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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered and the description's remaining job is small. It does add useful behavior: the shape of the returned content and the 4-answered-question prerequisite for send_brief. It does not say what happens when video_type is omitted (0 required params) or whether the returned guidance differs per type beyond the parenthetical hint.

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 sentences, zero padding. The payload (what you get back) comes first and the follow-up action (send_brief) second, matching the order an agent needs them.

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 return-value burden and does so by enumerating the four content blocks. What's missing is minor: the behavior when video_type is omitted and whether the answer is type-tailored wholesale or only in the noted cases.

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 100% with a documented enum, so the baseline is 3. The description earns above baseline by implying the response branches on type — the step-by-step process appears specifically for courses, video podcasts and studio setups — which tells the agent that video_type changes the output, not just a filter label.

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 concrete outcome — returning the 10 brief questions, formats, timeline and a prep checklist — and names VIDEO DEPT. as the domain. It is clearly a read/informational tool, but the verb 'Returns' is weak framing for what is effectively 'get the brief-planning kit', and it doesn't sharply distinguish itself from the other content-returning siblings like send_brand_guide or get_studio_info.

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?

The second sentence gives an explicit hand-off condition: once at least 4 questions are answered, use send_brief. That routes the agent correctly between planning and sending. It stops short of saying when NOT to call this (e.g., when the video is already briefed), so it's clear context rather than full when/when-not guidance.

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