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

Adds substantial behavioral context beyond the annotations: the default save-a-preview-without-changing-script contract, that unsolicited settings stay proposals, quota consumption, and the returned preview identifier for a later explicit apply/dismiss. This clarifies that the destructiveHint=true mutation is opt-in via apply, which is valuable. It does not cover permissions/auth needs.

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?

Well front-loaded with the core behavior first, then the flags. Slightly repetitive ('does not change script/settings' restated as 'do not rewrite the script'), but each sentence mostly earns its place for an operation with this many modes.

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 tool with 0% schema coverage and no output schema, the description explains the mutation contract and return value well but leaves most parameters undocumented. An agent could still invoke it, but would be guessing on brandId, objective, escalationOf, and intentSection.

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%, so the description carries the full burden, yet it only explains apply and searchWeb. The other six parameters (contentId, message, brandId, objective, escalationOf, intentSection) get no semantic treatment, so the compensation is partial at best.

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 ('Refine or discuss a script') with supporting machinery named (brand voice, memory, restrictions, source text, chat history). It clearly defines the operation, but never names or contrasts a sibling tool (e.g., review_content_refinement, update_content), so an agent must infer the boundary from behavior alone.

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 real when-to-use guidance: default is non-mutating preview, apply=true for explicitly requested edits, and questions/web-search offers explicitly do NOT rewrite the script. It stops short of naming alternative tools for related tasks (review, dismiss, update_content).

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