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

readOnlyHint=true already declares a safe read operation, so the bar is lower. The description adds value by disclosing what comes back and in what format (full detail fields as markdown), which annotations don't cover. It does not mention behavior for unknown or unlaunched slugs.

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?

One sentence, front-loaded with the verb and resource, and every clause (the field list, the markdown format) adds information. Nothing is padded or restated from the name.

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?

With no output schema, the description correctly compensates by naming the returned fields and the format. The main remaining gap is error or not-found behavior for a slug that does not correspond to a launched product.

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?

There is a single parameter at 100% schema description coverage, and the schema already explains that it is a product slug from search_launches. The description adds no syntax, format, or validation detail beyond that, so baseline 3 applies.

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 (get) and resource (launched product) and enumerates the payload (description, pricing, use cases, alternatives, tech stack). This clearly distinguishes it from the sibling search_launches, which is a discovery tool, and from site_overview.

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?

Usage is implied by 'launched product' plus the schema note that the slug comes from search_launches, which suggests the search-then-fetch workflow. But the description itself never says to use this after search_launches or when not to use it, leaving the agent to infer the routing from the parameter schema.

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