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

With no annotations, the description carries the full behavioral burden. It does disclose meaningful behavior — results are ranked by community vote score and sourced from 3ammiya — but says nothing about read-only nature, result shape, or how the period interacts with ranking. It adds some value but leaves notable gaps for a zero-annotation tool.

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 short sentences, front-loaded with the resource and ranking rule, followed by the use case. No wasted words and nothing buried.

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 list tool with full schema coverage and no output schema, the description covers what is returned, how it is ordered, where it comes from, and why to use it. Only minor gaps remain (no sibling routing), so it is nearly complete.

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 limit, locale, and period are already fully documented in the schema. The description adds no parameter-level detail beyond the implicit notion of a trend window; 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?

States a specific verb and resource — popular/trending Egyptian Arabic slang words from 3ammiya — plus the ranking criterion (community vote score). It is distinguishable from siblings like get_latest_words (recency) or lookup_word (single lookup), but it never names a sibling explicitly, so it stops short of a 5.

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?

"Useful for discovering widely-used slang" implies the use case but gives no explicit when-to-use vs alternatives (e.g. get_latest_words for newest entries, search_words for targeted queries) and no exclusions. Usage is inferable but left to the agent.

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