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

Annotations only declare readOnlyHint and openWorldHint, so the description carries the real burden and delivers: it discloses that freshness is per-row rather than daily, that rows may be weeks old, and precisely what live_verified does and does not prove. This is exactly the non-obvious staleness semantics an agent needs before trusting results.

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?

Purpose is front-loaded in the first sentence, which is efficient. The freshness paragraph is dense and slightly convoluted ('it is not proof every listing was checked today'), but every clause adds real meaning rather than filler.

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 9-parameter, all-optional search with no output schema, the description covers the crucial gap: what result freshness means. It stops short of describing result shape or pagination beyond the limit default the schema already covers, leaving a small gap.

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 the schema already documents all nine parameters with examples. The description restates the filter dimensions but adds no syntax or format detail beyond what the schema provides, 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?

States a specific verb (Search) plus a precise resource (Junely's catalog of Colorado summer camps and after-school programs) and even names the verification source (each provider's own page). An agent can distinguish this from get_program_details, whats_open, and watch_program without opening any schema.

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 filter list ('Filter by child age, month, region, category, price, and open availability') implies this is the broad discovery tool, but there is no explicit when-to-use-vs-alternatives guidance. Nothing tells the agent when to prefer whats_open or get_program_details over this search.

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