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

With no annotations, the description carries the full burden. It does disclose that this is a read operation on 'public' resources and that results include canonical URL and channel availability, but it says nothing about behavior on an unknown/expired ID (empty result vs error) or any access constraints beyond 'public'.

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 front-loaded sentence with the resource, the lookup key, and the notable return fields; nothing is padded. It is perhaps slightly over-compressed, folding return-value detail into a purpose statement.

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 one-parameter read tool with no output schema and no annotations, the description covers purpose, lookup key, and the key returned fields. The remaining gap is failure behavior for a missing or non-public ID, which an agent would want to know before calling.

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 coverage is 0% for the single `id` parameter, so the description must compensate. It adds the meaningful qualifier 'stable ID', signaling this is a durable identifier rather than a slug or name, but gives no format, example, or accepted ID namespace.

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: 'Read one public launch resource by its stable ID'. The phrase 'one' implicitly contrasts with the list-style sibling search_launch_resources, but that sibling is never named, so the differentiation is inferred rather than stated.

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?

'by its stable ID' implies the precondition that the caller already holds an identifier, which nudges toward use over search_launch_resources. However, there is no explicit when-to-use/when-not guidance and no mention of the search sibling for callers who only have a name or URL.

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