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

Annotations already declare read-only, idempotent, non-destructive, closed-world behavior, so the safety bar is low. The description still adds two things annotations cannot: an API-key authentication requirement and the state caveat that a 'Submitted' result is not the same as 'Approved'. The remaining gap is that it never explains what the returned directory statuses actually are.

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?

Three compact sentences with the auth prerequisite front-loaded and no filler. The phrasing 'with each directory result' and 'Submitted is not approved' is terse to the point of ambiguity, which keeps it just short of a 5.

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 optional parameter, read-only tool with no output schema, the description covers auth, scoping, and one status caveat. It is still incomplete on the things an agent most needs here: what status values come back per directory and how they relate to each other, which is the entire point of a status-check tool.

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 0%, so the description must carry the load, and it does: it explains that launch_id scopes to a single launch and that omitting it returns all launches, which is the essential meaning of this optional parameter. It does not mention the UUID format, but that is already in the schema.

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 says to pass launch_id for one launch or omit it for all, and that each directory result is returned, which implies it reports per-directory listing/submission status. But it never states the verb+resource plainly ('check listing/submission status across directories'), and with siblings like get_launch and list_launches also returning launch data, the boundary is left for the agent to infer.

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?

It clearly explains the single-vs-all selection rule for the one parameter, which is useful invocation guidance. It gives no guidance on when to use this instead of get_launch, get_launch_overview, or list_launches, so the agent has no routing signal among overlapping siblings.

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