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

With no annotations, the description carries the full burden and does disclose meaningful traits: no API key required, results cached 10 minutes, free, public-only content, and a hard one-per-creator + view-sorted ordering. It omits any rate-limit or freshness/refresh behavior beyond the cache window, and does not explicitly label the operation read-only, keeping it below 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?

The content is dense and mostly front-loaded, but the telegraphic fragment style with multiple parentheticals is harder to parse than it needs to be, and 'No key needed' is stated twice while 'Free.' is redundant filler. It is not bloated, but it could be tightened into cleaner sentences.

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, zero-required-parameter tool with an output schema, the description covers the essential behavioral facts an agent needs (no auth, public-only, caching, ordering, cardinality). Return-field detail is covered by the output schema, so nothing critical is missing.

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 coverage is 100% and the single 'n' parameter is already documented as clamped to 1-24 with default 12. The description only restates n via the REST example ('?n=12'), adding no new meaning over the schema, so the 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 states the resource precisely: real delivered hooks for a wait screen, restricted to talking heads, sorted by most-viewed, one per creator. It implicitly distinguishes itself from filter-style siblings like find_hooks by saying it never takes a topic, account or run. A clearer leading verb (e.g. 'Lists') would make the purpose unmistakable, but the scope is unambiguous.

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?

'For a wait screen' gives a concrete use context, and 'only what is already public' implies the tool is for display of public content rather than searching. However, no sibling is named as an alternative and no explicit when-not guidance is given; the agent must infer that find_hooks/get_hook are the search counterparts.

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