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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the bar is lower. The description adds that adult vocabulary is included via an optional filter, which hints at the default-true behavior, but says nothing about result ordering, page size behavior, or what happens when limit caps out at 20.

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 tight sentence with no padding, and the core purpose is front-loaded. The brevity, however, borders on under-specification rather than efficient concision given the tool's parameters.

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?

No output schema exists, so the description ought to convey what a 'dictionary summary' contains, but it does not. Combined with the undocumented limit parameter and no guidance on result ordering, the definition is minimally adequate rather than complete.

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 only 50%: include_mature is documented in the schema, while limit has no description anywhere. The description's 'optional adult-language filter' merely restates what the schema already says about include_mature and adds nothing about the size/ordering semantics of limit.

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 a specific verb and resource ('Get recent published dictionary summaries') plus a secondary capability (adult-language filter), so the tool's function is clear. It does not, however, distinguish this from siblings like lookup_term or search_terms, so an agent must infer that 'recent' browsing is the differentiator.

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?

There is no explicit when-to-use guidance and no mention of alternatives among the five sibling tools. 'Recent published' implies a browse-latest use case, but the agent is left to infer when this beats search_terms or lookup_term.

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