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

Annotations are all false and provide minimal safety context. The description adds a useful behavioral fact—the destination URL is preserved—and implies a mutating duplication operation, but it does not disclose whether a new UUID is generated, what other fields are copied, or the response shape.

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, front-loaded sentence with no filler. It states the operation and its key behavioral nuance in ten words.

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 one-parameter tool with no output schema, the description covers the core invocation and behavior. Still, it omits the return value—presumably the new cloned link and its UUID—and the full scope of what is duplicated, leaving a gap for agents that need to chain subsequent calls.

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 for the undocumented 'uuid' parameter. It implicitly frames the uuid as identifying 'an existing link' to duplicate, which is helpful, but it never explicitly maps the parameter to that role or explains where the uuid comes from.

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 the action 'Duplicate' and the resource 'an existing link,' and adds the crucial outcome 'keeping its destination URL.' This distinguishes it from split_create_link and split_update_link without needing to inspect those tools.

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 'existing link' provides clear context that this tool is for copying an already-created link, rather than creating a new one from scratch. However, it does not explicitly name alternatives or state when not to use this tool.

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