List popular meme templates

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

The annotations already declare readOnlyHint and openWorldHint, but the description adds valuable context: the approximate count (~100), ordering by recent captioning frequency, the exact fields returned (id, name, URL, dimensions, box_count), and free/no-credentials requirement. This enriches the behavioral understanding beyond the structured 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 core purpose, and then provides concise details about the output and auth. Every sentence earns its place with no redundancy or fluff.

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 list tool with no output schema, the description fully explains what is returned, how it is ordered, and that it requires no credentials. It also connects to the sibling tool by highlighting the id's role, making it contextually complete.

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?

Both parameters (limit and name_filter) are fully described in the schema with descriptions and constraints. The tool description does not add extra parameter-specific semantics, but it does mention the default ordering and that the id is needed for captioning, which indirectly relates to usage. Given 100% schema coverage, a baseline 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 verb 'Get' and the resource 'popular Imgflip meme templates', with specific details about ordering and data fields. It distinguishes itself from the sibling tool 'caption_image' by explicitly noting the id is needed for captioning.

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 clear context: it lists popular meme templates and notes they are needed for caption_image, implying a typical usage flow. However, it does not explicitly state when to use this tool over alternatives or mention any exclusions.

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