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

Annotations already cover readOnly, idempotent, and non-destructive behaviorcars. The description adds useful behavioral details beyond this: the result order (newest first) and the inclusion of the creator for each recipe, which helps the agent set expectations about the response.

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?

Two sentences with no filler. The first sentence immediately states what the tool returns and key ordering, and the second provides invocation context. Every clause earns its place.

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 parameterless read-only listing tool with strong annotations-checked safety hints and a sibling set for scope context, the description is complete. It covers what is returned, ordering, source attribution, and when to use it. No output schema exists, but the return shape is sufficiently described.

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?

The tool has zero parameters, so the baseline is 4 per the rubric. The description adds return-value semantics about ordering and creator attribution but does not need to document parameters, since none exist.

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: listing saved recipes, sorted newest first, and including the creator. It clearly differentiates from siblings like add_pantry_items, save_recipe, and list_pantry by focusing on saved recipes rather than pantry items or actions.

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 explicitly says 'Use this when they ask what they have saved or want to find a recipe by name,' giving clear context for when to invoke the tool. It does not name alternative tools or exclusion criteria, but the guidance is unambiguous and sufficient for this simple read-only tool.

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