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

Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, and openWorldHint=false, so the write/non-destructive profile is covered structurally. The description adds nothing on top of that — no statement about what gets created, whether names must be unique, or what happens on duplicate creation.

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?

It is a single short sentence with no wasted words, but that brevity reflects under-specification rather than efficiency for a tool taking a nested open-ended `data` object. There is no front-loaded information about the resource or its role in the simulation hierarchy.

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 nested object parameter with an open-ended `evaluations` array pointing at external documentation, and no output schema, the description should explain what a scenario is and how it relates to simulations and personas. It leaves those gaps entirely unaddressed.

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 nested `data` object documents name, instructions, and evaluations inline (plus a docs URL for extra fields), so the schema carries the load. The description adds no meaning beyond it, which lands at the baseline 3 for high-coverage schemas.

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 'Create a simulation scenario.' merely restates the tool name and title, adding no verb nuance, scope, or resource detail beyond what the identifier already conveys. It does not distinguish this tool from siblings like create_simulation, create_simulation_persona, or update_simulation_scenario.

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 use this versus create_simulation or create_simulation_persona, no prerequisites, and no mention of what a scenario belongs to. An agent must infer the relationship between simulations, scenarios, and personas entirely from sibling names.

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