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

With no annotations, the description carries full burden; it does usefully disclose cost (free) and a hard quota (3 drafts/day per IP), which is real behavioral value. However, it says nothing about whether drafts are persisted or returned inline, what the response contains, or what happens when the quota is exceeded.

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, zero filler, with the core action and its constraint front-loaded ahead of the rate-limit caveat.

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?

No output schema and no annotations means the description must cover return behavior, and it does not — an agent cannot tell if it receives a script string or a job handle (the video_status sibling hints at an async pipeline, which is never addressed). With 0% param coverage and an unexplained email field, the definition is under-specified for a 3-parameter generating 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 coverage is 0%, so the description must compensate. It names release notes as the source material but says nothing about product_name's role or format, and email is entirely unexplained — an agent cannot tell whether it is required for delivery, for quota tracking, or optional contact info.

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?

Specific verb+resource with concrete scope: 'Draft a 40–60 second launch-video script from release notes' names the output artifact, its length constraint, and the input source. It is clearly distinct from the only sibling, video_status, though it never explicitly contrasts with it.

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 only implied by the artifact described; there is no statement of when to reach for this versus video_status, no prerequisites, and no note on what to do if the script needs video rendering. The free/rate-limited note is context, not routing guidance.

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