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

No annotations are provided, so the description must convey that this is a read-only query. The phrasing 'Top Polymarket markets by 24h volume' implies a read operation but does not explicitly state safety characteristics, nor does it describe output format or data freshness. It adds the news-catalyst context, but that's more about usage than behavior.

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, front-loaded with the core function, followed by a brief utility. No redundant wording or unnecessary detail.

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 listing tool with one optional parameter and no output schema, the description covers the essential function and value. It lacks explicit details about the returned fields or market status, but that information is not critical for selection and invocation at this level.

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 only parameter 'limit' is fully described in the schema (default 10, max 25), and schema coverage is 100%, so the description does not need to elaborate. The description adds no additional parameter semantics; baseline 3 is appropriate.

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 clearly identifies the tool's function: returning top Polymarket markets ranked by 24-hour trading volume. This distinguishes it from the Kalshi trending sibling (pg_kalshi_trending) by explicitly naming Polymarket.

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?

The description provides a concrete use case ('daily compliance triage, catching news catalysts') and implies it is for trending markets on Polymarket. It does not explicitly list alternatives or exclusions, but the sibling naming convention makes the alternative clear.

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