Prepare an editable playlist video project

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. The description adds genuinely new context: the output is a local draft, not a rendered video, and no audio or lyrics are fetched, which prevents the agent from over-promising a final artifact.

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, front-loaded with the core action and artifact, followed by the operational next step and the negative boundaries. No filler.

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 usefully names the 'project' field that is returned and how to use it, which is the key missing piece. The unexplained 'language' parameter is the only substantive gap for a three-parameter 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 description coverage is 0%, but the description compensates for two of three params by stating the 1–12 track limit and the fixed count of three captions. It never mentions the 'language' parameter or its en/zh/id enum, leaving that enum to the schema alone.

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?

The description names a specific verb and artifact ('Prepare a free local-workspace JSON draft') and quantifies scope ('1–12 song/artist title cards and three original captions'), so the agent knows exactly what is produced. It does not explicitly contrast with the close names get_creation_template or search_playlist, so sibling differentiation is left implicit.

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?

It gives a concrete workflow ('Save the project field as JSON, then import it on the linked workspace') and clear exclusions ('does not render a video, fetch audio or provide song lyrics'), which tells the agent when this tool is and is not appropriate. It stops short of naming the replacement tools for those excluded jobs, so the alternative routing is incomplete.

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