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

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=false, and openWorldHint=false, so the safety profile is covered. The description usefully adds that templates are versioned and that running them produces editable projects, but it omits the destructive implication of supplying templateId (overwriting/versioning an existing template), which is exactly where the destructiveHint matters.

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 with the essential fact (what is saved, what it contains, what it yields). No filler, no restatement of the tool name beyond what is needed.

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?

A destructive mutation tool with three parameters, a nested definition object, no output schema, and zero schema description coverage needs more than two sentences. The description leaves the create-vs-update semantics, the response shape, and most definition fields unexplained, so the agent cannot call this confidently.

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 burden, yet it only partially compensates: it explains the {{parameter}} placeholder convention used in shot prompts and roughly what belongs in the definition. It says nothing about workspaceId, about templateId being the update path, or about resolution/aspectRatio/type, and its '3 to 5 shot stories' framing conflicts with the schema's 1–8 shot bounds.

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 ('Save a versioned production template') and enumerates the supported kinds (product ads, short stories, image localization), which maps cleanly onto the definition.kind enum. It does not, however, distinguish itself from the close siblings validate_production_template, run_production_template, or get_production_template, so the agent must infer the boundary.

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 and no mention of alternatives or sequencing (e.g., validating a template first, or getting a template before re-saving it). It also never explains the create-vs-update branch implied by the optional templateId, which is the main decision an agent faces here.

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