add_to_album

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

Annotations include idempotentHint: true and destructiveHint: false, but the description adds the behavior of creating the album if it does not exist, which is useful. Beyond that, no behavioral traits like ownership or permissions are disclosed, but given the annotations, the description contributes some context.

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 very concise and front-loaded with the main purpose, followed by parameter explanations. The 'Args' section is clear and easy to scan, though it's slightly generated but lacks additional context that might be missing but not overly lengthy.

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 tool's simplicity (2 parameters, idempotent and not destructive) an output schema exists, the description is adequate. However, it does not mention any side effects like album creation might fail if album name is invalid, nor how the output schema or return value is used. Still, it's acceptable for a basic operation.

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 schema description coverage at 0%, the description's brief 'album: Album name' and 'refs: Photo uuids or exact filenames' adds meaning. However, it is minimal and doesn't detail expected format for album names or nuances like whether refs must be list of exact matches. It partially compensates for the schema gap.

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 ('Add photos') and resource ('to an album'), and mentions creating the album if needed. It distinguishes the tool's purpose from siblings like search_photos or photo_info, though it doesn't explicitly contrast with them.

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 no guidance on when to use this tool versus alternatives, such as add_keywords or set_photo_title. It lacks context about typical workflows or conditions under which adding to an album is appropriate versus not.

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