Get Pexels Curated Photos

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

Adds useful context beyond annotations: post-hoc filter behavior (oversample, cap 80), CDN link property, no-download instruction, and licensing credit requirement. No contradiction with 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?

Very concise: 5 sentences covering purpose, usage, filter behavior, link handling, and attribution. Front-loaded with main action.

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?

Given sibling set and output schema (implied), the description covers all essential aspects: when to use, filter details, output link handling, and legal note. No gaps.

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?

With 0% schema description coverage, the description compensates by explaining the filter parameters (aspect_ratio, min_width, min_height) include behavioral details (post-hoc, oversample, cap 80). Missing page/per_page, but these are standard pagination fields with defaults.

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?

Clearly states it fetches editor-curated daily photo feed (specific verb+resource+scope). Distinguishes from sibling pexels_search_photos for targeted search.

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?

Explicit 'USE WHEN' for feed-style discovery and 'DO NOT USE' for targeted topic search with direct sibling reference.

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