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

Goes well beyond the annotations (readOnlyHint=false, openWorldHint=true, destructiveHint=false) by disclosing that RTMP secrets are returned only once, that events consume plan live-streaming hours, that defaults are left in place, and that a Cotlet API key with app access is required. It also flags that the call reaches other people and needs user confirmation per call — exactly the kind of side-effect context annotations cannot convey.

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?

Front-loaded with the core action and the RTMP return caveat, and most sentences carry distinct operational information. It does repeat the 'stream URL and stream key' point twice, which is minor waste in an otherwise dense block.

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 an 8-parameter mutation with no output schema and no annotations covering safety, the description covers return values (RTMP), auth requirements, plan-hour consumption, visibility effects, and confirmation behavior. It is only slightly thin on the live_studio and zoom method outcomes, but nothing critical for correct invocation is missing.

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 every parameter is already documented, which sets the baseline at 3. The description reinforces the RTMP method's output and the publish/preregistration effects but adds no syntax or format detail beyond what the schema already provides.

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 ('Create a live event') and names the exact destination ('Content > Live Streaming'), so an agent can separate it from uscreen_list_live_events and the other create tools. The RTMP return-value note adds further specificity about what this particular call produces.

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?

Gives clear operating context: purchase/access options stay at defaults and should be checked, published events become member-visible, preregistration adds a countdown, and confirmation is on by default but can be switched off. It does not explicitly name a sibling alternative or state when NOT to use it, so it falls short of full routing guidance.

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