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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds that a search with no query behaves as a full listing, which is genuinely useful behavioral information, but it says nothing about result ordering, pagination beyond the limit param, or matching behavior (fuzzy vs exact).

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?

Front-loaded with the purpose, then search mechanics, then the no-query default. The parenthetical listing of study subjects (work, faith, law, money, dangers, news) is slightly ornamental but helps convey the resource's nature without much cost.

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, and the description does characterize what a result is (a sourced study of a place in one decade), which compensates. With annotations covering safety and the schema covering parameters, the definition is complete enough to call correctly, though result ordering/count semantics are unstated.

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% so the baseline is 3, but the description goes further by giving concrete query examples ('Wilkes-Barre', 'Luzerne Pennsylvania', 'Essex England') that clarify the multi-word/region matching style, and by tying the decade parameter to the query ('optionally in one decade').

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 (Find/Search) and resource (places = sourced decade studies of a town/county/city), and even elaborates what a 'place' record contains. It doesn't explicitly contrast itself with the get_place sibling (singular lookup) or about_yore, so it stops short of full sibling differentiation.

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?

It explains the no-query fallback ('with no query it lists everything') and the optional decade filter, implying when the tool applies, but never says when to use this instead of get_place or about_yore. Usage is inferable rather than explicit.

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