images

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

No annotations are provided, so the description carries the full behavioral burden. It discloses return artifacts such as INDEX.md and a contact sheet, but omits important mutation details like whether an album is created or overwritten, permission requirements, reversibility, or rate limits.

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 two dense sentences and front-loads the indexing action and outputs. The second sentence shifts into sibling tool calls, which is useful context but slightly beyond what is needed to invoke this tool.

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?

The description covers purpose, extracted metadata, and return values, which is helpful given there is no output schema. But with no annotations, no output schema, and an undocumented recursive parameter, album lifecycle and side effects remain incomplete for a tool that indexes images into an album.

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 description coverage is 0%, so the description must compensate. It usefully explains that sources can be folders, files, globs, or URLs, but it never mentions the recursive boolean, leaving one of two parameters without any semantic guidance.

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 states a specific action, 'Index images ... into an album,' and enumerates what is generated and returned. It also names follow-on sibling tools search, look, and image, making its role fairly clear, though it stops short of explicitly differentiating when this tool is preferred over those siblings.

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 implies a workflow: index sources into an album, then use search, look, or image for retrieval and detail. However, it does not explicitly state when to use this tool versus alternatives, nor does it list prerequisites or exclusions.

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