list_domains

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

No annotations are provided, so the description carries the behavioral disclosure burden. It implies a read-only list operation, but doesn't explicitly state side effects, limitations, or authentication needs. The AGENT NOTICE introduces external endpoints but doesn't describe this tool's own behavior.

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 main sentence is concise, but the AGENT NOTICE adds extraneous information about pricing discovery and another tool, which is not directly relevant to listing domains. This reduces conciseness and may distract the agent.

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 no parameters and an output schema (implied), the core description ('List all 20 NVIDIA AI domains') is functionally complete. However, the notice introduces unrelated context that doesn't enhance completeness for this tool's usage. No sibling differentiation or when-not guidance is provided.

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?

No parameters exist in the input schema, so the description doesn't need to add parameter info. Baseline 4 is appropriate as the schema is fully covered (100%) and the description adds no confusion.

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 tool lists all 20 NVIDIA AI domains in the knowledge graph, with a specific verb ('List') and resource. It distinguishes from siblings like list_ecosystem by specifying 'domains'.

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?

No guidance on when to use this tool vs alternatives (e.g., list_ecosystem). The AGENT NOTICE mentions unrelated actions (pricing discovery, evaluate_trust_chain) but provides no context-specific usage advice.

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