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

Annotations already cover the safety profile (readOnlyHint=true, destructiveHint=false, closed-world), so the description need not restate it. It does add useful return-shape context (content, takeaways, and a media URL that is temporary and only present "when available") but says nothing about auth requirements or the not-found case.

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?

A single efficient sentence with the resource stated up front and no filler. It is suitably sized for a simple single-resource getter, though it is slightly terse given the absence of any usage framing.

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 one-parameter read-only tool whose annotations already declare the safety profile, the description covers the essentials plus the return shape, which matters since there is no output schema. The main omission is the temporary-URL expiry behavior and error handling.

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?

Only one parameter and schema description coverage is 100%, so the schema already defines clipId with its type and exclusiveMinimum constraint. The description adds no syntax, format, or sourcing detail beyond that baseline.

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 ("Get") and a singular resource ("one clip"), and lists what is returned (content, takeaways, media URL). This distinguishes it from list_clips through the word "one", though it never names a sibling explicitly.

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 statement or contrast with alternatives like list_clips or get_episode. The intended use (fetch a single clip by id) is only inferable from the required clipId parameter, leaving routing guidance to the agent.

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