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

Annotations already declare read-only, non-destructive, closed-world behavior. The description adds useful behavioral context: the library size, that templates are free, and what is returned (slug, category, preview link). It does not disclose result limits, ranking, or pagination behavior, which keeps it from a 5.

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 front-loaded with the verb and resource, followed by a clear usage sentence and return-value sentence. The long category parenthetical is informative and earns its place, though it is slightly verbose.

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 two-parameter search tool with rich schema coverage and annotations, the description covers purpose, usage, scope, and return fields. The main missing context is pagination or result-limit behavior, which matters somewhat for a 1000+ template search.

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 both the required query parameter and optional category parameter are already fully documented. The description's parenthetical category examples add some useful context but do not meaningfully extend parameter semantics beyond the schema.

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 gives a specific verb ('Search') and resource ('LaTeX templates') plus scope details such as the 1000+ free template library and template categories. It clearly identifies this as a discovery/search tool, but it does not explicitly distinguish it from the close sibling get_template for retrieving a known template by slug.

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 explicitly states when to use the tool: when the user wants a LaTeX template or a starting point for a document. It does not state when not to use it or name alternatives like get_template, so the guidance is clear but not complete.

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