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

Annotations already declare readOnlyHint=true, so the tool is clearly non-destructive. The description adds value by stating the catalog is 'daily-verified' and returns 'honest, recently-verified enrollment status,' providing context about data freshness and reliability beyond the annotations.

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 description is two sentences, front-loaded with the tool's core purpose. It is concise with no unnecessary words, though it could be slightly more streamlined. Every sentence adds value, earning a 4.

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?

The tool has 9 parameters and no output schema. The description mentions it returns matches with enrollment status, but lacks details on response structure, pagination, or default sorting. For a search tool with many filters, this creates potential ambiguity, though the schema’s limit parameter partially addresses pagination. Completeness is adequate but not fully comprehensive.

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 100%, so the schema descriptions already define each parameter. The tool description does not add any additional meaning or clarification beyond what the schema provides, such as format constraints or dependencies. Thus, baseline score of 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 states the tool searches a catalog of Colorado camps and after-school programs, specifying the data source (Junely’s daily-verified catalog) and filters (age, month, region, category, price, open availability). It distinguishes itself from siblings like get_program_details (which is for specific program details) and whats_open (likely a simpler view), though this is implicit.

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 implies usage for general searching with filters, but does not explicitly state when to use this versus alternatives like whats_open (which might be for unfiltered open programs) or get_program_details (for specifics on one program). No when-not or exclusion criteria are provided, placing it at a baseline needed level.

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