create_association

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

With no annotations, the description carries the full burden of behavioral disclosure. It only says 'Create', which implies mutation, but it does not explain side effects such as model modification, where the association is created, whether existing relationships are affected, or any requirements like ownership.

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 fluff, which is structurally efficient. However, it is under-specified for an operation with four parameters and no parameter documentation, so brevity comes at the cost of usefulness.

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 tool with four parameters, no annotations, and zero parameter documentation, the description is too thin. While an output schema exists and return values need not be explained, the missing details about parent_id, source_id, target_id, and name leave the description incomplete for correct invocation.

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% and the description does not explain any of the four parameters. The phrase 'between two classifiers' hints that source_id and target_id refer to classifiers, but parent_id and name are entirely unexplained, leaving the agent to guess their meaning.

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 'Create a UML Association between two classifiers' uses a specific verb and resource and identifies the kind of relationship being created. It is clear enough to distinguish from many sibling tools like create_generalization or add_dependency, though it does not explicitly distinguish itself from create_association_block.

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 description provides no guidance on when to use this tool versus alternatives such as create_association_block, create_connector, or add_dependency. It states what the tool does but gives no context about when this specific relationship type should be chosen.

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