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

The annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered. The description adds a genuine behavioral fact the annotations do not: that searches and favourites reach into the shared starter library. It does not disclose pagination mechanics or result shape beyond 'paged', leaving modest gaps.

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 sentence, front-loaded with verb and resource, with the library-scope caveat trailing correctly. The compressed phrasing 'a search and the favourites also cover' is slightly awkward to parse but every clause carries 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 read-only list tool with zero required parameters, full schema coverage and rich annotations, this is close to sufficient: scope, paging and library coverage are all signalled. No output schema exists, yet return structure and the meaning of nextCursor are left to the parameter descriptions, which is acceptable.

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 every parameter (limit, query, cursor, category, favourites) is already documented, including the 1-100 range, the default of 40 and the base-recipe behaviour of query. The description's mention of the starter library slightly overlaps the schema rather than extending it, so baseline 3 applies.

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 uses a specific verb pair ('Search or list') with a concrete resource ('the household's recipes') and adds scope cues ('paged', 'shared starter library'). It implicitly separates itself from the singular get_recipe/edit_recipe/delete_recipe siblings, but never names them, so the differentiation is inferential rather than stated.

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 conveys the two modes of use (list vs. search) and hints that search widens scope, which is enough to pick this over a single-recipe fetch. However, there is no explicit when-to-use/when-not guidance and no named alternative such as get_recipe for one dish or search_tips for help.

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