Get photos

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

Annotations already declare readOnlyHint, idempotentHint, and openWorldHint, so the description does not need to restate safety. It adds value by explaining special parameter values but does not disclose behaviors like pagination or authentication requirements beyond what annotations cover.

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?

Two concise sentences, front-loaded with the main action. Every sentence adds essential information without 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?

Given the presence of output schema and full parameter documentation, the description provides enough context to use the tool. Minor gaps: no mention of default behavior when count is omitted, or pagination hints. Still, it is nearly complete for a simple list tool.

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 has 100% documentation for all 3 parameters, so the description adds minimal new meaning beyond what the schema already provides (e.g., repeating album_id options and owner_id sign). Baseline 3 applies.

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?

Description uses specific verb 'List' and resource 'photos from an album', clearly distinguishing from sibling tools like vk_wall_get (wall posts) or vk_photos_upload_wall (upload). It also specifies special album_id values.

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?

Provides context on album_id and owner_id formats, clarifying common usage scenarios. However, it does not explicitly compare with alternatives or state when not to use this tool, lacking exclusions.

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