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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so safety is covered by structured data. The description adds meaningful context beyond that: the OAuth requirement, which is an auth prerequisite not visible in the annotations. It says nothing about failure modes for an invalid id, which keeps it off a 5.

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, front-loaded sentences: purpose first, sibling routing second, prerequisite last. No redundant restatement of the tool name or filler.

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?

A one-parameter read tool with an output schema, read-only annotations, and an explicit auth note is nearly fully specified. The only remaining gap is guidance on where the id comes from or what happens when it is invalid, which is a minor omission for a tool this simple.

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 0% for the single `id` parameter, so the description carries some burden and does indicate the value identifies one list. However, it adds no format, source, or example for the id (and the sibling reference uses the name "listId" while this tool's parameter is `id`), so it only marginally compensates for the undocumented 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?

States a specific verb and resource ("inspect one list by id") and enumerates what is returned (description, status, dashboard link). The singular scope plus the pointer to list_listings for members clearly separates it from sibling list/listing tools.

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?

Gives an explicit trigger ("when the signed-in user asks to inspect one list by id") and names the alternative tool with the argument to use for the adjacent operation (paged members via daylily.list_listings with listId). This is exactly the routing an agent needs.

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