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

With no annotations, the description carries the full burden and it does add real value: it names the data source (filtered official Apify Store export), exposes freshness metadata fields (data_updated, evidence), and candidly states the limitation 'No live tests or output-quality measure.' It still omits return format, ordering, and any pagination or caching 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?

The text is information-dense and most sentences earn their place (source, thresholds, limitations). However, leading with a rhetorical question is a stylistic choice that delays comprehension and weakens front-loading for a tool that must be scanned quickly.

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 one-parameter ranking tool with no output schema and no annotations, the description covers the data source, candidate thresholds, and known limitations, which is a reasonable amount. It is still missing the shape and units of the result set, which an agent would need to use the output correctly.

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?

There is one parameter (site) with 0% schema description coverage, so the description must compensate. It only alludes to 'for a website' without giving format, accepted values, or matching rules, leaving the sole required input effectively undocumented.

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 conveys the resource (tracked actors for a website) and the criteria (run completion, usage, qualifying price), so an agent can infer this ranks actors. However, it is phrased as a rhetorical question rather than a direct verb+resource statement, and it never distinguishes itself from siblings like compare_scrapers or find_scrapers.

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?

It lists qualifying thresholds (300+ runs, 20+ users, 95% completion), which describes the data selection, but gives no guidance on when to call this tool versus compare_scrapers, find_scrapers, or list_websites. No when-to-use, when-not-to-use, or alternative routing is provided.

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