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

Annotations already declare readOnlyHint/idempotentHint/non-destructive, so safety is covered; the description adds genuine behavioral context by disclosing sort order ('newest first') and the return payload ('with links and ids'). It stops short of describing truncation or pagination behavior despite a default of 10 and a max of 25.

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 front-loaded sentence with zero filler; the ordering and return shape are packed into one clause without 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?

For a simple 2-param read tool with no output schema, the description covers what is returned (links and ids) and in what order, plus annotations cover the safety profile. Only pagination/limit behavior is unaddressed.

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 params (type enum, limit) are documented in the schema, so the baseline of 3 applies. The description adds nothing about filtering by type or limit semantics beyond 'newest first', which is ordering rather than parameter meaning.

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 the resource (what the user has already made) and its ordering/shape, matching the tool name list_creations. It is clear what comes back, but it never differentiates itself from the other list_* siblings (list_characters, list_music, list_presenters) or states the verb explicitly, so an agent must infer the scope from the name.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives. The agent is left to infer that this is the tool for enumerating user output, with no exclusion criteria or routing advice.

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