Set the widget wording for one language

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

The annotation already provides readOnlyHint=false, idempotentHint=true, and destructiveHint=true. The description adds a useful user-facing effect, but it does not clarify what happens when optional fields are omitted, whether this overwrites an existing translation, or whether the change can be reverted. This is acceptable but not rich behavioral disclosure beyond the annotations.

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?

The description is two purposeful sentences: the first states the operation and the fields affected, the second clarifies the user-facing consequence. No filler or redundant information.

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 a simple five-parameter mutation with full schema coverage and annotations, the description supplies enough context about where the wording appears and how language selection behaves. A note about omitted-field behavior would improve completeness, but the description is arguably adequate.

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?

The input schema already covers all five parameters with clear descriptions, and the description mostly rephrases the same concepts ("greeting, agent name, bubble text"). There is no additional parameter-level guidance beyond the schema, so the baseline score of 3 is appropriate.

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 states the verb and resource clearly: "set the chat widget's greeting, agent name and bubble text for one language." It distinguishes itself by language scoping and mentions the default-fallback behavior, though it does not explicitly differentiate from close siblings like update_widget_settings.

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?

"A visitor in that language sees this wording instead of the default" implies a localized-use case, but the description does not give explicit when-to-use/when-not-to-use guidance or name an alternative sibling. The context is clear but the routing to alternatives is left to inference.

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