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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, so the description carries less burden. It adds the context that the library is public and implies a non-mutating exploratory role, but does not explain default behavior (e.g., mediaType defaults to image) or result pagination. This is adequate but not deeply transparent.

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 sentences, front-loaded purpose, and zero wasted words. The first sentence states what the tool does; the second gives actionable usage guidance. This is a model of concise, structured description.

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?

Although there is no output schema and the description does not mention return format, the tool's purpose is self-evident from its name and description. Annotations cover safety and idempotency, and the workflow guidance with generate_gif provides sufficient context for a search tool. Minor omissions exist, but overall it is complete enough.

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 covers all 7 parameters with descriptions, so baseline is 3. The description adds strategic value by recommending specific mediaType values (gif or all) in the context of generate_gif, which guides parameter selection beyond the schema's static descriptions.

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 the public meme template library and positions it as a preparatory step before committing to a format. The verb 'search' with resource 'meme template library' is specific and distinguishes it from sibling tools like generate_gif, which is referenced as the next step.

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 provides explicit context: use this tool before committing to a format, and directly instructs setting mediaType=gif or mediaType=all before calling generate_gif. It references the sibling tool generate_gif but does not discuss exclusions or other alternatives, so it falls short of a 5.

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