create_transition

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 states the creating effect but does not mention side effects, ownership/containment requirements, diagram-symbol behavior, or failure conditions. This is a minimal mutation disclosure.

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?

A single, front-loaded sentence with no filler. Every phrase adds information: the operation, the resource, the allowed endpoint types, and the owning context.

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?

The output schema covers return values, and the description covers the basic creation intent, but it omits the relationship to the broader state-machine structure and prerequisites for the three IDs. This is adequate for a simple create tool but leaves 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 0%, so the description must compensate. It adds meaning by indicating that source_id and target_id should be Vertex elements (States/Pseudostates) and that parent_id is a StateMachine. However, it does not fully map each parameter or explain constraints such as containment or distinctness.

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 names a specific verb ('Create'), a precise UML resource ('Transition'), and the exact element types involved ('two Vertex elements (States/Pseudostates) in a StateMachine'). This makes it distinguishable from siblings such as create_connector, create_control_flow, and create_message without needing to inspect schemas.

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 StateMachine and Vertex context implies when the tool is appropriate, but there is no explicit guidance about when not to use it or which sibling alternatives to choose. Unlike a stronger description, it does not name a differentiating alternative such as create_connector or create_control_flow.

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