Unsplash Total Stats

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

Annotations already declare readOnlyHint=true and openWorldHint=true. Description adds 'Read-only' which is redundant but not contradictory. No further behavioral details (e.g., rate limiting, caching). Description carries minimal extra value beyond 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?

Extremely concise (two sentences), front-loaded with primary action, no filler. Every word adds value.

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 zero-parameter tool, description lists main returned items but omits return format (JSON object with specific fields). With no output schema, description could be more explicit about what 'and more' includes. Adequate for simple stat but could be slightly improved.

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?

No parameters (empty schema, 100% coverage). Description adds no parameter info, but none needed. Baseline 4 applies as schema covers all.

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 retrieves Unsplash-wide totals (photos, downloads, views, photographers), with a specific verb 'Get' and resource 'Unsplash-wide totals'. Description distinguishes tool from sibling tools that focus on specific users, topics, or photos.

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?

Implies usage for aggregate statistics, but does not explicitly state when to use versus alternatives. However, the sibling tools are clearly different (user-specific, topic-specific), so context is sufficient.

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