vk_get_backgrou_9a4b6fd79afd

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

With no annotations provided, the description carries the full transparency burden. It discloses error format ('Returns json on error'), authentication requirements, and parameter naming aliases. It stops short of describing the successful response format, but it is transparent for a simple GET endpoint.

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 not excessively long but repeats 'Get an unsplash image.' verbatim, which wastes a sentence. The remaining content is structured and informative, but the redundancy should be removed.

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 single-parameter GET tool with no output schema, the description covers authentication, error behavior, and parameter usage. It does not mention what a successful response returns (e.g., image binary vs. JSON), which would be useful since no output schema is present.

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 coverage is 100% and the image parameter already has a description in the schema. The description adds meaningful extra guidance by explaining that path/query parameters are top-level fields and that camelCase and snake_case aliases are accepted.

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 gets an unsplash image and identifies the exact REST endpoint (GET /backgrounds/unsplash/image/{image}). However, it does not distinguish itself from sibling tools with nearly identical names like vk_get_backgrou_a6990b2bc73a.

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 useful usage context such as authentication being required, no request body usually needed, and parameter alias handling. However, it does not explicitly explain when to use this tool versus the many sibling background tools or offer any exclusion criteria.

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