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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the agent knows this is a safe read/generation operation. The description adds the behavioral trait that it returns an array of names, which is useful. However, it does not disclose details like randomness, uniqueness, or whether the same input yields different outputs, which would be valuable for a generation tool. The description does not contradict annotations.

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 two sentences and front-loads the core purpose. The second sentence about the return type is useful but could be considered redundant given the output schema exists. Still, it is concise and every sentence earns its place.

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 the tool's simplicity, the output schema, and the annotations covering safety, the description is nearly complete. It could mention that the tool is non-deterministic or that names are randomly generated, but for a simple name generator with fully documented parameters, the current description is adequate.

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 100%, so the schema already documents all three parameters (count, length, includeEpithet) with descriptions and defaults. The description adds no additional parameter-level meaning beyond what the schema provides. Baseline 3 is appropriate because the schema does the heavy lifting.

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 uses a specific verb ('generate') and resource ('draconic names'), and the title 'imagine_generate_draconic_name' is clearly reflected. It distinguishes itself from sibling tools like imagine_generate_npc by focusing on name generation, and the description's mention of 'harsh phonetics of the Draconic tongue' adds flavor that clarifies the resource.

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 implies a creative-generation use case, and the sibling list shows many other generation tools (e.g., imagine_generate_npc, vault_build_monster), but the description does not explicitly state when to use this tool versus alternatives. It is clear enough for an agent to infer that this is for generating draconic names, not NPCs or other entities, but it lacks explicit when/when-not guidance.

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