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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds useful content-shape context (rules carry display text; sources carry URL, publisher, capture date, quote), which tells the agent this is the heavy-detail endpoint versus a search hit; it does not mention response size or cost of a full fetch.

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 front-loaded first sentence is good, but the second sentence re-says the same thing ('Full rules and sources for one place: every fact with its display text, the rules list, and each source with its URL, publisher, capture date and quote'), a near-duplicate that consumes space without new information. The usage hint and example are buried after the redundancy.

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?

With an output schema present, the description need not explain return values, and annotations cover the safety profile, so the remaining burden is provenance and precondition — both addressed via the sibling-tool routing. A note on behavior for unknown or ambiguous ids is the only meaningful gap.

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 both parameters are documented, including the response_format enum, so the baseline is 3. The only added value is an example id ("carmel-beach"), which duplicates the schema's own example ("fort-funston") and adds nothing about id format or fallback behavior when an id is unknown.

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 ('The full record for one place') and enumerates what that record contains: dog rules, rules list, and sources with URL, publisher, capture date and quote. It also distinguishes itself from siblings by noting the id comes from dogpolicies_search_places or dogpolicies_find_hotels, though the second sentence restates the first almost verbatim rather than adding scope.

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?

'Use after dogpolicies_search_places or dogpolicies_find_hotels, which return ids' gives a clear precondition and names the producing tools. It stops short of exclusions — nothing says when to prefer dogpolicies_get_rule, dogpolicies_compare_places, or a search snippet instead of pulling the full record.

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