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

The annotations already declare readOnlyHint=false, openWorldHint=true, idempotentHint=false, and destructiveHint=false, and the description is consistent with them: it implies a persisted report is produced, which explains the non-read-only, non-idempotent profile. It adds useful return-value context (scored gaps plus a durable report URL) but says nothing about authentication requirements, cost/rate limits, or what happens on repeated invocations.

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?

Two short sentences with the outcome front-loaded and no redundant wording. The second sentence is just a documentation link, which is acceptable but adds little on its own.

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 carries the burden of describing returns and does so explicitly (scored launch gaps plus a durable report URL). Combined with full schema coverage and informative annotations, an agent has enough to invoke it correctly, with sibling disambiguation the only real omission.

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%, so baseline is 3. The description only echoes the url parameter's constraint ("public launch URL") and adds no meaning for the bridge-injected platform and installId fields, though those are documented in the schema as automatically supplied.

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 gives a specific verb and resource ("Assess a public launch URL") and even states the return artifacts (scored launch gaps and a durable report URL). It does not differentiate itself from near-siblings like audit_my_launch, reassess_launch, or verify_launch_audit, so an agent cannot fully resolve which assessment tool to pick from the description alone.

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 when-to-use or when-not-to-use guidance and no mention of alternatives. With siblings named audit_my_launch, reassess_launch, verify_launch_audit, and get_assessment, the definition offers no routing logic for choosing among them.

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