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

Annotations already disclose that the tool is read-only, open-world, non-idempotent and non-destructive. The description adds useful scope—next 100 launches worldwide and returned fields—but does not explain the role of the required input, time semantics, freshness, or behavior of the '_at' variant.

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 wasted words. It is concise, though its terseness contributes to the missing usage and parameter context.

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 tool with a required but entirely undocumented input and no output schema, the description is not complete enough. It lists some returned fields, but does not explain how to invoke the tool or how it differs from its sibling.

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?

The schema has one required parameter named 'input' with no type, description or structure, and the description does not mention or clarify it at all. With 0% schema description coverage, the description fails to compensate for a completely opaque required parameter.

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 identifies the resource and scope: the next 100 launches worldwide, including rocket, mission, pad and window fields. It lacks an explicit verb and does not distinguish this tool from the sibling cell_sensor_launches, but the data purpose is still understandable.

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 tool versus alternatives. The sibling cell_sensor_launches exists, and the '_at' suffix strongly suggests a meaningful distinction, but the description never explains when this variant should be chosen.

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