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

Annotations already declare destructiveHint=true and idempotentHint=true, so the description's real contribution is the cascade scope: artifacts and rubric are destroyed along with the model, which is exactly the kind of detail annotations cannot express. It omits auth requirements and irreversibility confirmation, and the trailing "Free." is unexplained, but the key destructive side effect is disclosed.

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 action and its cascade are front-loaded in one tight sentence, but the isolated fragment "Free." is unearned and ambiguous — it is unclear whether it refers to cost, quota, or something else, so it adds noise rather than value.

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 single-parameter, non-open-world tool with no output schema and rich annotations, the definition covers the action, the cascade effect, and the safe-read indicators. The main remaining gap is the unexplained "Free." and the absence of any recovery/irreversibility note.

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% and the single model_id parameter is documented as coming from atlas_list_custom_eval_models, so the schema already does the work. The description adds no meaning about the parameter beyond that baseline.

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?

States a specific verb and resource ("Delete a custom evaluation model") and adds scope ("with all its artifacts and rubric"), which distinguishes it from the create/get/update siblings. No explicit sibling comparison, but the destructive action is unambiguous.

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?

There is no guidance on when to delete versus updating or leaving a model in place, no stated prerequisites or permissions, and no mention of the alternative of clearing a rubric or removing individual artifacts instead of deleting the whole model.

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