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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is covered. The description usefully discloses that the payload includes a script and signed media URLs, but says nothing about URL expiry, missing-piece behavior, or whether regeneration state is reflected.

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 front-loaded sentence with no filler; the returned artifacts are named immediately after the primary action.

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 correctly takes on the job of naming the return payload (piece, script, signed media URLs), which is the key information an agent needs. It stops short of error/edge-case behavior, but for a one-parameter read this is close to sufficient.

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?

One parameter (pieceId) with 0% schema description coverage and no format explanation in the description. The name is largely self-explanatory given 'Get one content piece', but the description adds no syntax or scoping detail beyond what the schema's uuid pattern already enforces.

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 resource (one content piece), and adds that the response bundles the script and signed rendered-media URLs. That return-scope detail distinguishes it from list_content and get_content_source, though no sibling is named 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?

No when-to-use guidance, no prerequisites, and no routing to alternatives such as list_content (for enumeration) or get_content_source (for the source asset). The agent must infer from the name alone that this is the single-item fetch.

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