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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds real behavioral value by disclosing the result-set rule: entries without a listed monthly price are excluded, so the agent knows results are a filtered subset. It does not mention pagination, the default for limit, or how ties are ordered.

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 ordering, and the exclusion rule follows as a clean caveat. Minor redundancy between 'sorted by lowest listed monthly price' and 'cheapest first', but nothing is padded.

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 2-parameter read tool with no output schema, the description covers the filtering and sort semantics adequately. It is still incomplete on the limit parameter and its default, which an agent needs to know to control result size or understand truncation.

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 only 50%: category is documented ('Category slug from list_categories') but limit has no description anywhere. The description does not mention limit, its default, or its maximum of 25, so it fails to compensate for the coverage gap on a parameter that directly shapes the result size.

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 the specific resource (AI agents), the scope (one category), and the ordering (monthly price ascending in USD), which lets an agent tell it apart from a generic search. It does not name or contrast with the siblings get_agent_pricing and search_ai_agents, which likely overlap in purpose.

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 says what the tool returns but never states when to choose it over get_agent_pricing or search_ai_agents. The only hint at alternatives is the schema note pointing to list_categories for slugs, which covers input discovery, not tool selection.

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