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

With no annotations, the description carries the full burden and does well: it discloses that access is public with no key required, that the content is fixed (static, not user-scoped), that it is versioned ('Word list version 6'), and it even names the equivalent HTTP endpoint. It does not mention rate limits or content-type, but the auth and stability profile an agent most needs is present.

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?

Three short sentences, front-loaded with what the resource is before the access and endpoint details. The parenthetical inventory of contents is slightly rambling, but every clause carries information an agent can use.

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 no-auth, zero-required-parameter lookup with no output schema, the description covers the important ground: contents of the payload, access model, stability, and version. The main omission is guidance on how the returned keys should be used downstream, which is a minor gap for a reference-lookup tool.

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 100% and the single vertical parameter is a const with its own explanation, so the baseline is 3. The description adds only a mild reinforcement by citing the house_cleaning-specific endpoint; it introduces no syntax or value guidance beyond the schema.

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 names the resource concretely (a fixed word list of version, groups, keys with labels and synonyms) and states its role: the vocabulary agents use to describe a job and a home. That is enough to separate it from siblings like book, quote, or search. It lacks an explicit verb such as 'retrieve', so it reads as a noun phrase rather than a stated action.

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?

Usage is only implied — an agent infers it should call this to obtain the valid key vocabulary before describing a job or home. There is no explicit when-to-use, when-not-to-use, or comparison against siblings such as search or discover, which might also surface vocabulary.

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