apply_picture_effects

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

There are no meaningful annotations (only a title), so the description carries the full burden of behavioral disclosure. It does not state whether the operation mutates the existing picture, whether effects replace or layer onto existing formatting, what the output contains, or any side effects on the shape.

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 a single, front-loaded sentence with no wasted words. It is concise, though arguably too thin for the complexity of the tool; still, as a standalone phrasing it is efficient.

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 tool has a complex nested effects parameter and no schema-level documentation, so an agent would need much more detail to call it correctly. Missing context includes the picture-shape prerequisite, the catalog of valid effects, how effects combine, and whether presentation_id is needed for existing files.

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%, and the description barely compensates. 'Multiple picture effects in combination' adds only minimal context for the effects parameter; it does not explain the structure of the effects object, allowed effect names/value types, or the roles of slide_index, shape_index, and presentation_id.

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 clear verb ('apply') and resource ('picture effects'), and the phrase 'in combination' distinguishes this from simply applying one effect. However, it does not specify the target shape type or the possible effects, leaving some ambiguity about what exactly is being applied.

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?

No guidance is given on when to use this tool versus alternatives such as manage_image or add_image_from_dial_url. The description offers no context about prerequisites, target shape requirements, or situations where this tool is preferred.

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