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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so the safety profile is covered by structured data. The description adds that results are bounded and that no generation/rendering occurs, but says nothing about pagination traversal, ordering, or what happens when no candidates exist.

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, both front-loaded: the first says what is returned, the second bounds expectations and rules out adjacent operations. No filler or restatement of the tool name.

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 an output schema present the description need not explain return shapes, and it correctly focuses on purpose, exclusions and boundedness. The only real gap is parameter-level guidance for the two UUID scoping arguments and paging controls.

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 only 25% (assetId is documented merely as "UUID string"; workspaceId, limit and offset have none). The description contributes no parameter meaning at all — it never explains what assetId/workspaceId scope the candidate listing to, nor that limit/offset drive the paging implied by "results are bounded."

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 ("Read") and resource ("existing suggested moments") and enumerates the payload an agent will see (source ranges, hooks, transcript excerpts, thumbnails). It is clear this is a read of pre-computed candidates rather than the clips themselves, though no sibling from the large clips_* family (e.g. clips_list, clips_inspect) is named to disambiguate.

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?

"before producing videos" places the call in a workflow sequence, and "this does not generate suggestions or render clips" is an explicit when-not that excludes clips_create/clips_export style work. No named alternative tool is given for the case where the agent wants committed clips rather than candidates.

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