aaddyy_watermark_remover

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

With no annotations, the description carries the full burden. It usefully discloses the ~20 credit cost, the underlying model, and the input/output shape, but omits operational traits such as supported formats, size limits, and whether the result is returned as a URL or binary.

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?

Three short sentences, action and resource front-loaded, with the input/output loop and cost each stated once and no filler.

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 one-parameter tool with no output schema or annotations, the description covers the core request/response cycle, model, and cost, but leaves the return format and any input constraints unspecified.

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?

The single parameter has 0% schema description coverage and an empty description, so the description must compensate. 'Provide an image URL' effectively identifies the input as the source image to be cleaned, but adds no format, dimension, or hosting constraints beyond that.

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?

States a specific verb and resource ('Remove watermarks from images') plus the model used, which clearly separates it from image siblings like background_remover. It stops short of explicitly differentiating itself from those adjacent tools, so it is clear but not maximally sibling-aware.

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 only says to supply an image URL. It gives no when-to-use framing, no conditions or exclusions, and never points to or away from alternatives such as background_remover or upscale_image.

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