

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 phrase 'under parent_id' implies the element is placed within a parent, but there is no explicit guidance on when to use this tool versus alternatives. The tool name itself suggests it's for InterfaceBlock, but no direct comparison or exclusion is given. Usage is inferred rather than stated.

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