pexels_popular_videos

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

With no annotations provided, the description carries the full burden. The term 'Fetch' implies a read-only operation, but no other behavioral context is given—such as pagination defaults, rate limits, or whether the result is a list or single item. For a read operation, this is minimal but not enough.

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 a single, front-loaded sentence that is concise and grammatically clear. However, its brevity borders on under-specification—every word earns its place, but the tool clearly needs more content.

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 tool with 6 optional parameters, no output schema, and no annotations, a one-line description is wholly inadequate. The agent cannot infer the return structure, default values, or filtering behavior, making effective invocation nearly impossible.

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 0% (none of the 6 parameters are described in the schema) and the description adds no parameter information whatsoever. The agent has no idea what 'page', 'per_page', 'min_width', etc., do or how they relate to 'popular' videos.

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 'Fetch' and the resource 'current popular Pexels videos', which is specific enough to understand the tool's core function. However, it does not differentiate itself from siblings like pexels_search_videos or pexels_get_video, leaving room for ambiguity.

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?

There is zero guidance on when to use this tool versus the sibling search/get tools. No mention of ideal use cases, alternatives, or exclusions, so the agent is left uninformed about selection.

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