create_ros2_clock_publisher

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

With no annotations, the description bears the full burden of behavioral disclosure. It mentions a preview/create dichotomy, implying one mode is non-mutating and the other is mutating, but it does not state side effects, default preview behavior, idempotency semantics, reset_on_stop effects, or what 'playback-driven' actually changes in the graph.

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. The action ('Preview or create') comes first, and the qualifier ('playback-driven') adds distinguishing context without waste.

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 a 9-parameter tool with no annotations and zero schema description coverage, this description is far too sparse. It does not explain what a 'ROS 2 Clock publisher graph' is, how preview differs from creation, or why 'playback-driven' matters. The presence of an output schema reduces the need to describe return values, but does not compensate for missing behavioral and selection context.

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 for undocumented parameters. It does not explain any of the 9 parameters; 'Preview or create' only indirectly maps to the preview boolean. The meaning of domain_id, graph_path, qos_profile, reset_on_stop, idempotency_key, and node_namespace is left entirely to the schema.

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 pair ('Preview or create') and a specific resource ('playback-driven ROS 2 Clock publisher graph'). It clearly distinguishes this tool from sibling publisher tools like create_ros2_tf_publisher and create_ros2_camera_publisher by specifying 'Clock'.

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 conveys a usage context: this is for playback-driven clock publishing, and there is a preview mode versus a create mode. However, it never states when to prefer this tool over siblings, when not to use it, or what conditions warrant preview versus create.

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